Mini Analyzer Manual

8/6/2019 Mini Analyzer Manual

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Mini AnalyserEdition 1.0

User

Manual


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+61 7 4660 1888

Greenspan Customer Service

Technical Support When You Need It

The correct choice of sensor should be supported by professional advice to ensure long term success

in the field. Greenspan Technical Services is dedicated to customer support and provides

assistance in the selection, installation, deployment and commissioning of sensors with a full range

of consulting services.

A full technical support and field advice service can be accessed by ringing Customer Service on

+61 7 4660 1888 between 8am - 6pm, 5 days a week.

All requests for information will be serviced within 24 hours.

All Greenspan products are designed, developed and manufactured in Australia and can be

supplied at short notice.

Warranty Details

Greenspan warrants all new Greenspan products against defects in materials and workmanship for12 months from the date of invoice. During the warranty period, we will repair or, at our option,

replace at no charge a product that proves to be defective provided that it is returned, shipping

prepaid, to Greenspan Technology Pty Ltd.

Greenspans liability and obligations in connection with any defects in materials and workmanship

are expressly limited to repair or replacement, and the sole and exclusive remedy in the event of

such defects shall be repair or replacement. Greenspans obligations under this warranty are

conditional upon it receiving prompt written notice of claimed defects within the warranty period

and its obligations are expressly limited to repair or replacement.

This warranty does not apply to products or parts thereof which have been altered or repaired

outside of the Greenspan factory or other authorised service centre, or products damaged by

improper installation or application, or subjected to misuse, abuse neglect or accident. This

warranty also excludes items such as reference electrodes and Dissolved Oxygen membranes thatmay degrade during normal use.

Greenspan Technology Pty Ltd will not be liable for any incidental or consequential damage or

expense incurred by the user due to partial or complete inoperability of its products for any reason

whatsoever or due to inaccurate information generated by its products.

All Warranty service will be completed as soon possible. If delays are unavoidable customers will

be contacted immediately.

The sensors should not be dismantled unless under instruction from Greenspan. Incorrect

handling will void the warranty.


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TABLE OF CONTENTS

TABLE OF CONTENTS I

1 INTRODUCTION 1

1.1 Applications 2

2 SAFETY 3

2.1 Guidelines For Working With Chemicals 3

2.2 Other Safety Guidelines 3

3 OVERVIEW OF MINI-ANALYSER 4

3.1 The Greenspan Mini-Analyser 4

3.2 Communications Interface 5

3.3 Serial Communication Port 5

3.4 Battery Back-Up 6

3.5 Configuration File 6

3.6 Sample Delivery 7

3.7 Optional 4-20mA Output 7

4 WATER QUALITY PARAMETERS 8

4.1 Dissolved Oxygen 8

4.2 Electrical Conductivity 8

4.3 ORP 8

4.4 pH 9

4.5 Turbidity 9

4.6 Ammonia and Ammonium 94.6.1 Ammonia 9

4.6.2 Ammonium 10

4.7 Nitrate 10

4.8 Phosphate 10

5 GETTING STARTED CHECKLIST 11

6 INSTALLATION 12


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6.1 Choosing the site 126.1.1 Positioning the Analyser 126.1.2 Positioning the pump 12

6.2 Setting up the Mini-Analyser 136.2.1 Mounting the cabinets 13

6.2.2 Unpacking the battery and sensors 13

6.3 Configuring the communications 146.3.1 Connecting the modem 14

6.4 Installing the sample delivery module 146.4.1 Selecting a position for the module 146.4.2 Mounting the sample delivery module 15

6.4.3 Connecting The sample delivery and Analyser 156.4.4 Connecting the pump to the sample delivery 16

6.5 Installing the sample delivery pump control module 166.5.1 Checking the operation of the sample delivery 17

6.6 Connecting or adding external devices 17

6.7 Getting the Analyser commissioned 176.7.1 Running some test schedules 176.7.2 Testing a known sample 18

7 COMMUNICATIONS 19

7.1 Getting Started with the User Interface 19

7.2 Installing a Modem 19

7.2.1 Setting the modem initialisation string 20

8 SCHEDULES 21

8.1 Working With Schedules Using Analyser32 218.1.1 Setting up a schedule 218.1.2 Creating or editing schedules 22

8.1.3 Entering a name 228.1.4 Viewing and editing tests in the schedule 228.1.5 The schedule duration 228.1.6 Timing a schedule 228.1.7 Enabling the schedule 22

8.1.8 The scheduler priority 228.1.9 Using periodic triggering 238.1.10 Using timetable triggering 248.1.11 Using event triggering 248.1.12 Using the external trigger 258.1.13 Using initial triggering 258.1.14 Editing the tests for a schedule 26

8.1.15 Adding fill and clean operations 26

8.2 Starting a Schedule Using Analyser32 278.2.1 The current date/time display 278.2.2 Inserting comments 278.2.3 Operator identification 27

8.2.4 Clear memory 28


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8.3 Stopping a Schedule 288.3.1 The last started display 288.3.2 Current date/time 28

8.3.3 Inserting a comment 288.3.4 Operator identification 29

8.3.5 Confirming the end of scheduling 29

9 ALARMS 30

9.1 Setting Alarms With Analyser32 309.1.1 Setting the sample alarms 319.1.2 Memory alarm 319.1.3 The battery alarm 329.1.4 The solutions alarms 32

9.1.5 Water or liquid ingress 339.1.6 Enabling an external output 339.1.7 Alarms and the data log 339.1.8 Enabling the alarm system 33

9.1.9 Dialout on alarm 349.1.10 Receiving dialout alarms 35

9.2 Clearing Alarms With Analyser32 359.2.1 Clearing the alarm 369.2.2 Cancelling a dialout 36

10 DOWNLOADING DATA 36

10.1 Downloading Data using Analyser32 3610.1.1 Downloading the entire data log 3710.1.2 Downloading new data 37

10.1.3 Downloading data between dates 37

11 CHEMICAL STORE 38

11.1 Changing Solution Bottles 38

11.2 Updating Reagents Using Analyser32 40

11.3 Waste Disposal 4111.3.1 Unmodified waste 4111.3.2 Modified waste 41

12 CHECKING MEASUREMENTS AND SENSORS 42

12.1 Dissolved Oxygen 4212.1.1 Analysing the DO data 42

12.2 Electrical Conductivity 4412.2.1 Analysing the EC data 44

12.3 Oxidation-Reduction Potential 46

12.4 pH 4612.4.1 Analysing the pH data 46

12.5 Turbidity 4812.5.1 Analysing the turbidity data 48


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12.6 Ammonia 5012.6.1 Analysing the ammonia data 50

12.7 Ammonium 5212.7.1 Analysing the ammonium data 52

12.8 Nitrate 5412.8.1 Analysing the nitrate data 54

12.9 Phosphate 5612.9.1 Analysing the phosphate data 56

13 MAINTENANCE 58

13.1 General Mini-Analyser Maintenance 5813.1.1 Stopping or aborting the schedule 5813.1.2 Cabinet 58

13.1.3 Pump tubing 59

13.1.4 Setting the pump pressure 5913.1.5 Sample/chemical tubing 6013.1.6 Valve tubing 6113.1.7 Sample delivery pot 6113.1.8 The water ingress detector 62

13.1.9 Running diagnostics 6213.1.10 The clean regime 64

13.2 Sensor Maintenance 6513.2.1 Replacing sensor bodies and electrodes 6513.2.2 DO 6613.2.3 EC 67

13.2.4 ORP 69

13.2.5 pH 7013.2.6 Turbidity 7113.2.7 Ammonia 7213.2.8 Ammonium 7413.2.9 Nitrate 7513.2.10 Reference electrodes. 76

13.2.11 Phosphate 77

13.3 Sensor Calibration 7813.3.1 Dissolved oxygen 8013.3.2 Electrical conductivity 8213.3.3 Oxidation-reduction potential 8413.3.4 pH 86

13.3.5 Turbidity 87

13.4 Maintenance Schedule 90

14 UPGRADING FIRMWARE 91

14.1 Direct connection 91

14.2 Modem connection. 92

14.3 Uploading the firmware 93

15 TROUBLESHOOTING 97


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15.1 Common Mini-Analyser problems. 97

15.2 Analyser Problems within the Mini-Analyser 98

15.3 Communications Problems 99

16 SPECIFICATIONS 101

16.1 Mechanical 101

16.2 Power Supply 101

16.3 Communications 101

16.4 Telephone Modem 101

16.5 GSM Modem 101

16.6 Operating Environment 102

16.7 Housing Requirements 102

16.8 Measurement Range 102

16.9 Measurement Accuracy 102

16.10 Measurement Times 103

16.11 Sensor Life 103

16.12 External inputs 103

16.13 External Outputs 103

16.14 Storage Conditions 103

17 SPARE PARTS LIST. 104

17.1 Sensors 104

17.2 Electronics 105

17.3 Cables 106

17.4 Plastic parts 107

17.5 Miscellaneous 108


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1 INTRODUCTION

This manual covers all sensor configurations available for the Mini-Analyser. The analyser

you have purchased may not contain all these sensors depending on the configuration that you

have purchased. Please refer to the sections that are relevant to your analyser.

The setting of new environmental standards worldwide has created a demand for instruments

that can provide water quality data for the monitoring of natural water systems. The

Greenspan Mini-Analyser offers the maximum features and flexibility of this range of

instruments.

Aimed at the task of environmental and industrial monitoring the Mini-Analyser is capable of

remote communications access and on-line measurement. The most important advantages of

on-line measurement are speed and the integrity of results. Many properties can change if the

sampled water is exposed to air or sunlight or is stored for a period of time before testing. The

Mini-Analyser allows measurements to be taken quickly without the need to add preservativesor to freeze the sample.

Between measurements the sensors are automatically cleaned and are either immersed in a

suitable storage solution or stored under conditions designed to prolong sensor life.

Permanently submerged sensors will generally have shorter lives and therefore need to be

replaced more often.

The Mini-Analyser is available in several configurations covering most of the important water

quality parameters.

PHYSICAL MEASUREMENTS

Dissolved Oxygen

Electrical Conductivity

Oxidation-Reduction Potential

pH

Temperature

Turbidity

ION SPECIFIC MEASUREMENTS

Ammonia or Ammonium

Nitrate

PHOTO-COLORIMETRICMEASUREMENTS

Phosphate

OTHER FEATURES

8 external sensor inputs plus rain gauge

input

can be configured for multiple sample

inlets

external alarm output

remote access, using telephone, mobile

network or satellite phone

direct access using serial

communications port

large data log capacity

automatic calibration of

ammonia/ammonium, nitrate and

phosphate sensors

temperature compensation for

dissolved oxygen, electrical

conductivity and pH


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The Mini-Analyser can be thought of as an automated chemical laboratory. It consists of

pumps, valves, tubing, chemical storage and sensors interconnected so that a wide range of

tasks can be performed. Controlled by a microprocessor it provides for excellent accuracy,

precision and flexibility. Figure 1 shows a simplified block diagram.

1.1 Applications

The Mini-Analyser has been designed as a stand-alone analyser for installation in a diverse

range of applications, some of these include:

River Monitoring: Greenspan Analysers are used extensively to monitor river water

quality prior to extraction for treatment and distribution by the water supply network

Wastewater: The on-line monitoring of nutrient levels in wastewater treatment plants

Wetlands: Unattended operation in remote areas monitoring the impact of human and

agricultural nutrient levels on wetlands

Harbour Monitoring: Used in conjunction with external sensors linked to the system, to

monitor physical and nutrient levels and alert to the possible pollution of the waters

Aquaculture: The Mini-Analyser can assist farm operators to maintain the best possible

levels of nutrients to maximise returns on their investments

Figure 1: Mini-Analyser block diagram


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2 SAFETY

2.1 Guidelines For Working With Chemicals

1. Always follow approved procedures when handling, storing, packaging or using chemicals

and chemical waste.

2. Personnel who handle chemicals and waste must be trained in these procedures and

informed of the potential hazards associated with them.

3. Always read the material safety data sheets before using a chemical. In particular read the

first aid information. The material safety data sheet should also provide information on

the correct storage and transport of that material.

4.

Wear protective clothing when handling chemicals. This includes eye protection, rubbergloves and protective coat or apron.

5. Do not consolidate untreated Mini-Analyser waste with any other waste.

6. Keep a record of chemical inventory. This does not apply to chemicals installed in the

Mini-Analyser cabinet. Approximately every six months check that all chemicals are

stored correctly, in particular check for damaged labels, outdated chemicals and damaged

containers.

7. Chemicals when stored should be segregated according to hazard class and compatibility.

The ammonia ionic strength adjuster (ISA) reagent is classed as corrosive.

8. The waste container should not be allowed to fill more than 90% full. The headspace is

needed for ease of dispensing.

2.2 Other Safety Guidelines

Do not attempt to perform maintenance or repairs not covered in this manual. All repairs are

to be carried out by Greenspan or Greenspan trained personnel.


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3 OVERVIEW OF MINI-ANALYSER

3.1 The Greenspan Mini-Analyser

The Greenspan Mini-Analyser can provide a tailored solution to your specific monitoring

needs. Designed specifically to suit certain monitoring situations such as environmental,industrial discharge or single point of source. The Mini-Analyser can be configured to suit a

wide range of applications in a variety of locations.

Figure 3.1: Mini-Analyser


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3.2 Communications Interface

The connections to and from the Mini-Analyser

terminate at the communications interface as

shown in Figure 3.2

The communications interface has the following

features:

Modem interface. Modem power and data

connections are made here.

External sensor inputs. Up to 8 external 4 -

20 mA sensors may be connected.

Rain gauge input.

External alarm output. An external output

pulse can be generated from an alarm

occurring within the Mini-Analyser. This

can be used to trigger a warning bell or

light.

Pump control output. This controls the

pump that draws sample water from the

source (river, lake etc) into the sample pot.

Sampler trigger output. This can control an

external water sampler.

4 20 mA parameter outputs. Normally 4

but expandable to 8.

External output control signals. The

analyser can be configured with up to 20

additional 12Vdc outputs for controlling

external devices.

3.3 Serial Communication Port

To make a direct connection from a PC to the

Mini-Analyser, use the serial port located on the

lower right-hand side panel. The connector is

labelled User. Figure 3.2 shows the location

of this connector.

The connector is a standard 9-pin female D-

connector.Figure 3.2: Communications interface


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3.4 Battery Back-Up

The Mini-Analyser electronics are powered from a 12V DC lead-acid gel battery. The battery

is kept charged from the AC mains power. In case of loss of AC mains power supply the

battery can keep the Mini-Analyser running for many hours. The output of the battery charger

is set to 14.7VDC on charge and 13.8VDC on float. Do not adjust the power supply to anyother voltage.

3.5 Configuration File

The configuration file is stored in the Mini-Analysers memory and is a very important file.

The information it contains includes:

The serial number

Calibration data

Machine control code - for the control of pumps and valves

User configurable settings - site information, phone numbers, alarm settings and schedule

details.

Chemical store information - reagent levels, constituents etc.

A default configuration file is loaded into the Mini-Analyser at the factory. The Analyser32

software updates this file when user configurable settings are changed.


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3.6 Sample Delivery

When the Mini-Analyser requires sample for testing, the sample delivery system is initiated.

Upon initiation of the sample delivery system the Mini-Analyser starts the sample delivery

pump and pumps water through the sample pot for several minutes ensuring that the pot has

been flushed and filled with fresh sample. During the sample pumping a small valve on top of

the sample pot is closed. At the end of the sample-pumping period the pump stops and the

valve is opened venting the top of the pot to atmosphere. The Mini-Analyser then primes the

sample from the pot to the analysis area for several minutes. The system is now ready to

begin testing.

3.7 Optional 4-20mA Output

The Mini-Analyser can be configured to transmit sensor results to other control and datacapture / display systems such as those used in water treatment plants. This data can be

transmitted using an optional 4 - 20 mA current loop printed circuit assembly. Each assembly

is capable of four data outputs.

Voltage and current specifications: Supply voltage range 8 to 30VDC with 100R load.

Reverse polarity protected to 30VDC

Maximum load of 340R with 12V supply.

Fig 3.6: Sample deliver system


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4 WATER QUALITY PARAMETERS

This section details the various parameters measured by the Mini-Analyser providing

background information on:

What the parameters are.

How the Mini-Analyser measures these parameters.

4.1 Dissolved Oxygen

Dissolved oxygen refers to the amount of oxygen dissolved in the water. DO can be

significantly influenced by factors such as temperature, presence of dissolved salts and the

biological and chemical demand of the water.

To measure DO, the Mini-Analyser uses a galvanic cell type oxygen sensor. The sensor is a

lead-oxygen battery, which has a lead anode and gold cathode. Oxygen molecules enter thecell through a semi-permeable membrane. They then diffuse in the acid electrolyte and are

reduced at the gold electrode. A temperature compensated voltage output is proportional to

the partial pressure of oxygen concentration. The Mini-Analyser measures DO in %

saturation.

4.2 Electrical Conductivity

Electrical conductivity is a measure of how well a solution conducts electrical current. It can

be used to detect changes in the water system, ie new pollutants or rising salinity.

To measure EC the Mini-Analyser uses a flow cell with two electrodes. The Mini-Analysermakes a resistance/conductivity measurement using alternating current. Alternating current is

used in EC measurements to prevent polarisation occurring. The spacing and size of the

electrodes determines the cell constant. The Mini-Analyser EC sensor has a cell constant of

1 cm-1.

4.3 ORP

ORP, oxidation-reduction potential or redox measures the ability of a fluid to be oxidised or

reduced (give or take electrons) and is dependent on the types and concentrations of ions

present. Oxidation and reduction happen simultaneously; while one substance is being

oxidised the other is being reduced. Oxidation and reduction reactions occur until equilibriumis reached. Unreacted agents give the water the ability or potential to oxidise or reduce.

This potential is what is measured.

The Mini-Analyser measures ORP using a noble metal electrode. When a metal electrode is

exposed to varying concentrations of chemicals, an electric potential is developed. The Mini-

Analyser uses a platinum electrode for this purpose. The potential of the platinum electrode is

measured against that of a reference electrode made from Ag/AgCl. This reference electrode

does not vary its potential when chemicals in solution change. ORP is an aggregate measure

incorporating all ions that are oxidising or reducing agents. The result is given in mV.


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4.4 pH

The pH of a solution is a measure of hydrogen ion activity in a solution. It defines how acidic

or alkaline the solution is. Measured on a scale from 0 to 14, a value of 7 is said to be pH

neutral, less than 7, acidic and above 7, basic or alkaline.

The Mini-Analyser uses a flat, glass electrode pH sensor with a combined double junction

reference electrode. The glass has a special composition so that a potential is formed across it

in the presence of hydrogen ions. Inside the glass is an electrolyte of constant pH and

concentration and a reference electrode which gives a stable voltage as a comparison.

Between measurements the pH electrode is stored in moist air to prolong electrode life.

4.5 Turbidity

Turbidity is a measure of the amount of suspended solids in a solution. In natural water,

turbidity can be caused by clay, silt, small organic matter and microscopic organisms.

Turbidity is measured by passing light through a transparent cell containing the sample and

measuring the amount of scattered light with a detector. The Mini-Analyser uses a

nephelometer in which the detector is orientated at 90 to the emitter. This result is expressed

in NTU calibrated against Formazin Standards.

4.6 Ammonia and Ammonium

When ammonia is dissolved in water it reacts to form ammonium. Both species are normally

present in a solution but the relative amounts of each are influenced by the pH and, to a lesser

extent, the ionic strength of the solution.

When the Mini-Analyser performs a measurement of ammonia or ammonium all of the

species are converted to one type by pH adjustment.

4.6.1 Ammonia

Ammonia has the symbol NH3, and is a pungent colourless gas that is highly soluble in water.

A saturated water solution of ammonia contains about 30% ammonia at room temperature. Its

main uses are as a fertiliser, a refrigerant (or freezing agent) and for manufacturing nitric acid.

The Mini-Analyser uses an ammonia electrode that has a membrane separating the sample

from an internal solution. The membrane is permeable to gas and impermeable to water.

Dissolved ammonia in the sample solution diffuses through the membrane until the partialpressure of ammonia is the same on both sides of the membrane. The diffused ammonia gas

dissolves and its concentration in the form of ammonia is related to the internal concentration

of hydroxide ions. The measurement is then similar to a pH probe. The Mini-Analyser uses

pH 4 buffer to reset the response of the electrode.

Between measurements the Mini-Analyser keeps the electrode stored in a solution appropriate

to the sample range being measured. The check results are given in machine counts and the

test results are given in ppm.


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4.6.2 Ammonium

Ammonium has the symbol NH4. Formed during the breakdown of protein molecules from

organic matter by bacteria, NH4 occurs naturally in water systems.

Ammonium is measured with an ion specific electrode (ISE) and a separate half-cell reference.The electrode has an ammonium ion selective membrane. When ammonium is present in the

sample a voltage develops across the membrane and is measured with respect to the reference

electrode. The sample result is calculated by applying a 2-point calibration each time the

Mini-Analyser is used. The check results are given in machine counts and the test results are

given in ppm.

4.7 Nitrate

The chemical symbol for the nitrate ion is NO3. Nitrate is a very soluble ion and an oxidising

agent. It is often found with salts such as potassium (KNO3) or sodium (NaNO3). It is a

common ingredient in agricultural fertilisers.

The Mini-Analyser measures nitrate using an ion specific electrode (ISE) and a separate

reference half-cell. The electrode has a nitrate ion selective membrane. When nitrate is

present in the sample a voltage develops across the membrane and is measured with respect to

the reference electrode. The sample result is calculated by applying a 2-point calibration each

time the Mini-Analyser is used. The check results are given in machine counts and the test

results are given in ppm.

4.8 Phosphate

Almost all phosphorous found in natural waters is in the form of phosphates. Phosphates arecompounds, which include the molecule PO4. They are normally produced from phosphoric

acid H3PO4 by removing a number of hydrogen atoms and replacing them with a metal.

Commercially phosphates are used in water softeners and fertilisers.

The Mini-Analyser uses a colorimetric method to measure phosphate. Reagents added to the

sample react with the dissolved phosphate present to produce a blue colour, the strength of

which is relative to the amount of phosphate in the sample. A spectrophotometer is used to

measure this colour development. The turbidity of the sample is compensated for by

measuring an unreacted sample. As there is no filtering of the sample the phosphorus

measured by this process is termed total reactive phosphorus. The check results are given in

machine counts and the test results are given in ppb or ppm.


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5 GETTING STARTED CHECKLIST

The following is a checklist to follow when installing and using the Mini-Analyser for the first

time. Sections 6-11 will guide you through these steps.

1. Verify that the selected installation site and infrastructure is ready for the installation.

2. Ensure that the chemicals have been mixed according to the supplied Greenspan recipes,

placed in the bottles supplied with the analyser and are ready for the installation.

3. Check that the computer to be used at the site has HyperTerminal installed. Refer to

section 13.1.9 for detail on setting up HyperTerminal.

4. Install the user interface (Analyser32) on a PC or notebook computer for use at the site.

5. Carry out the installation of the Mini-Analyser and system components. See section 6

6. Set up communications. Set up modems, cables, initialisation strings and telephone

numbers. See section 7.

7. Set password access. See Analyser32 Manual, Section 4.

8. Start and stop the analyser. See section 8.

9. Enter schedule details. See section 8.

10.Set alarms and dialout phone numbers. See section 9.

11.Download from the data store. See section 10.

12.Check the chemical store. See section 11.

13.Check measurements and sensors. See section 12.


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6 INSTALLATION

The instructions detailed here are for a typical mains powered installation with a landline

telephone connection and one sample inlet. For the installation of optional components

consult Greenspan Technology or your local Greenspan representative.

6.1 Choosing the site

In most cases, by the time the installation stage has been reached, the sites will have been

chosen for the Analyser and the pump. To cover the possibility that your site has not been

chosen and prepared prior to the installation we will recap on the preferred criteria.

6.1.1 Positioning the Analyser

The Analyser cabinet should be positioned in a location that offers some protection from the

extremes of the weather. An air-conditioned room is ideal but a location on a wall or bench

with shelter from the sun and rain is equally acceptable. Extremes of temperature should beavoided ie below 5 Deg C and above 40 Deg C

The location should also be away from large electrical or magnetic fields and not be subjected

to vibration. High humidity with condensing vapour as you would find at a turbulent outflow

is another area to be avoided.

6.1.2 Positioning the pump

The installation of the pump, control module, cable and piping is usually the biggest part of

the total installation and will require many hours. The time required will depend on the

specific site and may vary considerably with each site but at least one full day may be required

for even a relatively simple site.

The purpose of the sample delivery pump is to supply a representative sample of the water

body being monitored to the analyser location at a flow rate between 20 to 60 litres per

minute. The position of the pump in the water source requires careful consideration. Take

care to avoid areas where weed, turbulence or silt may foul the pump or have an undesirable

influence on the parameters that are to be monitored.

The availability of mains power to the pump location is another factor that may influence the

siting of the pump. The practical limit for standard cable to supply power to the pump may be

as little as 25 metres. This distance depends on the start and run current demands of the pump

being used. For longer distances the cable size may need to be upgraded appropriate to the

distance involved and this can become quite expensive for long distances.

In a typical installation the pump should ideally be installed in a stilling well that is fixed

firmly to a pile or solid structure in the water source. The pump should be installed at a depth

that is not too close to the bottom to suck up silt or too near the top such that it may run dry

should the water level drop appreciably.

Security of the pump once installed also has to be taken into account.


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6.2 Setting up the Mini-Analyser

The Mini-Analyser has been designed to be able to be fixed to a wall using the optional Wall

Mounting Kit available from Greenspan. The unit is also fitted with rubber feet for sitting

directly onto a bench or tabletop. The primary requirement is that it be a level, stable surface.

6.2.1 Mounting the cabinets

To fix the cabinet to a wall the wall structure and fixing points must be able to support a

weight of 30 Kg. Use the optional wall mounting kit referring to the enclosed engineering

note for details on fitting the kit.

If the analyser configuration includes the larger chemical storage module then the complete

unit may be freestanding. The top and bottom modules are fixed together with four small

bolts. The requirement when freestanding is that it be a firm, level, stable surface and located

where the combined cabinets cannot be knocked over. The chosen location should also have

mains power and telephone services available unless alternative options have been purchased.

6.2.2 Unpacking the battery and sensors

Once the cabinet is in place, unpack and install the lead-acid gel battery. If you have

purchased the accessories cabinet fit the battery in that cabinet. If you do not have the

accessories cabinet do not install the battery in the electronics compartment as corrosion may

be a concern should the battery vent gas. Place the battery on the bench top or close to the

analyser cabinet.

Connect the supplied power plug-pack to the mains power outlet (100-240VAC 50-60Hz) and

the analyser 12V Batt input on the right-hand side of the analyser cabinet. Connect the cable

marked Battery to the battery terminals with black to the negative andred to the positive +.

If a digital multimeter is available, set it to read 12VDC and connect to the 12V battery

terminals. Note the voltage reading, it should be approximately 12.6V. Turn on the main

power switch for the plug pack and note the voltage again. It should now read 13.8V

indicating that the battery charger is on and operating correctly.

Some of the sensors will have been removed from the flow cells and packed for storage and

shipping. These will require unpacking and replacing in the flow cells in the analyser. The

pH and ORP electrodes will have protective cover caps that have to be removed carefully.

Wipe any excess liquid from the electrode. Check that it is undamaged and fit to the relevant

marked flow cell.

The ammonia electrode NH3 requires careful unpacking and preparation before use. Refer to

section 13.2.7 Ammonia for details.

Ammonium NH4 and nitrate NO3 are small replaceable tip electrodes that are fitted to an

electrode holder. These tips are packed dry in small glass vials during shipping. Remove the

tip from the vial and fit to the appropriate electrode holder. Both the glass vial and the

electrode holder will be marked with the parameter name. Once fitted to the holder the

complete electrode can be fitted to the parameter flow cell.

For full details on dealing with the sensors refer to section 13.2 Sensor Maintenance.


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The next step is to position the chemicals in the cabinet and connect the supply tubes. The

chemicals should have been mixed by a local certified laboratory and placed in the bottles

supplied with the analyser prior to the installation day. Place the solution bottles in the cabinet

and connect the colour coded pick-up tubes to the bottles. Refer to section 11 for full details

on the chemical store.

6.3 Configuring the communications

Communications with the Mini-Analyser can be done using the following options:

A serial link using a standard 9 way serial cable.

A landline modem or cellphone modem and the public telephone network.

The first option requires that the PC be directly connected to the analyser with a 9-way serial

cable. A notebook computer is a convenient choice of computer for this purpose.

The second option can use standard telephone networks, cellular networks and radio or

satellite phone systems as the communications link.

When on-site for the installation the direct connection method is essential for the setup and

testing that is required. The Greenspan supplied software, Analyser32 will need to be

installed on the computer for the installation. The computer should also have HyperTerminal

installed. HyperTerminal is a communications program included with Microsoft Windows but

is not always installed by default. Check that it is installed on the computer prior to

installation day.

6.3.1 Connecting the modem

The analyser will be supplied with a modem for connection to a telephone landline as

standard. The modem is positioned external to the analyser cabinet in a location of your

choice and connected to the analyser Modem connector on the right-hand side of the

cabinet. Two cables are supplied with the modem for connection to the power and data

connectors on the right-hand side of the analyser. These connectors are marked

Phone/Modem Power and Modem. The telephone landline will also need to be connected

to the modem using a modular connector.

Direct connection to the analyser is done from the computer to the analyser using the supplied

9-way serial cable. The connection to the analyser is on the lower right-hand side of the

cabinet and is marked User.

6.4 Installing the sample delivery module

6.4.1 Selecting a position for the module

The sample delivery module (sample pot) should be situated close to the analyser cabinet

(within 2 metres) and at a height slightly lower than the cabinet. If it is positioned higher than

the cabinet the possibility exists that sample may be able to syphon into the cabinet should

there be a tubing failure within the cabinet. The sample pot should also be positioned higher

than the water source so that the waste side can drain away once the pump is stopped. If the

installation location does not allow these criteria to be met, contact Greenspan Technology oryour local Greenspan representative.


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If the analyser is mounted to a wall, then the wall is also a good mounting point for the sample

pot. When the analyser is bench mounted the sample pot may be attached to the edge of the

bench top.

When choosing the mounting point be aware that two 25mm pipes will connect to the sample

pot from outside the building. One is the sample from the pump and the other is the samplewaste outflow back to the water source. The position should also allow for the removal of the

white cylindrical portion of the pot assembly for cleaning. Refer to section 13.1.7 Sample

Delivery Pot for details on maintenance.

6.4.2 Mounting the sample delivery module

The sample pot has a stainless steel mounting

bracket attached to it and this bracket has four

holes for fixing to a vertical surface. Use the

screws provided for fixing to a wooden surface or

the expanding bolts for a masonry surface. If your

fixing needs differ from these two choices

appropriate fixings will have to be obtained from

your local hardware supplier.

6.4.3 Connecting The sample delivery andAnalyser

Once mounted in position several connections

need to be made to the sample delivery module.

There are two connectors on the top of the pot

assembly. These two connectors are of differenttypes and cannot be interchanged. One connector

is for the sample temperature sensor and is a small

multi-pin connector on a short cable. The second connector is part of a small air valve on the

top of the assembly.

Connect the cable exiting from the analyser on the right-hand side marked Sample Temp to

the temperature sensor on the top of the pot assembly. The second cable marked Air Valve

should be connected on the top of the pot but left free at the other end. This will connect to

the pump control module to be installed later.

There are two small polyethylene tubes that also attach to the top of the pot assembly. One isthe sample pick-up that connects to the analyser and this tube will have the number 71 (violet

and brown) and is connected to the mating luer fitting directly in the middle of the top of the

pot.

The second tube is an air vent that can also vent a small amount of sample at times. This

2.5mm internal diameter tube will be supplied as a separate item (not connected to anything)

and will not have any fittings attached. Connect one end of the tubing to the 2.5mm barb

fitting on the top of the sample pot and run the free end of the tubing to a location where it can

vent liquid without harm. Do not place the free end in liquid or an enclosed place as it does

need to be open to clean air.

Once these cables and tubes have been connected to the pot assembly and analyser support

them by fixing to the wall or bench using appropriate clamps.

Fig 6.4: Sample delivery module


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6.4.4 Connecting the pump to the sample delivery

Once the pump has been installed the pipe has to be run to the analyser position for connection

to the sample delivery pot and another pipe of the same diameter or slightly larger run from

the sample pot back to the water source or some suitable drain. It may be convenient to run

both pipes and the power cable along the same route. If this is done ensure that the dischargepoint for the sample pot outflow does not influence the intake to the pump.

Greenspan personnel have found that it is easier to connect from the sample delivery pot

assembly to the sample supply and discharge pipes close to the analyser location with 25mm

flexible hose. The use of flexible hose close to the analyser reduces stress on the connections

and makes the task of routing the pipes to the sample delivery module easier. Usually this is

done from the entry point to the room where the analyser has been installed.

Connect the sample supply from the pump to the side of the sample pot marked inlet and the

discharge hose to the side marked outlet. Ensure all fittings that are threaded have been

assembled using teflon thread tape and have been tightened firmly.

Refer to section 3.6 and look at the diagram for the sample delivery system to verify that the

system installed conforms with this diagram.

6.5 Installing the sample delivery pump control module

In most cases the pump used will be powered from the mains power at the site. The analyser

outputs a low voltage signal to control this pump so some form of interface and control

module is required to do that task The Greenspan external pump control module provides this

with a switched 12Vdc 3A output.

The control module can be fixed to the wall or bench next to the sample delivery module or

fitted in the optional accessories cabinet. The control module comes fitted with a Din rail clip

so all that is required for mounting is that a 50mm long piece of Din rail be fixed at the

preferred mounting point and the module clipped to that rail.

Connect the cable from the sample delivery module to the connector marked Air Valve.

The connector marked Analyser on the control module and the connector marked I/P 4&5 /

Pump on the analyser communications interface are connected using the cable marked in the

same way.

Connect the cable from the power supply/charger marked Sample control 12V In to the

mating connector on the control module.

There is one connector left and this is the switched 12Vdc out of the control module. This

output is normally at 0V and goes to 12Vdc when the analyser enables the sample pump

control signal. A cable is supplied to connect to this output and interface with a suitable mains

power switching circuit (user installed) to enable the pump. Greenspan suggests a relay

appropriate to the voltage and current demands of the pump with a 12Vdc solenoid coil. This

method has proven to be simple and reliable. A qualified electrician may be required to install

the mains power relay and pump wiring.


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6.5.1 Checking the operation of the sample delivery

On completion of the installation of the pump, sample delivery and control module the full

sample delivery system can be tested using the computer and diagnostic routines in the

analyser. Refer to section 13.1.9 Running Diagnostics for details on setting up the computer

and connection.

Warning: If the pump is turned on manually (not using analyser control) without the

tubing fitted to the air vent port sample will be vented strongly from the port as the air

vent is normally open.

When connected to the analyser and at the diagnostic menu, select G Set/Clear External

output. This will give a selection of four external outputs to switch. Number 3 - Ext1 power

is the control output for the sample delivery. Ensure that the sample delivery is ready to

operate and press 3. This will toggle the output on and enable the pump at the water source.

Pressing 3 again will toggle the output off.

Enable the pump and verify that sample flow is happening and that the flow rate is as expected

with no leaks. When satisfied with the sample delivery disable the pump. Should problems

be encountered requiring assistance contact Greenspan Technology or your local Greenspan

representative.

6.6 Connecting or adding external devices

The analyser has considerable capability for external sensors to be fitted and can capture the

data from those sensors for inclusion in the on-board data logging and transmission. Because

of the large range of devices and connector types available it is not possible here to detail

fitting any of these devices to the analyser. Should you wish to connect any external sensorsto the analyser inputs contact Greenspan Technology or your local Greenspan representative.

6.7 Getting the Analyser commissioned

Now that the analyser, communications and sample delivery are in place, it is time to

commission and check that the analyser is functioning correctly. Refer to the Analyser32

manual section 18 and 18.1 for detail on commissioning the system.

While the analyser is running the commission regime look around inside the wet chemistry

side of the analyser to check that nothing has become disconnected during shipping to cause

any leaks. If a problem is noted and the correction of the problem is not obvious contact

Greenspan Technology or your local Greenspan representative.

6.7.1 Running some test schedules

After the analyser has been commissioned and checked for leaks it is time to run a test of the

full system. Refer to section 8 Schedules for details on setting up and running a schedule.

Complete details on working with the User Interface are in the Analyser32 software user

manual.


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Setup a schedule to run all tests and the sample delivery pump using periodic timing with a

period start of 0 hours and a trigger period of 1 minute. This will have the effect of

retriggering the schedule at the next 1 minute interval after the schedule stops effectively

causing the analyser to run continuously. This is a good method to use when testing the

analyser. Be aware that this timing is not recommended to be used under normal

circumstances as it increases the chemical usage considerably.

Allow this schedule to run several times before stopping the analyser as it will assist in the

stabilising of the sensors after shipping. Refer to section 12 Checking Measurements and

Sensors for details on how to check the sensors and analyse the results.

6.7.2 Testing a known sample

Now that everything is working and stabilised a schedule could be run using a sample with

known parameter values. This will verify the correct function of the analyser and sensors and

give confidence that the installation has been completed effectively.

To setup this schedule refer to sections 8.1.14 and 8.1.15 to disable the sample delivery pump

control for the period of this testing. Disconnect the sample pick-up tube number 71 from the

top of the sample delivery pot and place it in the known sample.

Edit the schedule to contain the tests for the parameters you wish to verify ensuring that the

fill/clean operations are unchecked and run the schedule. Allow the schedule to run for

several passes if possible and then download the data. Check the data using Aquagraph and

compare the results to those expected. Refer to section 12 Checking Measurements and

Sensors for assistance with evaluating the results.

When you have completed the verification testing reconnect the sample inlet tube 71 to the

port on the top of the sample delivery pot. If this is not done water will be vented strongly

from the open port on the sample delivery the next time the sample pump is operated.

Should there be problems that you cannot resolve, contact Greenspan Technology or your

local Greenspan representative.


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7 COMMUNICATIONS

Communications with the Mini-Analyser can be done using the following options:

Modem and communications network.

Serial link using standard serial cable.

The first option can use standard telephone networks, cellular networks and radio or satellite

phone systems as the communications link. The second option requires a site visit. A

notebook computer is a convenient choice of computer for this purpose.

7.1 Getting Started with the User Interface

Analyser32 is a fully featured program that allows the user to do tasks like setting up

schedules and calibrating sensors. Sections 8 through 10 of this manual give a brief overview

of the basic use of the interface. For more in depth information please refer to the Analyser32user manual

You may also find it useful to have a terminal emulator program such as HyperTerminal or

Telix. These programs are useful for specific tasks such as upgrading firmware (see Section

14), incorporating new sensors or functions and when setting the modem initialisation string

(see below). The terminal emulator program can also be used for diagnostic testing of the

Mini-Analyser. See section 13.1.9.

7.2 Installing a Modem

Some recommended modems for use with the Mini-Analyser:

Zoom Fax/Modem 56Kx.

US Robotics Courier V Everything 56k.

Banksia mymodem 56v

Diamond SupraExpress 336e and 56e.


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7.2.1 Setting the modem initialisation string

The modem initialisation string needs to be set should you change the type of modem used

with your Mini-Analyser. This can only be done at the site by a direct connection. Contact

Greenspan or your service agent before undertaking this task to obtain the correct initialisation

string for your modem.

Procedure:

1. Connect a PC to the Mini-Analyser serial communications port using a standard serial

cable.

2. Run a terminal emulator program such as HyperTerminal or Telix. For more information

on setting up these two applications refer to section 13.1.9. Running diagnostics.

3. Set the communication parameters to 19200 baud, 8 data bits, 1 stop bit and no parity.

4. When the terminal program is setup and a connection made with the Mini-Analyser areturn string will be displayed on the screen similar to 002.A034Y49NY10491520;. This

sequence may vary with different versions of firmware but will be similar.

5. Refer to the return string example in step 4 and note the characters that are underlined.

Look at the return string that has appeared on your PC screen after connection to the Mini-

Analyser and note these three characters. These refer to the version of firmware installed

in the Mini-Analyser.

6. Press the keyboard sequence *& by pressing SHIFT-8 and SHIFT-7 on the PC

keyboard. The factory menu will appear.

7. Turn caps lock on. Press M for Set Modem init string. The current init string will be

displayed and you will be prompted to change it or not. Press Y to change.

8. You can choose from the two default strings provided, one for normal, and one for cellular

phones or you can press E to edit. Choose a string or edit the current string. To type in

a completely new string use the edit option.

9. Press Y when asked to save the init string. Press any key and then exit the interface.


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8 SCHEDULES

Schedules control the operation of the Mini-Analyser chemical laboratory and external

sensors. They describe what tests are performed and when they are performed. By using the

Mini-Analyser user interface software, an operator can choose the tests to be performed by a

schedule. To set up a schedule, the operator of the Mini-Analyser performs the following

steps:

1. Create a new schedule.

2. Selects the tests to be performed and their order.

3. Chooses the activation mechanism for the schedule.

4. Sets the timer if required.

5. Enables the Schedule.

8.1 Working With Schedules Using Analyser32

8.1.1 Setting up a schedule

From the Main Menu press the Setup button. From the Setup Menu select Scheduling. TheSchedule Setup window shown in Figure 8.1.1 will appear.

To create a new schedule, press theNew button. If a schedule name already exists and youwant to modify it, select that schedule, then press theEditbutton. It is possible to create more

than one schedule.

Figure 8.1.1 The Schedule Setup window


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8.1.2 Creating or editing schedules

To access the schedule editor, pressNew orEditin the Schedule Setup window.

8.1.3 Entering a name

Enter a name for your schedule in the box located at top left of the window. If no name isentered then the Mini-Analyser will create one. The name can be up to 24 characters in

length.

8.1.4 Viewing and editing tests in the schedule

The Tests in Schedule list describes all of the tests to be performed in the schedule as well as

the fill and clean operations. The maximum number of tests permitted in one schedule is 20.

Fill operations bring the sample from the sample source to the Mini-Analyser chemical

laboratory ready for testing. Clean operations send leftover sample back to the sample source

and clean the line. If fill and clean operations are included in the schedule they are always run

at the beginning and end of the schedule respectively. To edit what tests are performed presstheEdit Tests button. For more information on this see section 8.1.14.

8.1.5 The schedule duration

The time it takes for the schedule to execute is displayed in the top right corner of the window.

This time is calculated by the software, based on which tests are selected. This information is

useful to help plan the timing of multiple schedules.

8.1.6 Timing a schedule

To set the times when the schedule will execute there are five options:

Periodic- A periodic schedule will execute at fixed time intervals.

Timetable - A timetable schedule will execute at specified times on a daily basis.

Event The schedule will start in response to a variation detected in another parameter.

External Trigger A signal from an external line will start the schedule.

InitialSchedule The Initial schedule will run immediately the Analyser is started and

run once only. Note. The Initial schedule will run once every time the Analyser is started.

8.1.7 Enabling the schedule

To enable a schedule, tick the Schedule Enabledbox. A schedule will not run without this boxbeing ticked.

8.1.8 The scheduler priority

Note: ANY SCHEDULE, WHICH IS DUE TO COMMENCE WHILE ANOTHER ISIN PROGRESS, WILL NOT RUN.

If two or more schedules are due to execute at the same time, the schedule

earliest in the list will run. The other schedule(s) will not run.


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8.1.9 Using periodic triggering

Periodic timing is set by selectingPeriodic from the Scheduled Times box in the schedule edit

window. See Figure 8.1.9.

The schedule will run first at thestart time. It will run again depending on what time is usedfor a Trigger Period. If the Trigger Period is larger than the schedule duration then the

schedule will run at the next trigger time. If the Trigger Period is less than the schedule

duration it will run again at the next trigger time when the scheduler is not already running, ie

this schedule will run continuously. If more than one schedule is required to run, avoid

conflict by making sure this is not the case.

Figure 8.1.9: Setting triggering to periodic


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8.1.10 Using timetable triggering

Timetable Triggering allows the user to set schedules to run at specific times rather than after

specified periods.

In the Schedule Editor, choose the timetable option under the heading, Scheduled Times.Next, press theEdit Timetable button. This brings up the timetable editor. See Figure 8.1.10

below.

Add times to the timetable by entering them in theEnter Time box and then pressing the

Add>> button. The new time will be added to the list in chronological order. To remove atime, highlight it in the list and press theDelete button. The Clear Allbutton removes all of

the times listed.

8.1.11 Using event triggering

Event triggering is used when you wish to have a schedule run in response to a change of acertain magnitude in another parameter, for example temperature.

You can select from a list of parameters to use as a trigger by pressing the down arrow in the

Triggerbox. The magnitude of change that is required to cause a trigger is entered into the

box labelledData Variation Value. When the sample data for the triggering parameter

changes by more than theData Variation Value, either up or down, it will trigger an Eventand start the second Event triggered schedule. The data value at this time becomes the new

reference point for theData Variation Value.

For this option to work a schedule that tests the trigger parameter must be enabled and started.

This provides the sample testing that can cause the event that will trigger the secondschedule.

Figure 8.1.10: The Timetable window


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8.1.12 Using the external trigger

The external trigger option allows a signal from an external source to start the schedule. This

trigger can be a negative going pulse or relay contact closure. The pulse should be a minimum

100S in duration, and pull the Mini-Analyser trigger input from 5VDC to ground. The relay

contact should provide a short duration ground (less than the period of the schedule) on theMini-Analyser trigger input.

This trigger could be from a SCADA system in response to a pump being activated or some

other event where you may wish to synchronise the sampling and testing by the Mini-

Analyser.

8.1.13 Using initial triggering

The Initial triggering is used to ensure that any regime that has to be run every time the

Analyser is restarted can be set to run automatically at start up.

The Initial schedule will run immediately after the Analyser is started and will run once onlyafter that start sequence until the Analyser is stopped. When the Analyser is stopped and

started again the Initial schedule will again run once for that start / stop sequence.

Any schedule setup to use the Initial trigger function should be created as the first schedule in

the list. This will ensure that the Initial schedule always runs first, irrespective of the timing

or triggering methods used for other schedules as the Analyser processes the schedules starting

from the first schedule in the list. Refer to Figure 8.1.13.

Figure 8.1.13: Setting the schedule to Initial


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8.1.14 Editing the tests for a schedule

This allows the schedules to be setup with a variety of tests. TheEdit Tests window is shown

in Figure 8.1.14.

The tests available are shown in a list on the left hand side of the window. To add a test to the

current list of tests shown on the right, highlight the test to add and press theAdd Test >>button. The same test can be added more than once to the schedule.

When the test is added to the list it is also given a channel number. The channel number is the

code used for the test in the data log. A schedule can be rearranged to execute in any order by

using the following buttons:

Push Test Up Move the position of a highlighted test up the list.

Push Test Down Move the position of a highlighted test down the list.

Delete Test Remove a highlighted test.

Clear All Tests Remove all tests from the list.

8.1.15 Adding fill and clean operations

These procedures bring the sample to the internal inlets of the Mini-Analyser and then clean

out the lines afterwards. The fill operations occur at the beginning of a schedule and clean

operations at the end of a schedule. If the automatic box is ticked fills and cleans will beautomatically added according to which internal inlets are used.

Figure 8.1.14: The Edit Tests window


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The fills and cleans can be manually deselected by unticking the Automatic box. There are a

few cases where this is desirable. For example testing procedures where a known solution is

used in place of a sample.

8.2 Starting a Schedule Using Analyser32

The Start Mini-Analyserwindow, shown in Figure 8.2, appears after pressing the Startbutton

in the main menu to turn the scheduler on.

8.2.1 The current date/time display

This display shows the settings on both the Mini-Analyser and computer. If the computer

settings are incorrect they should be reset. Use the Windows control panel to reset the time

and date information. The Analyser32 software will update the Mini-Analyser time and date

information with that of the PCs when the scheduler is started. It is important when using

External Triggering that the Mini-Analyser time be synchronised with the SCADAsystem time.

8.2.2 Inserting comments

Type text into the Commentfield to insert a comment in the data log. The length can be up to

128 characters. Comments are very helpful when trying to locate events in the data log or

troubleshooting problems with the Mini-Analyser. Aquagraph can display this comment

information.

8.2.3 Operator identification

You can type text in the Operator 1 and Operator 2 fields to record who started the scheduler.These fields will accept 3 characters.

Figure 8.2: The Start Mini-Analyser


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8.2.4 Clear memory

Clears all the logger memory. A warning will be displayed before the memory can be cleared.

Note: Once the memory is cleared all data that was in the logger is erased.

Ensure that all important data is retrieved before clearing the logger

memory.

8.3 Stopping a Schedule

To stop the Mini-Analyser press the Stop button in the main menu. The Stop Mini-Analyserwindow will appear as shown in Figure 8.3.

8.3.1 The last started display

A display at the top of this window gives the date and time the Mini-Analyser was last started.

8.3.2 Current date/time

This shows the settings on both the Mini-Analyser and computer. If the computer settings are

incorrect they should be reset via the Windows control panel.

8.3.3 Inserting a comment

Type text in the Commentfield to put a comment in the data log. The comment might be why

the Mini-Analyser was stopped. The length can be up to 128 characters. Again, commentsare very helpful when trying to locate events in the data log.

Figure 8.3: The Stop Mini-Analyser

window


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8.3.4 Operator identification

You can put text in the Operator 1 and Operator 2 fields to identify who stopped the

scheduler. This information is recorded in the data log. The field will accept up to 3

characters.

8.3.5 Confirming the end of scheduling

Once yourStop Mini-Analyserwindow details are correct press the Stop button. If thescheduler is currently performing operations the stop command will take affect as soon as the

Mini-Analyser is finished the current schedule.


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9 ALARMS

Alarms bring important events to the attention of the user and are normally used to notify the

user that action is required. An Mini-Analyser can be set to phone a remote location in

response to an alarm. Alarms can be used to trigger an external output.

9.1 Setting Alarms With Analyser32

To go to the Alarms window:

1. From the main menu choose Setup.

2. From the Setup menu chooseAlarms. TheAlarms window is shown in Figure 9.1.

There are 2 categories of alarm:

Sample alarms a result from a sensor test is outside preset limits.

System alarms part of the Mini-Analyser system requires attention. The 4 main system

alarms are triggered by:

Liquid volumes from the chemical store.

Memory level of the data log.

Battery level.

Water ingress - leakage of liquid inside the Mini-Analyser.

Figure 9.1: The Alarms window


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9.1.1 Setting the sample alarms

Sample alarms are triggered when an alarm threshold is reached. The channel alarm set

window allows for a high and low threshold to be set. Once triggered an alarm cannot be

activated again until the measured value crosses a re-enable threshold. This is to prevent the

unwanted activation of alarms due to small fluctuations.

To set a sample alarm, highlight the parameter of interest in the Channels box and press Set.

A Channel Alarm window will appear as shown in Figure 9.1.1.

To set an alarm, type in values for the Trigger Value and theRe-enable Value then tick the

correspondingEnabledbox. Press the OKbutton to confirm the change.

As a guide:

The low alarm re-enable value should be higher than the low alarm trigger value.

The high alarm re-enable value should be lower than the higher alarm trigger value.

9.1.2 Memory alarm

The memory alarm area is located in the top right corner of the Alarms window.

A memory alarm will be activated if:

The Memory alarm is enabled, and,

The amount of stored data in the memory goes above the trigger level.

Figure 9.1.1: The Channel Alarm window


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When the memory reaches full capacity the Mini-Analyser will stop. The data log should

be downloaded and then the memory cleared prior to restarting the Mini-Analyser.

The memory alarm can also be used to trigger the external output by ticking the Memory

External Outputbox.

9.1.3 The battery alarm

The battery alarm is located in the Channels box. The battery alarm does not have a re-enable

value and can only be triggered from a low alarm.

9.1.4 The solutions alarms

The solution alarms are located in the middle of the alarms window and can be set by

highlighting the relevant solution and pressing the Setbutton, a window like the one shown inFigure 9.1.4 will appear.

The default value for the trigger is set to 10% at the factory.

The Mini-Analyser will cease to operate when the volume remaining reaches 5%of the bottle value.

The Solution alarms have a common external output enable box located in theAlarmswindow. If this box is ticked any solution alarm will trigger an external output. See section

9.1.6.

Figure 9.1.4: The Solution Alarm window


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9.1.5 Water or liquid ingress

This alarm detects water ingress into the internal sensor compartment of the Mini-Analyser.

This alarm is triggered by a sensor that has two moisture-sensing electrodes and is located in

the drip tray at the bottom of the chemistry module.

Note: A water ingress alarm will cause the Mini-Analyser to cease operation.

Fingers or metal objects that come into contact with the sensor can trigger this alarm.

9.1.6 Enabling an external output

The Mini-Analyser has an external output that is enabled in the software. This external output

is in the form of a 500ms active low pulse. Other software or hardware can use this as a

trigger for a program or event. This could be in the form of making a bell ring or a light shine.

The steps to enable an external output are:

1. From the Main Menu choose Setup.

2. From the Setup Menu chooseAlarms.

3. Choose a source for the alarm ie pH, phosphate, Battery.

4. Highlight the source by clicking it and press the Setbutton.

5. Tick theEnable External Output on Alarm box.

The output (a 500 ms pulse active low) will occur if:

An alarm occurs, and,

The source of the alarm has itsEnable External Output on Alarm box ticked.

9.1.7 Alarms and the data log

When any alarm is triggered details of the alarm are written to the data log. The details logged

are:

The source of the alarm. For example, Nitrate, pH etc.

The value which caused the alarm to trigger.

The date and time of the alarm.

9.1.8 Enabling the alarm system

For any of the individual alarms to activate the Global Alarms Enabledbox needs to be ticked

in the bottom right corner of theAlarms window.


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9.1.9 Dialout on alarm

The alarm dialout function allows the user to receive notification of alarms from remote sites.

This feature is accessed by pressing theDialout Phone Numbers button in the alarms window.The window is shown in Figure 9.1.9.

The user can specify up to 4 phone numbers for the Mini-Analyser to dial in response to an

alarm. If an alarm is present the Mini-Analyser will look to see if the current time falls within

any of the time windows. If one is found the Mini-Analyser will dial the corresponding phone

number. For a dialout to happen a time window must be set.

To specify the amount of time the Mini-Analyser modem is powered up after an alarm dialout:

1. From the main menu choose Setup.

2. From the Setup menu choose Communication Times.

3. Enter the duration of power-up in minutes and seconds into the box labelled

Duration of Power up following an Alarm Dialout.

4. Press OK.

This time is set to give the user a period in which to dial up the Mini-Analyser and check the

cause of the alarm dialout.

Figure 9.1.9: The DialOut Phone Numbers window


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An alarm dialout will occur if:

There is no direct connection with the Mini-Analyser.

A valid telephone number and time window are set.

The current time is inside a dialout window.

An unacknowledged alarm exists.

The Mini-Analyser will attempt to call the corresponding phone number a maximum of 3

times.

9.1.10 Receiving dialout alarms

To receive a dialout alarm at a remote computer several conditions have to be met. The

telephone number that the Mini-Analyser dials must be for a modem connected to the remote

computer. This computer must also be powered on, running Windows and have theappropriate program (SmartStandby) running in the background. For further details on using

SmartStandby contact Greenspan Technology or your local Greenspan representative.

9.2 Clearing Alarms With Analyser32

TheAcknowledge Alarm window, shown in Figure 9.2, is accessed by pressing the

Acknowledge button in the alarm display area of the Main Menu.

Figure 9.2: The Acknowledge Alarm window


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9.2.1 Clearing the alarm

Pressing the Clear Alarm button will bring up a message asking the user to confirm that the

alarm is to be deleted. If the answer isyes the alarm is cleared and deactivated. A no answerwill return the user to the main menu.

After checking the Mini-Analyser to determine and rectify the cause of the alarm you will

need to re-enable the alarm. Refer to section 9.1.

9.2.2 Cancelling a dialout

Press theDialout Cancelbutton to stop the Mini-Analyser from continuing a modem dialoutsequence.

10 DOWNLOADING DATA

The data log is a record kept by the Mini-Analyser detailing the results of scheduled tests,

alarms and reagent levels. This data can be downloaded for graphical analysis usingAquagraph or archived for future reference.

10.1 Downloading Data using Analyser32

To download data from the Mini-Analyser press theData button from the Main Menu. The

Download Data window is shown in Figure 10.1.

The data files that will be stored on the computer are in a Greenspan data format. These can

be converted into a comma separated format for use with many common spreadsheets usingthe Aquagraph utility supplied with the Mini-Analyser.

Figure 10.1: The Download Data window


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Note: The Scheduler does not need to be stopped to download the data file.

10.1.1 Downloading the entire data log

The first option labelledAll Stored Data will download the whole data log. This option isuseful for archive and backup prior to clearing the data memory.

10.1.2 Downloading new data

SelectingData Since Last Downloadwill gather only the data recorded since the lastdownload. File markers are inserted where the data was last downloaded. These markers are

set at the end of the file once data has been downloaded.

10.1.3 Downloading data between dates

When theData between Following Dates option is selected the edit boxes forData From and

Data To are made available. The default From and To dates are the log start and end dates.

Data can be downloaded from between any dates. The file markers for the data since last

download are not adjusted when using the data between dates option.


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11 CHEMICAL STORE

The Mini-Analyser chemical store contains a variety of chemicals that can change from one

installation to another depending on the water parameters being measured. Some of these

chemicals are very corrosive, others can be hazardous to your health, which means that all of

them need to be handled with care and attention all of the time so that you normally have safework practices. Rubber gloves and eye protection should be worn at all times when handling

the chemicals to reduce the risk of contact and most importantly, work carefully.

The Mini-Analyser is supplied with two complete bottle sets. This is done so that chemicals

do not have to be poured into bottles at the site. With two sets, one can be in use at the Mini-

Analyser and the other at the laboratory being refilled. The empty bottles should be washed at

the laboratory before being refilled. When a chemical needs replenishing, the empty bottle is

taken out and a new bottle installed using the procedure below. The empty or near empty

bottles are then taken to the laboratory for refilling. This puts the hazardous handling of the

chemicals into the laboratory and reduces the risk of accident at the Mini-Analyser site.

The chemicals are connected to the Mini-Analyser by polyethylene tubing and Luer fittings.

This type of fitting is used widely and is very reliable and chemical resistant. A numbering

system is used to identify chemicals and tubes. When replacing reagents always check that

the labelled tube has the same colour code and numbering as the bottle it connects to.

11.1 Changing Solution Bottles

All of the chemicals have a number and colour allocated to them and this numbering follows

the colour code shown in table 11.1a.

Table 11.1a: Chemical colour code

Number 0 1 2 3 4 5 6 7 8 9

Colour Black Brown Red Orange Yellow Green Blue Violet Grey White

Table 11.1b: Chemicals and their allocated numbers

Chemical Number Chemical Number

pH/EC Standard 12 Phosphate 1 21

Standard 1 15 Phosphate 2 20

Standard 2 16 Phosphate 3 53

Cleansing solution 1 50 Phosphate 4 54

Air 51 Sample 1 71

Nitrate 55

Ammonia 1 23

Ammonia 2 49 Combined Waste 87

Ammonium 24 Non-Modified Waste 90


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Procedure:

14.Stop the scheduler if it is running, and wait for any remaining steps to finish.

15.Put on safety equipment - a protective coat, gloves and eye protection.

16.Connect a PC to the Mini-Analyser. Run Analyser32 and check which reagent requires

replacement.

17.Locate the bottle that requires replacement. Disconnect the tubing luer fitting.

18.Remove the bottle with dropper cap from the Mini-Analyser.

19.Unscrew the cap from the new bottle. Unscrew the dropper cap from the bottle being

replaced.

20.Check that the colour code on the bottle matches the colour code on the inlet tube.

21.Swap the caps on each bottle. DO NOT TOP BOTTLES UP, ALWAYS REPLACE WITHFRESH BOTTLES.

22.Place the new bottle back into position. Connect the tubing to the bottle and tighten the

luer fitting to be finger tight. Do not over tighten this fitting. Firm pressure is all that is

required.

23.Reset the volume level for the replaced solution in the chemical store, using the PC. Refer

to Section 11.2 in this manual to do this using Analyser32.

24.Do a visual check that the bottle volumes match the recorded bottle volumes displayed onthe PC and if necessary, edit the volume level in the chemical store.

25.Visually check the level of the waste bottle to see if it requires replacement.

26.You may now restart the scheduler or start logging if desired.

27.Exit the user interface, disconnect the serial cable from the Mini-Analyser.


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11.2 Updating Reagents Using Analyser32

The Mini-Analyser keeps record of the levels of solutions available in the chemical store.

This is done to notify you when they are close to empty and also to prevent the Mini-Analyser

from running when they are completely empty.

Note: The chemical store can only be edited or updated with the scheduler OFF

To access the chemical store database:

1. From the Main Menu choose Setup.

2. From the Setup Menu choose Chemical Store.

The Setup Chemical Store window shown in Figure 11.2a will appear.

If a complete refill of all bottles has been done you can quickly reset all volumes to full by

pressing the Set All Solutions as Fullbutton. A message will appear asking you to confirm

this.

To change the level of an individual solution highlight that row by clicking it with the mouse

and press theEditbutton, theEdit Reagentwindow shown in Figure 11.2b will appear.

Figure 11.2a: The Setup Chemical Store window


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If the bottle has been completely refilled tick theFull Solution Bottle Installedbox. To set the

level to something else click on the Current Levelbox and edit the data. In this window youcan also edit the alarm volume level in the Trigger Volume box and theActive Constituent

Concentration if applicable.

The concentration value is used in calibration procedures and analysis calculations. These

values would not normally be changed unless the concentration of the standard is changed.

Press the OKbutton to confirm your changes.

NOTE: Changing the active constituent values will change the data results. DO NOT

change these values unless you have been instructed to do so.

11.3 Waste Disposal

11.3.1 Unmodified waste

Unmodified waste has the same composition as the source. Therefore for disposal it can be

pumped back to the water source, to a drain or combined with modified waste depending on

the installation setup.

11.3.2 Modified waste

28.Modified waste is collected in a 20L plastic container. This waste must be treated by pH

neutralisation before disposal as the pH of the combined waste may be from 1.5 to 12

depending on the sensor installation in the Mini-Analyser.

Figure 11.2b: The Edit Reagent window


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12 CHECKING MEASUREMENTS AND SENSORS

It is important to be able to verify the accuracy of measured results. This is normally done

with the help of standards. Verification also tells you whether the sensor is operating properly

or if it may need maintenance or replacing. View the sensor check values using Analyser32 or

by viewing the data file using Aquagraph. Using Aquagraph to view a downloaded data file isbest as it allows you to see many data point and trends that cannot be seen with Analyser32.

When analysing data and encountering problems, refer to section 15 Troubleshooting for

assistance in locating the problem. For further assistance contact Greenspan Technology or

your local Greenspan representative.

12.1 Dissolved Oxygen

Each time the Mini-Analyser does a test on the DO a correction to the sample result is made

by applying a single point calibration. This is done to compensate for changes in the response

of the electrode. The DO check result does not have this correction applied to it and can beused as an indicator of the sensor condition.

Under normal operation the Mini-Analyser check will give a result for the dissolved oxygen of

the air bubbled deionised water. This value is 105%.

The Mini-Analyser check value can drift over time. This drift is usually a result of a change in

sensor characteristics. Once this result has drifted out of an acceptable range (20 %), then the

sensor may have to be cleaned, re-calibrated or replaced. Re-calibration may be achieved by

following the sensor calibration procedure (see section 12.3). If results for the sample vary

significantly from expected and the check results are acceptable then other causes may need to

be investigated. Contact your Greenspan Technology Service agent.

12.1.1 Analysing the DO data

The easiest way to check if the analyser is functioning properly is to use Aquagraph to graph

each process individually and check for unusual values.

What to graph

Graph both DO data series, DO 1 and DO check, on the same graph.

Checking results

When analysing the results, you should look for a steady check value around 105% and thedata returns expected results.

What should the graph look like if the

Analyser is working correctly?

The check values in the graph you obtain

should look something like this.


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What if the graph does not look like this?

The check value should remain steady. If this is not the case, ie drift, sudden variation or

unusual values, this may indicate that there is a problem. Data results will vary between sites

and over time but extreme variation, ie sudden peaks, indicates a possible problem. In either

case further action should be taken to discover the cause of unusual data.What to do if the graph is abnormal

If there is an obvious problem that does not seem to have a cause that you can determine,

contact your Greenspan Service Agent.

Note that data from a period of time with an obvious problem may not be valid and including

it in a data summary may lead to incorrect inferences.

Some typical graphs

Both the check value and the datavalue are very similar in value in graph

1. As the check should normally be

105% the analyser has applied

compensation to the data result giving

a value to the data that may be

incorrectly high. The DO should be

re-calibrated when the check value is

this incorrect. Note that this has been

done near the end of the graph and the

data is now valid.

In graph 2 the DO check value has

gone very low and the automatic

compensation has caused the result to

go very high. The most likely reason

is that the analyser has run out of

de-ionised water and is still running

(incorrect volume levels in the

chemical store). When the DI water is

refilled the check value returns nearnormal and the data is once again

valid.

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