Applications & Solutions - Eijkelkamp€¢Compliance with accuracies required according to ATV-DVWK...

Flowing Waters

Measurement Campaigns

WastewaterTreatment

Plant

ChannelNetworks

Industry

Applications & Solutions

Y O U R S P E C I A L I S T I N M E A S U R E M E N T T E C H N O L O G Y

The perfect solution for each application

Channel Networks 5 - 20

Wastewater Treatment Plant 21 - 36

Measurement Campaigns 37 - 52

Flowing Waters 53 - 56

Industry 57 - 59

This collection of applications is intendedto give you an overview on our fields ofoperation.If you should not find your application in thiscollection - please contact us.Our experienced application engineersgladly will assist you finding your solution.

Give us a call - Phone +49(0)7262-91 91-0

The NIVUS group is a worldwide leadingdeveloper, manufacturer and supplier ofmeasurement systems for the watereconomy.Our product range comprises measuringsystems for flow and level measurement.Furthermore we carry out demanding urbandrainage monitoring projects.

Channel Networks

Stormwater Treatment Facilities

Portable Measurements

Non-Portable Measurements

Seepage Water

Pump Stations and Lifting Facilities

Level Measurement In Pump Well page 8

Level Measurement Spiral Pump Control page 9

Flow Metering In Channel With Dry Weather Flume page 6

Measuring An Asymmetric Flow Profile page 7

Flow Measurement Overflow Multi-Chamber Stormwater Overflow Tank page 10

Overflow Volume On Trough page 11

Level And Overflow Measurement page 12

Tank Cleaning Control Using Only 1 Relay page 13

Flow Measurement Dump Seepage Water page 14

Flow Measurement To Create A Sewer System Masterplan page 15

Flow Measurement In Difficult Conditions page 16

Measurement Utilisation Channel Section page 17

Investigation Of Extraneous Water In Smaller Diameters page 18

Investigation Of Extraneous Water In Larger Diameters page 19

Temporary Overflow Measurement page 20

5

Application

Definition Of Task

Solution

• Accurate detection of dry weather discharge and combined water discharge

View of measurement placeView of measurement place

• A measurement system Type OCM Pro

has been used.

• To detect low volumes, the first sensor has

been installed in the dry weather flume.

Sensors 2 and 3 have been installed left

and right of the dry weather flume on the

side step. In combination with sensor 1

they detect flow velocities at higher levels

or the discharge of combined water.

Advantages:

• Straightforward programming due to pre-

set channel shapes.

• Utilisation of 2 analog outputs using

appropriate scales for dry weather and

rainy weather and hence high resolution of

readings.

Kanaln

etz

-SM

-OC

P_P

OA

-1-E

N / 2

7.0

4.2

009

Flow Metering In Channel With Dry Weather FlumeFlow Metering In Channel With Dry Weather Flume

• Segmented rectangular channel, 3 m width

• Part filled

• Rectangular channel made of concrete

• Channel with dry weather flume and side space

Installation principleInstallation principle

Reference ApplicationChannel Networks


NIVUS GmbH ● Im Taele 2 ● 75031 Eppingen, Germany ● Phone: +49(0)7262 9191- 0 ● E-mail: [email protected]

6

Application

Definition Of Task

Solution

• Detection of flow volume to wastewater treatment plant

• The measurement shall be as accurate as possible despite constantly fluctuating flow

conditions and varying flow profiles

View of measurement place and flow conditionsView of measurement place and flow conditions

• Providing highest measuring dynamics and

accuracy, a cross-correlation-based

system Type OCM Pro has been used.

By using 3 flow velocity sensors

simultaneously it is possible to detect and

to consider existing asymmetric flow

conditions.

• The sensors have been installed on the

channel bottom.

Advantages:

• Low installation costs

• Complies with requested accuracies by

utilising 3 velocity sensors

• Maintenance-free

Kanaln

etz

-SM

-OC

P_P

OA

-2-E

N / 2

7.0

4.2

009

Measuring An Asymmetric Flow ProfileMeasuring An Asymmetric Flow Profile


• Rectangular channel, 2.5 m

width

• Part filled

• Rectangular channel made

of concrete

• Fluctuating asymmetric flow

conditions

Reference Application


Channel Networks


7

Definition of Task

Solution

• Well diameter 1.8 m

• Depth of well 6.5 m

• Pressure pipe installed in the centre

• Pump control in alternate duty assist mode

• Switching points at levels of 2 m and 4 m

• Maximum level report

• Dry run protection

• Transmission of levels to control system

• An ultrasonic measurement Type

NivuMaster Ultra has been used.

The implemented variable pump mode

provides a great number of options such as

the alternate duty assist mode desired by

customer.

• Obstacles on the sides of the sonic lobe

such as ladders, steps, cables, pipes,

pumps and other constructions can be

covered using the built-in agitator

avoidance.

Advantages:

• Non-contact

• Measuring and controlling in one unit

Pump well with two pumpsPump well with two pumps

Schematic diagram of two pumps in Schematic diagram of two pumps in

alternate duty assist modealternate duty assist mode

Level Measurement In Pump WellLevel Measurement In Pump Well

Application

Kanaln

etz

-PH

-NM

-1-E

N / 2

7.0

4.2

009

Channel Networks

Pump Stations and Lifting Facilities



8

Definition of Task

Solution

• Wastewater lifting facility with three spiral

conveyors

• Delivery head approx. 9.00 m

• Non-contact level measurement for alternating control of spiral conveyors

• Redundant

• Panel mount enclosure unit

Inlet area of lifting facilityInlet area of lifting facility

Level Measurement Spiral Pump ControlLevel Measurement Spiral Pump Control

Application

Kanaln

etz

-PH

-NM

-2-E

N / 2

7.0

4.2

009

Channel Networks

Pump Stations and Lifting FacilitiesReference Application


Schematic diagram of a Schematic diagram of a

wastewater lifting facilitywastewater lifting facility

• An ultrasonic measurement transmitter

Type NivuMaster Ultra 5 panel mount

enclosure has been installed as non-

contact measurement. This unit not only

serves as alternating control for the spiral

conveyors, but also supplies min./max.

messages

• The redundant measurement is engaged

using an error message contact.

Advantages:

• The NivuMaster control has been set up by

the operator himself. This was to avoid

extensive re-programming of the PLC

system by third parties.

9

Application

Definition of Task

Solution

• Detection of overflow volumes to recipient

• Readings shall be transmitted to control system via analog and digital outputs

• High accuracy at varying overflow volumes per chamber

Measurement point to recipientMeasurement point to recipient

• Providing highest measuring dynamics and

accuracy, a cross-correlation-based system

Type OCM Pro has been used. By using 3

flow velocity sensors simultaneously it is

possible to detect and to consider existing

asymmetric flow conditions.

• The sensors have been installed on the

channel bottom. Protective metal sheets

prevent the sensors from being damaged.

Advantages:

• Low installation costs

• Complies with requested accuracies by

utilising 3 velocity sensors


Kanaln

etz

-RB

A-O

CP

_P

OA

-1-E

N / 2

7.0

4.2

009

Flow Measurement Overflow Flow Measurement Overflow

MultiMulti--Chamber Chamber StormwaterStormwater Overflow TankOverflow Tank

• Rectangular channel, 6 m width

• Part filled

• Rectangular channel made of concrete

• Simultaneous overflow from several chambers

into one common channel

• Short calming section upstream of

measuring point





10

Application

Definition Of Task

Solution

• Detection of overfall volume

• Creation of Q/H-characteristics for toothed sill according to DIN 19 558

• Forwarding of detected flow volumes to a process control system

• Compliance with accuracies required according to ATV-DVWK

• For this application 2 ultrasonic level meters

Type NivuMaster with 2 sensors each have

been used for average value measurement .

• Average values coming from the sensors

(combination of 2 sensors left and right of

overflow trough) are routed to an universal

transmitter (NivuCont). This unit converts the

average values into volumes (Q/H-

characteristic), summing the values

subsequently up as overflow total.

• The total volume output is sent to the process

control system (PCS) as analog signal.

Kanaln

etz

-RB

A-N

M_N

CP

-1-E

N / 2

7.0

4.2

009

• Stormwater basin with overflow sill

constructed as trough

• Overflow edge constructed as toothed sill

• No backwater from recipient

• Overflow into trough from both sides

• Total length of sill: 24 m

Overflow Volume On TroughOverflow Volume On Trough

Overflow sill as trough in basinOverflow sill as trough in basin

Schematic diagramSchematic diagram



Channel Networks


11

Definition of Task

Solution

• Stormwater overflow tank with cover

• Maximum overflow head 0.35 m

• Very low distance between weir crest

and ceiling (0.50 m)

• Detection of impoundage (beginning and end)

• Output of tank overflow (beginning, end and overflow volume)

• Reliable non-contact measuring at lowest distance between ceiling and maximum

water level

• An ultrasonic measurement transmitter Type

NivuMaster LF-5:2 has been installed.

Thanks to comprehensive programming

options and numerous outputs it is possible

to calculate and to output the parameters

"Tank Impoundage“, "Tank Overflow“ and the

overflow volume (as requested by German

ATV-DVWK organisation) by using only one

unit.

• Using an innovative tilted mirror allows to

install the ultrasonic sensor close to the

maximum water surface level.

Advantages:

• Saves time and costs since only one device

is required.

Ultrasonic level measurement with tilted mirrorUltrasonic level measurement with tilted mirror

Level And Overflow MeasurementLevel And Overflow Measurement

Application

Kanaln

etz

-RB

A-N

M-1

-EN

/ 1

4.0

3.2

009

Channel Networks

Stormwater Treatment FacilitiesReference Application

Schematic DiagramSchematic Diagram


12

Tank Cleaning Control Using Only 1 RelayTank Cleaning Control Using Only 1 Relay

Definition of Task

Solution

•

• Open stormwater overflow tank

• Depth 4.0 m

• Water jets as cleaning instruments

• The level shall be detected with a pressure measurement cell

• Up to 5 cleaning instruments (water jets) are to be controlled

• Tank cleaning control shall be implemented using only one transmitter

Schematic diagram of tank cleaning control Schematic diagram of tank cleaning control

• The level measurement has been

implemented using a transmitter Type

NivuCont Plus in connection with a 2-wire

pressure probe NivuBar Plus.

• The NivuCont controls the cleaning

instruments depending on level and trend

as well as within certain cycles.

Advantages:

• Cost-efficient tank cleaning using one relay

output.

• No PLC required – comprehensive PLC

programming through third parties was not

necessary.

Application

Kanaln

etz

-RB

A-N

CP

_N

BP

-1-E

N / 2

7.0

4.2

009

Devices usedDevices used

Channel Networks

Stormwater Treatment FacilitiesReference Application


13

Application

Definition of Task

Solution

• In order to protocol the hydrology of a dump it is necessary to record the delivery of a

groundwater spring emerging within the dump area

• Spring water tending to mineral sedimentation

• Measuring shall be accurate, long-term stable and as low in maintenance efforts as possible

• The measurement had to be implemented within the area of an existing collector trough

without too much efforts

Measurement on V weirMeasurement on V weir

• Due to low flow volumes it was necessary to

use weir measurement according to Thomson

(V weir).

• The non-contact ultrasonic measurement

system Type NivuMaster is used to detect

overflow height.

• Collector trough and weir opening have been

constructed to obtain the best possible

accuracy.

Advantages:

• Maintenance is limited to regular visual

controls and occasional removal of

sedimentation.

• The replaceable weir plate allows adjustment

in case of higher water volumes.

Kanaln

etz

-SW

-NM

-1-E

N / 2

7.0

4.2

009

• Pipe diameter 0.2 m

• Part filled

• Pipe made of HDPE

• Maximum discharge flow rate 1.5 l/s

Measurement placeMeasurement place

Flow Measurement Dump Seepage WaterFlow Measurement Dump Seepage Water


Seepage Water


14

Definition of Task

Solution

• Pipe diameter 0.5 m

• Part filled

• Pipe made of concrete

• High discharge dynamics

• Risk of sedimentation

• In order to create a sewer system masterplan it is necessary to record precipitation, flow,

level and impoundage through a minimum period of 3 months

• There is no power supply available at the measurement point

• Very high discharge dynamics can be expected from lowest filling levels up to impoundage

conditions. Pump effects (hydraulic bores) are expected.

• Data are forwarded in ASCII format

• Using the portable measurement system Type

PCM Pro with several sensors allows

measurements independent from mains power

supply through longer periods.

• High dynamics at the measurement point are

detected reliably thanks to 1-minute measuring

cycles.

• Data is saved on CF card in ASCII format.

Advantages:

• Combining various level sensors using different

measurement principles allows accurate

measuring in every situation.

• The standard data format enables the use of

data with any common evaluation application

without the need for special software.

Sensor installationSensor installation

Flow Measurement To Create A Flow Measurement To Create A

Sewer System Sewer System MasterplanMasterplan

Application

Kanaln

etz

-PM

-PC

P-3

-EN

/ 0

9.0

9.2

009

Combined use of various level sensors Combined use of various level sensors


Portable Measurements


15

Application

Solution

• Drainage line of a recreation park with

0.3 m diameter

• Part filled

• Drainage line made of dilapidated concrete

• High discharge dynamics and turbulent discharge

due to upstream forwarding pump

• Ex zone 1

• Investigation of channel capacity and billing apportionment due to planned expansion of

recreation park

• Accurate detection of flow volumes to be capable of dimensioning the new wastewater line

to build

• The measuring system used shall be able to reliably handle the poor hydraulic conditions,

high discharge dynamics and the required measurement accuracy

• To compensate the poor hydraulic discharge

conditions, a portable measuring pipe Type NPP

has been inserted into the delivery pipe using an

inflatable balloon.

• The 90°elbow causes full filling of the pipe

providing best possible measurement conditions.

• Flow velocity has been detected using ultrasonic

cross correlation.

• Power supply of the system and data storage have

been implemented by using the battery-powered

PCM Pro transmitter.

Advantages:

• Easy, quick and safe installation due to lightweight

measuring pipe.

• Accurately defined cross-section of measuring pipe.

• Highest accuracy thanks to homogenised flow at

the measurement point.

Measurement system temporarily Measurement system temporarily

installed in channelinstalled in channelDefinition of Task

Flow Measurement In Difficult ConditionsFlow Measurement In Difficult Conditions

Kanaln

etz

-PM

-NP

P-1

-EN

/ 2

7.0

4.2

009

Channel Networks

Portable MeasurementsReference Application


Installation principle of Installation principle of

measurement systemmeasurement system

16

Definition of Task

Solution

• Pipe profile with 1.2 m diameter

• Part filled


• Risk of sedimentation

• Levels temporarily tending to zero

• No power supply available

• To investigate precipitation discharge and channel utilisation it is necessary to temporarily install

a flow measurement

• Even lowest levels by night are to be measured reliably

• Sedimentation must not lead to measurement failures

• The portable flow measurement system

Type PCM Pro has been used.

• The sensor has been placed slightly out of

the centre to avoid failures due to

sedimentation.

• A sensor-integrated pressure

measurement cell allows to detect

channel impoundage.

• The system has been extended by an air-

ultrasonic sensor (LUS) in order to reliably

measure even lowest nightly discharge.

Advantages:

• Highest flexibility of the measurement

system.


Measurement Utilisation Channel SectionMeasurement Utilisation Channel Section

Measurement point in channelMeasurement point in channel

Application

Kanaln

etz

-PM

-PC

P-1

-EN

/ 2

7.0

4.2

009

Channel Networks



17

Definition of Task

Solution

• Pipe with 0.2 m diameter

• Part filled

• Pipe made of vitrified clay

• Lowest flow volumes

• Ex zone 1

• Flow volumes shall be measured continuously in order to investigate extraneous

water load

• Particularly lowest flow volumes are to be detected reliably

• Quick and easy installation required

• No power supply available. The portable measurement system used has to have a long

battery lifetime

• The portable, ex-protected flow measurement

system Type PCM Pro has been used.

• The system has been extended by an additional

NIVUS Pipe Profiler (NPP) in order to measure

even lowest flow volumes.

Advantages:

• Easy, straightforward and quick installation

• High accuracy and reliability

• Long battery lifetime (more than 30 days)


Investigation Of Extraneous Water In Investigation Of Extraneous Water In

Smaller DiametersSmaller Diameters

Application

Kanaln

etz

-PM

-PC

P_N

PP

-1-D

T / 2

7.0

4.2

009


measurement systemmeasurement system

Channel Networks



18

Definition of Task

Solution


• Part filled


• Ex zone 1

• Dry weather flow volumes shall be measured continuously in order to investigate extraneous

water load in the channel system

• Particularly lowest flow volumes by night are to be detected reliably

• Quick and easy sensor installation required

• The portable transmitter shall be easy to operate

• The portable flow measurement system

Type PCM Pro has been used.

• A pipe mounting system (RMS) has been

used for quick and secure sensor

fastening.

• An air-ultrasonic sensor (LUS) has been

used to even detect lowest flow levels.

Advantages:

• Easy, straightforward and quick installation

• High accuracy and reliability

• Transmitter easy to operate


Application


Kanaln

etz

-PM

-PC

P-2

-EN

/ 2

7.0

4.2

009

Channel Networks



Investigation Of Extraneous Water In Investigation Of Extraneous Water In

Larger DiametersLarger Diameters

19

Definition of Task

Solution

• Stormwater overflow manhole,

diameter approx. 2 m

• 4 inlets with various diameters in manhole

• Overflow sill in manhole

• No power supply available

• Providing proof of overflow via sill as planning basis for construction of planned stormwater

overflow tank

• Detection of overflow volumes, levels, duration and frequency

• Measuring and storage of data without external power supply

• Data saved in ASCII format

• Compact construction measurement system

• An event-controlled pressure probe with

integrated battery-powered data logger has

been installed (Type: MemoBar).

• The variable storage cycles are controlled by

internal level limit values. For this reason high

data density is generated at the beginning of

overflow events. On the other hand data density

is low during unimportant dry weather periods.

Advantages:

• The variable storage cycles ensure a very long

lifetime of the measuring and logging system.

Probe Overflow sill

Measurement system installed inMeasurement system installed in

overflow manholeoverflow manhole


measurement system measurement system

Temporary Overflow MeasurementTemporary Overflow Measurement

Application

Kanaln

etz

-PM

-HS

A-1

-EN

/ 2

7.0

4.2

009

Channel Networks



20

Sludge Treatment


Denitrification Stage

Intake Area

Wastewater Treatment Plant

Flow Measurement At Overflow Sill page 22

Flow Measurement In Small Sewage Works page 23

Flow Measurement Behind Grit Chamber page 24

Flow Measurement With Pontoon page 25

Comparative Measurement On Grid Rack page 26

Level Measurement In Grease Trap page 27

Recirculation Flow Measurement page 29

Return Sludge Flow Measurement page 30

Hot Sludge Flow Measurement page 31

Flow Measurement With Catamaran page 28

Discharge Area

Flow Measurement Using Inverted “Goose Neck” Siphon page 32

Bypass Flow Measurement page 33

Partial Discharge Section Flow Measurement page 34

Flow Measurement In Venturi Flume page 35

Flow Measurement Using Impoundage Shield page 36

21

Definition of Task

Solution

• Pipe with 1.5m diameter, overflow on the side

• Part filled


• The stormwater overflow at the inlet are of a wastewater treatment is to be measured

according to mandatory surveillance.

• According to ATV-DVWK volume, time and duration of overflow have to be measured.

• The non-contact ultrasonic measurement

system Type NivuMaster has been used.

• All established discharge characteristics, which

may be selected depending on the shape of the

sill, are stored in the transmitter.

Advantages:

• Day totals and overall totals are recorded using

integrated counters. For this reason no

additional PLC is required.

• Clear text menus lead the user through the

system configuration process. The complete

application parameters may be set up by a few

settings.

StormwaterStormwater overflowoverflow

Flow Measurement At Overflow SillFlow Measurement At Overflow Sill

Application

Kla

era

nla

ge-R

A-N

M-1

-EN

/ 2

7.0

4.2

009





Measurement principle at overflow weir Measurement principle at overflow weir

22

Definition of Task

Solution

• Pipe line width 0.2 m

• Part filled

• Pipe line made of HDPE

• Low flow levels of 4-5 cm

• Cramped conditions at measurement point

• The flow volume at the intake of a small sewage works shall be measured continuously.

• A relay impulse is to be sent from transmitter to PLC after each cubic meter of wastewater.

• The measurement used shall be cost-effective.

• Quick and easy installation required.

• Flow measurement according to the classic

Doppler method (OCM FR) using a pipe sensor

has been used.

• The measurement has been installed within a

manhole.

• An external ultrasonic level sensor

(NivuCompact) has been used to measure even

lowest filling levels.

Advantages:

• Low purchase costs.

• Easy and quick installation of measuring

section thanks to the use of pipe couplings.

• No flanges required.

Measurement pointMeasurement point

Top view on measurement point in manhole Top view on measurement point in manhole

Flow Measurement In Small Sewage WorksFlow Measurement In Small Sewage Works

Application

Kla

era

nla

ge-Z

B-O

CF

_N

MC

-1-E

N / 2

7.0

4.2

009




Intake Area

23

Definition of Task

Solution

• Two pipes with 0.6 m diameter

• Full filled

• Made of stainless steel

• Pipes previously installed

• Individual volumes shall be measured continuously to achieve even distribution and hence the

best possible settling behaviour of the volumes within the parallel grit chambers using the

upstream control slider.

• Existing pipes shall not be dismantled for installation of measurement system.

• Welding works within the pit shall be avoided.

• The particularly for full pipes developed

flow measurement system Type NFP has

been used.

• Sensor nozzles have been fastened on

existing stainless steel pipe lines by using

tensioning belts.

Advantages:

• Easy, simple and quick upgrading without

the need for welding works.

• High accuracy and reliability.

Flow Measurement Behind Grit ChamberFlow Measurement Behind Grit Chamber

Measurement pit behind grit chamberMeasurement pit behind grit chamber

Application

Kla

era

nla

ge-Z

B-N

FP

-1-E

N / 2

7.0

4.2

009




Intake Area


24

Definition of Task

Solution

• Rectangular channel 1.4 x 1.2 m (w x h)

• Part filled

• Walls and bottom made of concrete

• Sedimentation on channel bottom due to low

flow velocities

• Continuous measurement of intake volumes to wastewater treatment plant

• Consideration of varying sedimentation levels on the channel bottom to ensure a maximum

measurement deviation of 5%

• Measurement shall be installed and maintained under process conditions

• NIVUS recommended a floating measurement

array. Flow is going to be measured here using

the cross correlation method (OCM Pro).

• The floating sensor calculates the flow volume

from the detected flow level and the flow profile.

Sedimentation layers are detected and

compensated automatically.

Advantages:

• The mechanical components have been

manufactured at reasonable costs on behalf of

the customer according to NIVUS

specifications.

Pontoon with holding barPontoon with holding bar

Construction principle of floating Construction principle of floating

measurement measurement

Flow Measurement With PontoonFlow Measurement With Pontoon

Application

Kla

era

nla

ge-Z

B-O

CP

-1-E

N / 1

4.0

3.2

009




Intake Area

25

Application

Definition of Task

Solution

• Measurement of primary and secondary impoundage to calculate switching thresholds for

grid rack operation

• Maximum primary impoundage has to engage an emergency bypass

• Level difference, primary and secondary impoundage are to be indicated

• Forwarding of readings and switching points to following control system

• The task may be solved easily and cost-effective

by using two echo sounders Type NivuCompact

with intrinsically safe power supply in connection

with the NivuCont Plus transmitter.

• Clear text menus lead the user through the

system configuration process. The complete

application parameters may be set up by a few

settings.

Advantages:

• Complete control algorithms may be implemented

beyond utilising primary impoundage levels,

secondary impoundage levels and level

differences. An additional PLC is not required.

• Installation has been effortless due to the low

dead zone of the sensors used.

Kla

era

nla

ge-Z

B-N

MC

_N

CP

-1-E

N.p

pt /

14.0

3.2

009

Comparative Measurement On Grid RackComparative Measurement On Grid Rack


• Low-pitched sensor installation points

• Covers on rectangular channels must not be opened

• Ex zone 1

View of fine rack View of fine rack

Application diagramApplication diagram




Intake Area

26

Definition of Task

Solution

• Grease trap

• Depth of pit: approx. 4 m

• Medium: wastewater with grease contents and

temporary foam formation

• The level of the wastewater-grease mixture in the pit shall be measured reliably.

• A pressure measurement probe has to be used for detection. It is not possible to use a non-

contact ultrasonic probe due to foam formation from time to time.

• Accumulation of grease must not lead to sensor cable damage.

• Maintenance and cleaning measures shall be quickly, easily and safely executable.

• Utilisation of a submersible probe (special version

of NivuBar Plus II) with integrated G 1“ outer

thread for direct installation of a protective pipe.

Advantages:

• The installed pipe protects the cable from caking

and against mechanical stress.

• Removing the probe regularly for cleaning

purposes is significantly facilitated.

• The pressure probe is fastened safely using the

protective pipe. This helps to facilitate accurate

depth adjustment (zero point).

Application

Grease trapGrease trap

Level Measurement In Grease TrapLevel Measurement In Grease Trap

Kla

era

nla

ge-Z

B-N

BP

-1-E

N / 0

1.0

4.2

009

NivuBarNivuBar Plus in special version Plus in special version „„GG““




Intake Area

• Grease trap

• Depth of pit: approx. 4 m

• Medium: wastewater with grease contents and

temporary foam formation

27

Flow Measurement With CatamaranFlow Measurement With Catamaran

Definition of Task

Solution

Float for sensorFloat for sensor

• The measurement has been implemented using

a volume measurement system Type OCM Pro

CF including a catamaran.

• Flow volume is calculated using flow velocity and

flow level which are measured by a floating

sensor. Sedimentation on the channel bottom will

be detected and compensated automatically.

Advantages:

• Despite the large channel width of 2 m it was

sufficient to use one flow sensor to meet

accuracy requirements. The deviation compared

to the reference system is less than 3 %.

• The mechanical components have been

manufactured at reasonable costs on behalf of

the customer according to NIVUS specifications.


• Part filled

• Channel walls and bottom made of concrete

• Risk of sedimentation on channel bottom

• Channel cannot be drained

• The flow in the inlet channel of the denitrification stage is to be measured in order to control

internal substance cycles.

• Measurement uncertainties lower than 5 % are required although sedimentation might settle.

• Measurement shall be installed and maintained under process conditions

Application

Kla

era

nla

ge-B

L-O

CP

-1-E

N / 1

7.0

3.2

009

Schematic diagramSchematic diagram




Denitrification Stage

28

Definition of Task

Solution


• Full filled

• Pipe made of stainless steel

• High pollution load, up to 1 % dry solids

• Return sludge is lifted to delivery pit via spiral conveyor. It subsequently flows through a

horizontal pipe to the measurement shaft.

• The application already has 2 measurements (1x EMF, 1x clamp-on) which however did not

operate reliably due to high contents of dirt and gas bubbles. The new system shall solve the

problems without the need for comprehensive installation measures.

• The flow measurement system Type

NFP has been used.

• A hole has been drilled into the existing

stainless steel pipe and an appropriate

nozzle has been installed. Subsequently

a ball valve for sensor removal under

process conditions has been installed

and the sensor has been adjusted and

fixed.

• Advantages:

• Easy, simple and quick upgrading of

existing facilities.

• Old measuring devices were not

necessarily to be removed.

• Reliable measurement despite high dry

solid contents.

Setup of measurement placeSetup of measurement place

Recirculation Flow MeasurementRecirculation Flow Measurement

View of measurement shaftView of measurement shaft

Application

Kla

era

nla

ge-S

B-N

FP

-2-E

N / 2

7.0

4.2

009


Sludge TreatmentReference Application


29

Definition of Task

Solution


• Full filled

• Pipe line made of stainless steel

• Point of installation in telescopic pipe

• The volume shall be measured in order to monitor and to control smooth sludge discharge

from final clarification tanks.

• The vertically retractable telescopic pipe is the only possible access to the medium.

• Maintenance-free operation with measurement uncertainties better than 5 % required.

• Installation without the need for comprehensive reconstruction measures.

• The flow measurement system Type NFP for

full pipes has been used.

• The fully submersible sensor Type POA has

been installed in the top section of the

telescopic pipe.

• Flow profile detection enables accurate flow

measurement. Dry solid contents higher than

1% do not affect the measurement.

Advantages:

• Easy and cost-effective upgrading

• High reliability and reproducibility

• Insensitive to pollution


Telescopic pipe in operationTelescopic pipe in operation

Measurement principle Measurement principle

Return Sludge Flow MeasurementReturn Sludge Flow Measurement

Application

Kla

era

nla

ge-S

B-N

FP

-3-E

N / 2

7.0

4.2

009




Sludge Treatment

30

Hot Sludge Flow MeasurementHot Sludge Flow Measurement

Definition of Task

Solution


• Full filled


• Medium contains oil and grease

• Hot sludge

• Digested sludge from a digestion tank is constantly pumped through a heat exchanger.

• The sludge flow volume shall be measured continuously in order to immediately detect a

blocked heat exchanger or fading pump performance, ensuring permanent heat supply to

the rooms of the wastewater treatment plant.

• The flow measurement system Type NFP has been

used.

• A hole has been drilled into the existing stainless

steel pipe line and a nozzle has been welded.

Subsequently the flow velocity sensor has been

adjusted and fixed.

Advantages:

• Easy, straightforward and quick upgrading of

existing facilities.

• High measurement accuracy and reliability despite

heavy pollution.Measurement place with installed sensorMeasurement place with installed sensor

Heat exchangerHeat exchanger

Application

Kla

era

nla

ge-S

B-N

FP

-1-E

N / 2

7.0

4.2

009




Sludge Treatment

31

Definition of Task

Solution


• Full filled


• EMF, faultily installed

• EMF has indicated much too high readings most of the time due to air within the pipeline

and a much too short calming section.

• Uncomplicated and quick upgrade wanted, shall be accurate, reliable and cost-effective.

• A measurement system Type NFP has

been used.

• The pipe reaching into the discharge

manhole has been equipped with an

additional pipe section, an elbow (“goose

neck“) and with a welding nozzle for flow

velocity sensor installation.

• The elbow renders a constantly filled pipe.

Advantages:

• Easy, straightforward and quick upgrading

of existing facilities.

• Saves costs for pipe section and

gate valve.

Flow Measurement Using Inverted Flow Measurement Using Inverted ““Goose NeckGoose Neck”” SiphonSiphon

Installed measurement

Application

Kla

era

nla

ge-A

B-N

FP

-1-E

N / 2

7.0

4.2

009


Discharge AreaReference Application


Measurement SetupMeasurement Setup

32

Definition of Task

Solution


• Full filled


• Previously installed EMF

• The EMF reducing the pipe from 0.2 m to 0.08 m diameter caused obstructive backwater

formation during peak times.

• The customer wants a cost-efficient, reliable and backwater-free measurement in the 200 mm

pipe line.

• Installation shall be carried out without the need for comprehensive modifications (such as

additional flanges, gate valves or similar).

Bypass Flow MeasurementBypass Flow Measurement

• The existing emergency bypass

has been replaced by a pipe with

0.2 m diameter and a nozzle. The

NFP sensor is installed in the

nozzle.

• It is not necessary to use a stop

valve if a ball valve is used. This

allows to exchange or to control

the sensor under operating

conditions.

• Old measurement remains on site

without being dismantled.

Advantages:

• Easy, straightforward and quick

upgrading of existing facilities.

Top view on schematic measurement setupTop view on schematic measurement setup

Application

Kla

era

nla

ge-A

B-N

FP

-2-E

N / 2

7.0

4.2

009




Top view on measurement placeTop view on measurement place

33

Partial Discharge Section Flow MeasurementPartial Discharge Section Flow Measurement

Definition of Task

Solution

Pump room with discharge line Pump room with discharge line

on rear wallon rear wall

Sensors installed in pipe lineSensors installed in pipe line


• Full filled


• A partial discharge section of a wastewater treatment plant shall be measured for final

clarification tank control.

• Loading and unloading of tap water is controlled on the measurement point additionally.

• Detected readings have to be forwarded to a PLC for control purposes.

• A transit time measurement system Type

NivuSonic using 2 measurement paths has been

used.

• The sensors have been installed in a measuring

pipe with integrated ball valves. This allows to

replace sensors under process conditions at any

time.

• Crosswise path arrangement virtually eliminates

crossflow during calculation.

Advantages:

• Easy and robust installation using calibrated pipe

segment

• No bypass required

• High accuracy and reproducibility

Application

Kla

era

nla

ge-A

B-N

IM-1

-EN

/ 2

7.0

4.2

009




34

Definition of Task

Solution


• Part filled

• Channel walls and bottom made of concrete

• Upgrading an existing Venturi flume with a

measurement system

• Detection of wastewater treatment plant discharge using existing Venturi flume

• Output of flow volume to control system

• Output of volume-proportional m³-impulses for on-site counter

• A Q/h related ultrasonic volume

measurement Type NivuMaster has

been installed.

• In order to maintain the measuring

uncertainty as low as possible, an

ultrasonic sensor with a very low dead

zone (Type P-M3, dead zone 0.07m)

has been selected to detect

impoundage level.

• All signals requested by the customer

are transmitted from the transmitter to

the control system and the on-site

counter.

• The sensor has been installed above

the Venturi flume by using a standard

wall installation angle.

Flow Measurement In Flow Measurement In VenturiVenturi FlumeFlume

Application

Kla

era

nla

ge-A

B-N

M-1

-EN

/ 1

4.0

3.2

009




VenturiVenturi flume measurement in dischargeflume measurement in discharge

Schematic diagram of Schematic diagram of VenturiVenturi flumeflume

and correct sensor positionand correct sensor position

35

Definition of Task

Solution


• Part filled


• Only short measuring section available

• Low nightly discharge

• The facility has been previously billed in a lump sum considering inlet volumes. For that

reason the customer necessarily requires a discharge measurement to save costs

• Installation costs and efforts shall be as low as possible

• Low volumes during the night are to be detected accurately and reliably

Flow Measurement Using Impoundage ShieldFlow Measurement Using Impoundage Shield

Discharge pipe with impoundage shieldDischarge pipe with impoundage shield

Application

Kla

era

nla

ge-A

B-O

CF

-1-E

N / 2

7.0

4.2

009




• The discharge pipe into the recipient has been

left unmodified. It now is used as new

measuring section

• To detect even lowest volumes, an

impoundage shield has been installed to

constantly create a minimum water level.

• A flow velocity sensor with integrated pressure

cell for level measurement has been installed

using a pipe mounting system. Readings are

measured with an OCM Pro CF.

Advantages:

• No facility modification required

• Sensor fastening without drilling or similar

• High measuring dynamics between nightly

discharge and rainy weather can be measured

Setup of measuring sectionSetup of measuring section

36


Extraneous Water

Precipitation Discharge Measurement

Hydraulic Inspection

Inspection Of Throttle Equipment page 38

Inspection Of Flow Measuring Equipment page 40

Data Collection During Dry Weather Periods

Including Evaluation Of Extraneous Water page 42

Simultaneous Data Acquisition At 78 Measuring Points page 44

Concentration Of Pollutants

Investigation Of Pollution Loads In A Stormwater Channel page 46

Pollution Load In Overflow Discharge page 48

Flowing Water Discharges

Hydraulic Stress Of Natural Flowing Waters Due To Heavy Rainfall page 50

37

Definition of Task

Implementation

Reference Project

• Metrologic inspection of throttle equipment

according to German self-control ordination

(EKVO)

• Verification of approved pipe volume of Q = 10

l/s (readings must not vary by more than 20 %

from reference value)

• Gathering of information on stormwater tanks and throttle equipment already before

tendering

• Visual inspection of throttle equipment

• Inspection concept considering local conditions

• Definition of measurement points considering accessibility and hydraulic conditions

• Planning of work to be undertaken and selection of measuring equipment

• Assessment of throttle equipment under

operating conditions regarding condition of

throttle equipment, impoundage marks,

hydraulic conditions and similar.

• Check-up of relevant dimensions (heights,

lengths and cross-sectional areas).

• Installation of measuring equipment for

detection of tank filling level and throttle

discharge.

• Provoked impoundage of stormwater tank

by feeding river water.

• Comparative measurement for recording of

discharge curve (characteristic).

• Compilation of inspection documentation.

Mess

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-EN

/ 2

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4.2

009

Inspection Of Throttle EquipmentInspection Of Throttle Equipment



Planning / Conception

StormwaterStormwater overflow tank overflow tank –– main main

collector with mechanically controlled collector with mechanically controlled

throttle valvethrottle valve

Comparative measurement using Comparative measurement using

NIVUS Pipe ProfilerNIVUS Pipe Profiler


38

Data

• Verification of data and plausibility

• Evaluation of discharge curve (characteristic)

• Comparison between characteristic and setpoint

value and calculation of deviation

Data Handover

Chart of inspection result: comparison between throttle dischargChart of inspection result: comparison between throttle discharge and tank level e and tank level

hydrographshydrographs

• Report on implementation of inspection: documentation of all applicable throttle equipment

data as well as inspection methods and inspection results.

• Catalogue of measures regarding upgrading of throttle equipment considering German

ATV-A 111 regulation (an average deviation of > 60 % compared to the setpoint value has

been detected).

• Two copies of inspection certificate.

Overflow channel flowing into receiving Overflow channel flowing into receiving

water (at high watermark)water (at high watermark)

Mess

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-EN

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6.0

3.2

009


Hydraulic InspectionReference Project


Result Of Inspection

0

2

4

6

8

10

12

14

16

18

11:00:00 11:10:00 11:20:00 11:30:00 11:40:00 11:50:00 12:00:00 12:10:00

Time [hh:mm:ss]

Th

rott

le d

isc

ha

rge

[l/

s]

53,0

53,5

54,0

54,5

55,0

55,5

Wa

ter

leve

l in

ta

nk

[m

NN

]

Throttle discharge Water level in tank

Q_target = 10 l/s (+/- 20 %)

W_max = 55,10 mNN

39

Definition of Task

• Metrologic inspection of flow measuring

equipment according to German self-control

ordination (EKVO)

• Inspection of flow measurement at relevant

discharge point according to German regulations

• Gathering of information on flow measuring equipment prior to tendering

• Visual inspection of flow measuring equipment

• Inspection concept considering local conditions

• Definition of measurement points considering accessibility and hydraulic conditions

• Planning of work to be undertaken, selection of measuring systems and securing of

stationary conditions

• Assessment of flow measurement place

under operating conditions regarding

hydraulic conditions and measurement

range.

• Check-up of relevant dimensions.

• Inspection of transmission and recording of

readings.

• Installation of comparative measurement

system for flow verification.

• Comparative measurement utilising various

operating conditions in order to detect the

relative deviation.

• Documentation of inspection.

Mess

kam

pagnen-H

P-2

-EN

/ 27.0

4.2

009

Inspection Of Flow Measuring EquipmentInspection Of Flow Measuring Equipment


Flow measurement at relevant Flow measurement at relevant

discharge point (diameter 0.3 m, discharge point (diameter 0.3 m,

bottombottom--based velocity sensor)based velocity sensor)

Installed comparative measurement system: Installed comparative measurement system:

NIVUS Pipe Profiler (NPP)NIVUS Pipe Profiler (NPP)


Reference Project

Implementation



40

Data

Correlation of discharges from both Correlation of discharges from both

measurement pointsmeasurement points

Data Handover

Chart of inspection result: relative deviation from check value Chart of inspection result: relative deviation from check value of comparative of comparative

measurementmeasurement

• Report on implementation of inspection: documentation of all applicable flow measuring

equipment data as well as inspection methods and inspection results.

• Result: the relative deviation from check values of verified flow areas is within the limits of

permissible errors.

• Two copies of inspection certificate.


• Evaluation of discharge hydrograph during

control measuring period

• Investigation of relative and absolute deviation

from verification value

Mess

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-EN

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009


Reference ProjectMeasurement Campaigns


Correlation Of Discharges

0

10

20

30

40

50

0 10 20 30 40 50

Relevant measurement point [l/s]

Co

mp

ara

tive

mea

su

rem

en

t [l

/s]

Result Of Comparative Measurement

-15%

-10%

-5%

0%

5%

10%

15%

0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0

Comparative measurement/Q_max [-]

((re

leva

nt

me

as

ure

me

nt

po

int)

-(c

om

pa

rati

ve

me

as

ure

me

nt)

)/(c

om

pa

rati

ve

me

as

ure

me

nt)

[%

]

Deviation of relevant measurement point

Error limit (according to German self-control ordination)

41

Definition of Task

• Set-up of 9 measurement places for a

measurement period of 4 weeks

• Investigation of extraneous water loads in parts

of the channel network catchment area

• Implementation of campaign at short notice in

order to combine road works with sewer

rehabilitation measures

• Installation, commissioning and test run of

measurement system with subsequent fine-

tuning.

• Periodic verification of measurement

system and measurement points on site

• Provision of information on progress of

measurement campaign (precipitation

intensity, discharge data and more)

• Removal of measurement system after

customer approval

Mess

kam

pagnen-F

W-1

-EN

/ 26.0

3. 2009

Data Collection During Dry Weather Periods Including Data Collection During Dry Weather Periods Including

Evaluation Of Extraneous WaterEvaluation Of Extraneous Water

• Specified planning of measurement place based on channel layout

• Site inspection in close coordination with customer

• Assessment of measurement place regarding hydraulic conditions and accessibility

• Determination of measurement points and selection of accompanying measurement system

• Quick and simple arrangement of dates with customer

Installation of measurement systemInstallation of measurement system

Ingress of extraneous waterIngress of extraneous waterPlanning / Conception



Extraneous Water

Implementation

42

Data

• Backup of raw data in data bank

• Verification of data and plausibility (software:

WISKI, Kisters AG)

• Evaluation of extraneous water (software:

MANAti, bks HTV GmbH) and representation of

methods to separate dirty water and extraneous

water from dry weather discharge

Data Handover

• Complete documentation on measurement place.

• Handover of measurement data in desired format (*.txt and *.xls).

• Separate handover of results of extraneous water analysis.

• Creation and handover of CD containing clear visual representation of all measurement

results (daily and weekly charts) including all relevant project information after project has

been finished.

Data evaluationData evaluation

Visual representation of measurement results as weekly chartVisual representation of measurement results as weekly chart

Mess

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W-1

-EN

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3. 2009



Extraneous Water

43

Definition of Task

• Set-up of 78 measurement places for a

measurement period of 4 months

• Implementation of precipitation discharge

measurement for revision of sewer system

masterplan

• Creating a basis for channel network control

• Utilisation of measurement data for extraneous

water analysis

• Determination of measurement points in channel network considering customer-related

catchment areas

• Preliminary site inspection: test for measurement suitability, selection of measurement

systems and sensors

• Compilation of schedule for set-up and commissioning of 73 flow and level measurement

points as well as 5 precipitation loggers within one week

• Installation of measurement systems and

commissioning of all measurement points

within 5 working days.

• Maintenance of measurement points every

14 days (data backup, battery replacement,

visual inspection, functional test and sensor

cleaning if necessary).

• After achieving the measuring target and

final approval by customer: sensor removal.

Mess

kam

pagnen-N

S-1

-EN

/ 2

7.0

3. 2009

Simultaneous Data Acquisition At 78 Measuring PointsSimultaneous Data Acquisition At 78 Measuring Points




Channel layoutChannel layout

Flow measurement place: sensors for flow Flow measurement place: sensors for flow

velocity and level measurementvelocity and level measurement


Reference Project

Implementation

44

Data

• Import of raw data into data bank for permanent

availability (software: WISKI, Kisters AG)

• Continuous verification of data and plausibility

• Accompanying provision of measurement data

for customer

Data and plausibility verificationData and plausibility verification



Data Handover

• Detailed documentation on measurement points.

• Handover of measurement data in required format (*.txt as well as *.xls).

• Representation of all measurement data as daily and weekly hydrographs (*.pdf).

• Project CD: containing clear visual representation of all measurement results including all

relevant project information after project has been finished.

Graphic representation of overflow event on Graphic representation of overflow event on stormwaterstormwater overflowoverflow

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7.0

3. 2009


Reference Project

45

Definition of Task

• Continuous investigation of flow and substance

concentrations in stormwater channel over a

period of 10 months

• Data to be available online and immediate

notification of customer in case of rainfall events

• Parameters to detect: h [m]; v [m/s]; Q [l/s]; T

[C°]; C_CSBeq [mg/l]; C_CSBfeq [mg/l] and

C_AFSeq [mg/l] as well as precipitation hN [mm],

air temperature [C°] and sampler signals (on/off

points, bottle changeover)

• Installation of metering cabinet as well as

installation and commissioning of sensors

within one day.

• Monthly maintenance on site, inspection of

measurement system.

• Regular creation of backups and screening

of readings via data telecommunication

• Instantaneous verification of data after

receiving event messages (per SMS).

• Set-up of remote data access for customer

to ensure immediate access to current

readings at any time.

Longitudinal section of Longitudinal section of stormwaterstormwater

channel with 2 m diameterchannel with 2 m diameter

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009

Investigation Of Pollution Loads In A Investigation Of Pollution Loads In A

StormwaterStormwater ChannelChannel



• Specified planning of project considering all relevant conditions

• Preliminary site inspection involving all participants and discussion on possible solutions

• Organisation of working procedures involving all participants to ensure smooth processes

• Set-up of message system (SMS) for automatic and immediate notification of customer at

the beginning of precipitation events

• Realisation of requirements using a pre-configured metering cabinet

OnlineOnline--spectrometer probespectrometer probe

Top left: metering cabinetTop left: metering cabinet



Reference Project

Implementation

46

Data


• Verification of data and plausibility (software:

WISKI, Kisters AG)

• Data evaluation at short notice as required by

customer

Verification of dataVerification of data

Data Handover

• Complete documentation on measurement place.

• Handover of measurement data in desired format (*.txt and *.xls).

• Project CD: containing clear visual representation of all data (daily and weekly charts)

including all relevant information without the need for additional software.

• Saves time during further data processing thanks to clear representation of measurement

results.

Visual representation of measurement results as daily chartVisual representation of measurement results as daily chart

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-EN

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3.2

009




47

Definition of Task

• Continuous detection of flow and substance

concentrations in a wastewater treatment plant

and at three points within the channel network

connected upstream over a period of 15 months

• Investigations proving the equivalence of

different kinds of wastewater disposal

• Preliminary planning based on plans on existing sewer channels in close coordination

with customer

• Preliminary inspection of measurement places, determination of measurement points,

selection of measurement systems

• Planning of implementation: staff roster and schedule, test run of measurement systems

• Set-up of data telecommunication for enhanced data availability

• Installation and commissioning of

measurement system

• Monthly maintenance of measurement

places on site and inspection of

measurement systems

• Regular screening of measurement data via

remote access

• Removal of measurement system after

approval by customer

Mess

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-EN

/ 2

7.0

3.2

009

Pollution Load In Overflow DischargePollution Load In Overflow Discharge

Wastewater treatment plant of Wastewater treatment plant of

catchment areacatchment area

Flow measurement placeFlow measurement place



Reference Project

Implementation



48

Data



• Creation of 5-minute averages derived from

1-minute readings specified by customer

Data Handover

• Creation of data packets on overflow events as specified by customer.

• Output of substance concentrations at overflow constructions including specifications on

over flow duration and overflow levels.

• Data conversion into format required by customer.

• Project CD: graphic representation of measurement data and project conclusion report.

Substance concentration measurement Substance concentration measurement

during overflow eventduring overflow event

Graphic representation of flow and substance concentration at Graphic representation of flow and substance concentration at

overflow construction during combined wastewater overflowoverflow construction during combined wastewater overflow

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009




49

Definition of Task


• Set-up of 28 flow measurement points in order to

create a sewer system masterplan

• Detection of hydraulic stress and substance loads

of flowing waters in case of heavy rainfall events

• Realisation of flow and substance concentration

measurements in the water body

• Specified planning of measurement points on site in close coordination with customer,

based on layouts of individual parts of the drainage area

• Determination of best possible measurement points in the water body and investigation of

channel shapes

• selection of measurement systems and development of special solutions (e.g. flow

measurement using three perpendicular float velocity measurements from top down).

• Set-up of data telecommunication for continuous monitoring of measurement points

• Preparation of the measurement system to

be used considering applicable

requirements of the measurement place.

• Installation and commissioning of the

measurement system including test run.

• Regular maintenance of measurement

places on site, system inspection.

• Regular creation of backups and screening

of readings via data telecommunication.

• Removal of measurement systems after

achieving the measurement target and

approval by customer.

Mess

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-EN

/ 2

7.0

4.2

009

Hydraulic Stress Of Natural Flowing Waters Due To Hydraulic Stress Of Natural Flowing Waters Due To

Heavy RainfallHeavy Rainfall

Preliminary inspection of relevant Preliminary inspection of relevant

sections of water bodysections of water body

Flow measurement point in surface water body: Flow measurement point in surface water body:

sensors have been installed on the underside sensors have been installed on the underside

of the surfboards (floats)of the surfboards (floats)


Reference Project

Implementation



50

Data


(software: WISKI, Kisters AG)


• Evaluation of flow velocity measurement (three

perpendicular measurements for high accuracy)

for investigation of flow at all measuring points

Data Handover

• Complete documentation on measurement place including presentation of all steps required

for flow detection in the water body sections.

• Handover of data in desired format (*.txt and *.xls).

• Handover of project CD with graphic representation of all measurement data (daily and

weekly charts) including project conclusion report.

Schematic diagram of flow measurement, crossSchematic diagram of flow measurement, cross--sectionsection

Sensors installed on bottom of Sensors installed on bottom of

water bodywater body

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51

Flowing Waters

Power Plants

Irrigation Systems

Flow Measurement In Turbine Intake page 54

Cooling Water Flow Measurement In Renaturalised Channel page 55

Flow Measurement In Service Reservoir page 56

53

Flowing Waters

Power Plants

Flie

ssgew

ässe

r-K

W-N

OM

-1-E

N / 2

7.0

4.2

009

Flow Measurement In Turbine IntakeFlow Measurement In Turbine Intake

Definition of Task

Solution


• Part filled

• Concrete walls due to bridge

• Natural bed

• Turbine intake shall be controlled permanently in order to make sure not to unload too much

water from the river.

• This is to ensure not to underload turbines due to low flow volumes but to switch the pumps

off instead.

• A transit time measurement Type NivuChannel has

been used due to water quality and low suspended

solids content.

• A measurement point underneath a bridge has

been selected in order to obtain the best possible

profile shape.

• The natural bed is tending to crossflow effects. Two

measurement paths have been installed crosswise

to compensate these effects.

Advantages:

• Easy and robust installation

• High accuracy

• Reproducibility of readings

• Reliability under all process conditions

Installation of rod sensorsInstallation of rod sensors

Measurement point at bridgeMeasurement point at bridge

Application



54

Definition of Task

Solution

• Trapezoid channel 7 x 1.8 m (w x h)

• Part filled

• Natural bed and bank

• The cooling water volume fed from a power plant into a surface water body is to be

detected.

• The measuring section consists of a renaturalised surface water body.

• Sensors shall be installed safely and have to be accessible at any time.

• The sensors of the measurement system Type

OCM Pro have been fastened on a movable

carriage. The carriage has been put on two rails

reaching into the water body.

• The level is detected with a sensor-integrated

hydrostatic measuring element.

Advantages:

• A robust and accurate measurement has been

installed without the need for comprehensive

reconstruction measures. Furthermore the

measurement can be accessed for

maintenance purposes at any time.Carriage with installed sensors Carriage with installed sensors

Cooling Water Flow Measurement In Cooling Water Flow Measurement In

RenaturalisedRenaturalised ChannelChannel

Application

Flie

ßgew

aesse

r-K

W-O

CP

-1-E

N / 2

7.0

4.2

009

Measurement placeMeasurement place

Flowing Waters

Power PlantsReference Application


55

Definition of Task

Solution

• Special profile, approx. 2.5 x 2.0 m (h x w)

• Part filled

• Channels made of natural stone and concrete

• High flow dynamics

• The inflow of a storage lake is to be detected in order to control volumes and to handle

water management.

• Flow measurement for feeding river water into the storage lake has to be able to reliably

ensure measurement dynamics from low volumes up to a maximum of 2000 l/s.

• A flow measurement system Type OCM Pro has

been used. The level is detected by a separate

compact echo sounder.

• The sensor has been installed on a stainless

steel plate to prevent the sensor from

obstruction and to avoid vorticity on the channel

bottom.

Advantages:

• The transmitter allows to easily set the required

parameters for the existing special profile.

• The selected sensors meet the requirements of

the extreme flow dynamics of the measurement

point.

Storage lakeStorage lake

Measurement point in conveyance culvert Measurement point in conveyance culvert

Flow Measurement In Service ReservoirFlow Measurement In Service Reservoir

Flowing Waters

Irrigation Systems

Application

Flie

ßgew

aesse

r-B

S-O

CP

-1-E

N / 2

7.0

4.2

009



56

Food Industry

Chemical Industry

Industry

Flow Measurement In Cooling Water Tap page 58

Flow And Analysis Measurement page 59

57

Definition of Task

Solution

• Flow within the cooling water channel has to be controlled permanently to ensure cooling process

as well as pump control.

• Inflow has to be controlled due to limited volumes of the following grit separators.

• Flow shall be detected continuously even in case of fluctuating water levels.

Installation of sensors in channelInstallation of sensors in channel

Industry

Chemical Industry

Completed installationCompleted installation

Flow Measurement In Cooling Water TapFlow Measurement In Cooling Water Tap

• A transit time measurement Type NivuChannel

has been used due to the clean medium.

• Rod sensors have been used, allowing to select

holders which enable sensor removal from the

outside under operating conditions. The sensor

holders have been installed in the top area since

the water level cannot be lowered for a longer

period. This allows to remove the sensors from

above for maintenance purposes.

Advantages:

• Easy and robust installation

• Sensors can be removed or maintained under

operating conditions

• High-accurate flow detection

Application

• Closed rectangular channel,

3.8 x 3.5 m (h x w)

• Part filled

• Walls and bottom made of concrete

Indust

rie-C

hem

ie-N

OM

-1-E

N / 0

5.1

2.2

008



58

Definition of Task

Solution


• Part filled

• Pipe made of HDPE

• Shift production

• Heavy flow fluctuation

• Low sedimentation

• The discharge from an industrial plant to a municipal channel is to be equipped with a

measurement point due to monitoring and billing purposes. Volume measurement, pH

measurement as well as a sampling point have to be integrated.

• Due to extreme flow dynamics even lowest volumes have to be detected accurately.

• The existing shaft shall be used for installation and control as well as maintenance works

shall be carried out by one single person.

• Using the NIVUS Pipe Profiler (NPP) creates a

high-accurate flow measurement which

furthermore is able to reliably detect and to

compensate sedimentation and obstructions.

• pH sensor and sampling point have been

integrated into the measurement pipe.

• The elbow segment of the measurement pipe

may be folded away for cleaning purposes.

Advantages:

• Cost-effective measurement from the top of the

manhole.

NPP in operationNPP in operation

Schematic diagram of NPP including Schematic diagram of NPP including

sampling and pH sensorsampling and pH sensor

Flow And Analysis MeasurementFlow And Analysis Measurement

Industry

Food Industry

Application

Indust

rie-L

M-N

PP

-1-E

N / 2

7.0

4.2

009



59

Specific

ations s

ubje

ct

to c

hange.

09.0

9.2009

NIVUS GmbH NIVUSAG NIVUS Sp. z o.o. NIVUS FranceIm Taele 275031 Eppingen, GermanyPhone: +49 (0) 72 62 / 91 91 - 0Fax: +49 (0) 72 62 / 91 91 - 999E-mail: [email protected]: www.nivus.com

Hauptstrasse 498750 Glarus, SwitzerlandPhone: +41 (0) 55 / 645 20 66Fax: +41 (0) 55 / 645 20 14E-mail: [email protected]: www.nivus.com

Phone: +48 (0) 58 / 760 20 15Fax: +48 (0) 58 / 760 20 14E-mail: [email protected]: www.nivus.pl

Phone: +33 (0) 3 88 07 16 96Fax: +33 (0) 3 88 07 16 97E-mail: [email protected]: www.nivus.com

ul. Hutnicza 3 / B-1881-212 Gdynia, Poland

14, rue de la Paix67770 Sessenheim, France

P.O. Box 342, Egerton, BoltonLancs. BL7 9WD, U.K.Phone: +44 (0) 1204 591559Fax: +44 (0) 1204 592686E-mail: [email protected]: www.nivus.com

NIVUS U.K.

Applications & Solutions - Eijkelkamp€¢Compliance with accuracies required according to ATV-DVWK...

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Transcript of Applications & Solutions - Eijkelkamp€¢Compliance with accuracies required according to ATV-DVWK...