300 RANGE

EEXXPPLLOOSSIIMMEETTRRIICC DDEETTEECCTTOORR DDEETTEECCTTOORR--TTRRAANNSSMMIITTTTEERR

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OPERATING AND MAINTENANCE

Ref.: CD00004 Code: 06_MT_ CEX8CTX300_GB_24_11_06

3

GAS DETECTION

We are delighted that you have chosen an ISC/OLDHAM instrument and would like to thank you for your choice. We have taken all the necessary measures to ensure that your instrument provides total satisfaction. Now it is important to read this document carefully.

EE XX TT EE NN TT OO FF RR EE SS PP OO NN SS II BB II LL II TT YY * ISC/OLDHAM declines its responsibility towards any person for material damage, physical injury or death

resulting wholly or partly from inappropriate use, installation or storage of its equipment resulting from failure to observe instructions and warnings and/or standards and regulations in force.

* ISC/OLDHAM neither supports nor authorises any company, physical or moral person to assume responsibility on

behalf of ISC/OLDHAM , even if it is involved in the sale of ISC/OLDHAM products. * ISC/OLDHAM cannot be held responsible for direct or indirect damage or be required to pay direct or indirect

compensation resulting from the sale or use of any of its products IF THESE PRODUCTS HAVE NOT BEEN DEFINED AND CHOSEN BY ISC/OLDHAM FOR THEIR SPECIFIC USE.

CC LL AA UU SS EE SS CC OO NN CC EE RR NN II NN GG PP RR OO PP EE RR TT YY * Drawings, plans, specifications and information included in this document contain confidential information that is

the property of ISC/OLDHAM * None of this information may be reproduced, copied, divulged or translated, by physical, electronic or any other

means, nor used as the basis for the manufacture or sale of ISC/OLDHAM equipment or for any other reasons without prior consent from ISC/OLDHAM

WW AA RR NN II NN GG SS * This document is not contractually binding. In the interests of its customers, ISC/OLDHAM reserves to modify the

technical specifications of its equipment without notice, in order to improve its performance. * READ THIS MANUAL CAREFULLY BEFORE FIRST USE OF THE EQUIPMENT: this manual must be

read by any person who is or will be responsible for using, maintaining or repairing this equipment. * This equipment will only provide the announced performance levels if it is used, maintained and repaired

according to ISC/OLDHAM directives, by ISC/OLDHAM personnel or by personnel approved by ISC/OLDHAM

GG UU AA RR AA NN TT EE EE 2 years guarantee in normal conditions of use on parts and technical labour, return in our workshops, excluding consumables (sensors, filters, etc.)

4

CONTENTS

I. DESCRIPTION............................................................................................ 6

1. GENERAL.................................................................................................................................. 6

2. COMPOSITION OF SERIES 300: GENERAL POINTS ........................................................... 6

II. INSTALLATION AND CONNECTIONS .................................................... 7

1. INSTALLATION OF DETECTORS ........................................................................................... 7 1.1 General information ................................................................................................................7 1.2 Mechanical installa tion............................................................................................................8

2. ELECTRICAL CONNECTIONS ................................................................................................ 9 2.1 Wiring specifications (Earthing) ..............................................................................................9 2.2 Cable glands and types of cable ...............................................................................................9 2.3 Connections for various types of detector .................................................................................9 2.4 Operating procedure for wiring..............................................................................................15

III. SWITCHING ON AND UTILIZATION...................................................... 16

1. SWITCHING ON...................................................................................................................... 16

2. OUTPUT 4/20 MA OF SERIES CTX 300................................................................................ 17

IV. MAINTENANCE........................................................................................ 17

1. Calibration ............................................................................................................................... 18 1.1 Recommendations.................................................................................................................18 1.2 Calibrating the CEX 300 .......................................................................................................19 1.3 Calibrating the CTX 300 .......................................................................................................20 1.4 Calibrating the CTX 300, OXYGEN type ...............................................................................23 1.5 Calibrating the CTX 300 SC (semiconductor type) (without display panel or diodes) ................24

2. REPLACING A CELL.............................................................................................................. 27

3. Scrapping of CEX/CTX 300..................................................................................................... 27

4. SPARE PARTS LIST ................................................................................................................ 27 4.1 EXPLO detector, type CEX 300.............................................................................................27 4.2 Toxic gas or oxygen detector CTX 300 ..................................................................................29 4.3 30 4.3 Semiconductor type detector CTX 300 SC..............................................................................31 4.4 Vehicle park CO detector CTX 300........................................................................................32

V. CEX300 IS EXPLOSIMETRIC DETECTOR............................................ 33

1. Introduction.............................................................................................................................. 33

2. Composition ............................................................................................................................. 33

3. Wiring....................................................................................................................................... 33

4. Calibration ............................................................................................................................... 34

5. Replacing the cell..................................................................................................................... 34

5

VI. SPECIAL SPECIFICATIONS FOR USE IN POTENT IALLY EXPLOSIVE ATMOSPHERES IN ACCORDANCE WITH EUROPEAN DIRECTIVE ATEX 94/9/EC........................................................................................... 35

1. Specifications for mechanical and electrical installation in Classified Areas. ....................... 35 1.1 Explosion-proof detector (d) and enlarged safety (e) detector: CEX300....................................35 1.2 Intrinsic safety detectors (i) CEX300 SI..................................................................................35

2. Metrological specifications for CEX300 explosive gas detector............................................. 36 2.1 Technical Specifications and Special Instructions for CEX300 explosive gas detector ...............36

3. . MARKINGS............................................................................................................................ 38 3.1 CEX300 detector ..................................................................................................................38 3.2 CEX300 IS detector ..............................................................................................................38

APPENDIX 1..................................................................................................... 42

APPENDIX 2..................................................................................................... 47

APPENDIX 3..................................................................................................... 48

6

I. DESCRIPTION

1. GENERAL Gas detectors in series 300 are intended for the measurement of levels of toxic and combustible gases and vapours, and of oxygen. They can be used in atmospheres with increasingly severe constraints thanks to the use of robust materials, suitable design and accessory equipment, stainless steel attaching hardware and a corrosion-resistant polyamide housing (IP66). The detectors in series 300 comprise the following items, according to their type and the options selected: • a polyamide housing1 containing an electronic circuit and a display device showing gas concentrations and failures,

• a gas measuring cell (which may be calibrated), • one or two cable inlet glands of various types.

Series 300 can be supplied with a wide range of options and suitable accessory equipment. 2. COMPOSITION OF SERIES 300: GENERAL POINTS

CTX 300 Type of detector CEX 3002

Toxic gas Oxygen Semiconductor

type Vehicle park

CO Gases detected

Combustible gases The principal toxic gases are detected.

Oxygen - Combustible gases - Solvents - Certain freons

Vehicle park CO

Detection principle

Based on catalytic oxidation and featuring a cell equipped with two platinum filaments included in a Wheatstone bridge

Electrochemical cells 3 supplying a current proportional to the concentration of toxic gas in the air

Electrochemical cells supplying a current proportional to the concentration of oxygen in the air

Cell with semiconductor (various types) Measurement relies on variations in electrical conductivity induced by absorption of gas on the surface of a metal oxide

Electrochemical cell supply a current proportional to the concentration of CO in the air

Type of cell unit

Explosion-proof cell equipped with a choice of different types of filaments (explo., antipoison, catharometric, NH3, etc.)

Removable cell unit, precalibrated for a specific gas4.

Precalibrated, removable cell unit: scale of 0 to 30% or 0 to 100% by volume

Removable cell unit, not precalibrated

Removable cell unit, not precalibrated

Options - remote cell (30m) - Cable gland for shielded or unshielded cable or for armoured cable45

- Mines application: CEX300 IS intrinsic safety detector

With or without display panel and LED - remote cell (10m)

- With or without display panel and LED Special precalibrated, removable O2 cell: scale of 0 to 100% by volume - remote cell (10m) with or without displaiy panel and LED

Various types of semiconductors

Possibility of 2 cable glands (several detectors in loop configuration)

Certification

EEx e d IIC T5/T6

No

No

No

No

1 Housing with certification EEx e d IIC T5/T6 (CEX300 SI : EEx ia IIC T4 / EEx ia I ) 2 ATEX CERTIFICATION of the CEX300 : INERIS 01 ATEX 0006X 3 Specific to each gas 4 Detection of a number of toxic gases Choice between several scales 5 In this case, earthing is mandatory.

7

II. INSTALLATION AND CONNECTIONS Please ensure you read the paragraph: Special Specifications for use in Potentially Explosive Atmospheres in Accordance with European Directive ATEX 94/9/EC

1. INSTALLATION OF DETECTORS

1.1 General information The measuring cell must be installed face downwards. The detector must be positioned according to the type of gas to be detected: • at a high point if the gas is lighter than air, • at a low point if the gas is heavier than air, • near extraction vents if there is a mechanical ventilating system, • and, in general, in locations where the gas is likely to accumulate. - In spite of its high level of protection (IP66), it may be necessary, in some cases, to protect the detector against adverse weather conditions (such as rain, dust, direct sunlight) or direct splashing with maintenance or cleaning products (which may lead to soiling of the detection cell). - The detector must also be positioned so as to allow access to the measuring cell for replacement, when required. - The detectors must be positioned so as to ensure optimal detection of accumulations of gas in the air.

Factors to be considered when determining the optimal location of the detector:

⇒ Potential sources of vapour and gas emissions ⇒ Chemical and physical data on potential gases and vapours present ⇒ Liquids with low volatility ⇒ Detectors as near as possible to location of leak hazard ⇒ Nature and concentration of gas leaks (high-pressure jet, slow leak, etc.) ⇒ Air movements - Indoors: natural and mechanical ventilation - Outdoors: wind speed and direction ⇒ Effect of temperature ⇒ Detectors to be installed so as to avoid mechanical damage or damage by water during the summer ⇒ Detectors to be positioned so as to allow easy maintenance, if possible ⇒ Installation avoid ing direct sunlight on the display panel as this would cause maintenance problems

8

1.2 Mechanical installation Case No. 1: Mounted directly on a wall and in accordance with the drilling layout below.

Case No. 2: Mounted on ceiling by means of a bracket (supplied as accessory). In this case, the detector is attached to the bracket as shown below and the bracket is mounted on the ceiling in accordance with the same drilling layout as that shown above.

ITEM Qty DESCRIPTION DWG No. OFSA REF. MATERIAL 1 1 BRACKET CEX / CT 300 48064G2 6132380 STAINLESS STEEL 2 4 SCREW CHC L12 . 6902218 STAINLESS STEEL 3 4 WASHER A25 ACCD . 6905518 .

1 3 2

90 BETWEEN CENTRES

90 BETWEEN CENTRES

90 B

ET

WE

EN

CE

NT

RE

S

9

2. ELECTRICAL CONNECTIONS

2.1 Wiring specifications (Earthing) If necessary: See the earthing specifications for ISC/OLDHAM appliances and the corresponding connection equipment in Appendix 1.

2.2 Cable glands and types of cable

Type of detector Type of cable gland Cable inlet

CTX 300 (TOX and OX) CTX 300 SC CTX 300 vehicle park CO

Plastic PG9

Between 6 and 11 mm

CEX 300 with shielded cable

Metal "a"

Between 6 and 11 mm

CEX 300 with armoured cable56

Metal "a" with double armour

Between 8.5 and 16 mm

2.3 Connections for various types of detector The detectors in series 300 are of the 3-wire or 2-wire type depending on the versions.

Name CEX 300 CTX 300

(TOX and OX) with display panel

CTX 300 (TOX and OX) without display

panel

CTX 300 SC CTX 300

vehicle park CO

Type Explosibles gases (catalitic sensor)

(filaments) 4/20 mA 4/20 mA 4/20 mA 4/20 mA

Number of wires

3 wires 3 wires 2 wires 3 wires 2 wires

Max. line impedance

(Z) See the characteristics of the data logger used.

6 In this case, the CEX 300 housing is equipped with an earth connection screw to connect the cable armour to the earth.

10

a) Case of connection of a 3-wire detector to an ISC/OLDHAM data logger - 1 wire (+) DC power → No. 3 - 1 wire (-) DC power (0 V earth connection) → No. 2 - 1 signal output wire 4/20 mA → No. 1

b) Case of connection of a 2-wire detector to an ISC/OLDHAM data logger - 1 wire (+) → No.3 - 1 signal wire → No.1

c) Case of connection of a 3-wire 4/20 mA detector to a measurement data logger other than ISC/OLDHAM and with internal power supply: Remark: The data logger must provide a continuous stabilized power supply between 15 V DC and 32 V DC and must be capable of providing a maximum current of 120 mA. (1) Max. load resistance = 200 Ω .

Constituting the 4/20 mA current loop on 2 wires

ISC/OLDHAM DETECTOR Series 300, 2-wire type (CTX300 without display and CTX300 CO parking)

1

2

3 Terminal block of ISC/OLDHAM measurement 1

2

3

1

2

3

ISC/OLDHAM DETECTOR The detectors of the Series 300, 3-wire type : (CEX300, CTX300 with display and CTX300 SC) 1

2

3 Terminal block of ISC/OLDHAM measurement

Shunt (1)

(signal) 1

(-) 2

(+) 3

PWR

1

2

3

ISC/OLDHAM DETECTOR

(+)

(-)

"Other" measurement data logger

Signal

11

d) Case of connection of a 3-wire 4/20 mA detector to a data logger of a type other than ISC/OLDHAM or WITHOUT internal power supply Remark: In this case, the external power supply must provide a voltage of between 15 V DC and 32 V DC must be capable of providing a maximum current of 120 mA. (1) Max. load resistance = 200 Ω

e) Case of connection of a 2-wire 4/20 mA detector to a data logger of a type other than ISC/OLDHAM with internal power supply (1) Max. current supplied = < 30 mA

f) Case of connection of a 2-wire 4/20 mA detector to a data logger of a type other than ISC/OLDHAM and WITHOUT internal power supply

(1) Max. current defined = < 30 mA

(+)

shunt

S

(1)

(-) "Other" measurement data logger

External power - +

1

2

3

← 4/20 mA

(-)

(signal)

ISC/OLDHAM 3-wire detector, series 300,

(+)

(1) (signal)

(+)

← 4/20 mA signal

PWR 1

2

3

shunt

"Other" measurement data logger

ISC/OLDHAM 2-wire detector, series 300,

(signal)

(+)

(1) EXTERNAL PWR SUPPLY

(-) (+)

shunt

1

2

3 ISC/OLDHAM 2-wire detector, series 300,

"Other" measurement data logger

12

g) Special case of connection of a 2-wire 4/20 mA detector (without display panel) of vehicle park CO type to an ISC/OLDHAM measurement data logger

h) Special case of connection of a 2-wire 4/20 mA detector (without display panel) of vehicle park CO type to a measurement data logger other than ISC/OLDHAM and WITH internal power supply (1) Max. current supplied = <30 mA

Max. current supplied =< 150 mA for 5 detectors maximum (See next paragraph: K)

j) Special case of connection of a 2-wire 4/20 mA detector (without display panel) of vehicle park CO type to a measurement data logger other than ISC/OLDHAM and WITHOUT internal power supply (1) Max. current supplied =< 30 mA for a single detector

Max. current supplied =< 150 mA for 5 detectors maximum (See next paragraph: K)

(S)

(+)

1

2

3 ISC/OLDHAM detector, series 300, vehicle park CO type

Measurement data logger

I

V+

I

V+

(1)

← 4/20 mA

(+)

I

V+

I

V+

ISC/OLDHAM detector, series 300, vehicle park CO type»

PWR

Measurement data logger

shunt

I

V+

I

V+

ISC/OLDHAM detector, series 300, vehicle park CO type

(1) EXTERNAL PWR SUPPLY

(-) (+)

shunt

Measurement data logger

13

k) Special case of connection of several detectors CTX 300, vehicle park CO type, onto a single loop and connected to a single data logger

In this case a maximum of five vehicle park CO type detectors can be connected, as specified below. Remarks: s This type of wiring is permitted on condition that the detectors are located in the

same room. s The data logger measuring channel will then show the mean value of the signals from the various detectors.

l) Two EXPLO detectors, CEX 300, on a single measuring channel

(1) and (2): The bridge that connects wires 1 and 4 (terminals) must be broken on the detector connector.

signal

(+)

Measurement data logger

1

2

3

CT 300 Vehicle park CO

à etc. up to 5 max.

V+ I V+ I V+ I V+ I V+ I V + I

4-wire cable

(2)

3-wire cable

Measurement data logger

1

2

3

1

2

3

1 2 3 4

4 3 2 1

1

2

3

4

1

2

3

4

Cell 2

Detector CEX 300, No. 1

Detector CEX 300, No. 2

Interconnection box

(1)

Cell 1

14

It is possible to connect a maximum of two EXPLO detectors of type CEX 300 to a single measuring channel of the data logger, provided that both detectors are in the same room. For this application, an interconnection box (manufactured by ISC/OLDHAM) must be used and the wiring must be carried out as shown above. In this case, the measuring channel will display the sum of the signals from both CEX 300 detectors.

IMPORTANT: In accordance with EUROPEAN DIRECTIVE CEM89/336/CEE, ISC/OLDHAM has tested the equipment in compliance with standards EN50081 and 50082.

m) Remote cell As specified in Chapter I, paragraph 2 (on the composition of series 300), some detectors can be equipped with a remote cell. In this case, the remote cell must be wired in place of the integrated cell (connector on circuit) and via a second cable gland.

Remote detector

Optional display panel

To measurement data logger

Connector for integrated or remote unit

Integrated cell unit

OR

15

INSIDE VIEW OF “SERIES 300“ DETECTOR

2.4 Operating procedure for wiring - Connection of measuring cable - Remove the four screws (item 1, Fig. 1). - Remove the cover (item 2, Fig. 1)

To measurement data logger

Integrated cell unit

FIGURE 1

Item 2

Item 1

16

- Loosen the screw (item 3, Fig. 2) without removing it, so that it acts as an axis of rotation. - Completely unscrew the captive screw (item 4, Fig. 2). - Rotate the display panel circuit as shown below (Fig. 3, item 5). - Connect the cable (see 2-3: connection of the various detectors) to the connector (Fig. 3, item 6). - Reinstall the display panel circuit and the cover.

III. SWITCHING ON AND UTILIZATION

1. SWITCHING ON After installation and the making of connections, the detector is started up as soon as the electric power installation is connected, the measurement is energized and the corresponding measuring channel is switched on. If the detector is equipped with a display panel for CTX versions, a green diode (LED) is illuminated (item 1) and the display panel (item 2) displays the concentration of gas.

Item 2

Item 1

FIGURE 2

Item 3 Item 4

FIGURE 3

Item 5

Item 6

17

Check that the maintenance switch (item 1) located on the main circuit is set to the “MES” position (measurement).

2. OUTPUT 4/20 MA OF SERIES CTX 300 For detectors equipped with an electronic system, the 4/20 mA current output will be proportional to the measurement. The current output can be in various states, as follows: • ≤ 1 mA; negative values in case of fault, • = 2 mA in “calibration” position • 4 mA for display of zero, • up to 20 mA for measurement scale, • ≤ 27 mA in case of high values (scale exceeded) Remark: After switching on, it is advisable to check the calibration of the detector if it is not equipped with a precalibrated unit (series CEX 300).

IV. MAINTENANCE

Caution: The adjustments described in this section are to be carried out by authorized, trained personnel only as they can affect the safety of detection.

CAL

Item 1

Item 1

CTX 300 CIRCUIT

MES

MES

CTX 300 CIRCUIT

18

Gas detection instruments are potential life-saving devices. Recognizing this fact, Industrial Scientific Corporation recommends that a functional “bump” test be performed on every fixed gas-monitoring instruments as part of a regular maintenance program. A functional test is defined as a brief exposure of the detector to a concentration of gas(es) in excess of the lowest alarm set-point for each sensor for the purpose of verifying sensor and alarm operation and is not intended to be a measure of the accuracy of the instrument. Industrial scientific further recommends that a full instrument calibration be performed using a certified concentration(s) of calibration gas(es) quarterly, every 3 months.* Calibrations may be necessary more or less frequently based, for example, on application, field conditions, exposure to gas, sensor technology, and environmental conditions. The frequency of calibration is best determined by company policy or local regulatory agencies. If an instrument fails to operate properly during any functional “bump” test, a full instrument calibration should be performed successfully prior to use. These recommendations are based on safe work procedures, industry best practises, and regulatory standards to ensure worker safety. Industrial scientific is not responsible for setting safety practices and policies. * For new installations it may be prudent to carry out bump tests frequently at first (perhaps weekly), increasing the time intervals (to, perhaps, monthly or more) as confidence grows with experience in the installation concerned, on the basis of the maintenance record.

1. Calibration

1.1 Recommendations Calibration consists in adjustments of the detector zero in pure air and of its sensitivity to a reference gas. The adjustments are performed on the detector or on the measurement data logger (CEX 300), (according to the types and the area). For adjustments (ZERO and SENSITIVITY) on the data logger, see the data logger manual, when required. The following equipment is necessary to calibrate the detector correctly:

- plastic hose to make all the connections (item 1), - pressure gauge - pressure regulating valve for compressed gas cylinders (150 bars), (item 2), - flowmeter, 0 to 60 l/h (item 3), - calibrating pipe (item 4), - a cylinder of reference gas (item 5).

Item 1

Item 4

Item 5

Item 3 Item 2

19

The zero adjustment must be performed in air free of gas or, if this is not the case, using a cylinder of clean air, in which case the air must be injected at a flow rate of 60 l/h (checked by a flowmeter). For the adjustment of sensitivity, a commercially available cylinder of reference gas must be used (with a concentration close to the alarm threshold in 21% of oxygen in air or representing at least 30% of the measuring scale). Remark: In the case of certain hazardous gases or gases that are difficult to calibrate, it is MANDATORY that the work must be carried out by a specialized technician from an ISC/OLDHAM branch. Otherwise, another factory precalibrated unit must be used (series CTX). Note : It is important to calibrate the detector with the specified flow rate. This flow rate provides a measurement identical to the gas concentration which will be measured in actual detector operating conditions. If the flow rate of calibrating gas is too high, the actual concentration is under estimated.

1.2 Calibrating the CEX 300 As the CEX 300 essentially consists of a filament type cell and with no electronic circuit, the signal (in mV) is transmitted directly to the measurement data logger. The adjustments are thus made directly on the relevant channel of the data logger. The data logger manual should therefore be consulted.

MEASURING DATA LOGGER CEX 300

0 and S adjustment

20

PROCEDURE

On the DATA LOGGER On the DETECTOR

Measuring channel in “calibrating mode” (when possible)

Wait for the signal to stabilize and adjust the zero on the display panel with the corresponding ZERO

potentiometer.

Wait for the signal to stabilize and adjust the sensitivity according to the reference gas with the corresponding

sensitivity potentiometer.

Return the measuring channel to normal operation.

Check that the detector is in pure air or, otherwise, inject air (using the calibration kit and complying with the relevant recommendations).

Now inject the recommended REFERENCE gas (using the calibration kit and after reading the relevant

recommendations).

Stop injecting the reference gas and remove the gas injection pipe. Then wait for and check the return to

ZERO. (Otherwise, repeat the procedure).

1.3 Calibrating the CTX 300 Case No. 1: CTX 300 equipped with a display panel and diodes (LED)

Item 3

Item 2

FIGURE 1 Item 1

CAL

CALIBRATION HAS BEEN COMPLETED

21

The detector is operating: the green diode (LED), (item 1, Fig. 1) is illuminated and the display panel indicates the measurement. Move the maintenance switch (item 2, Fig. 1) to the “CAL” position (calibration). The yellow diode (item 3, Fig. 1) lights up and the detector sends a 2 mA current to the data logger (relays inhibited). Check that the detector is in pure air or, otherwise, inject air (using the calibration kit and complying with the relevant recommendations). Wait for the measurement to stabilize (on the display panel) and adjust the ZERO with the ZERO potentiometer on the cell unit (item 1, Fig. 2). Then inject the recommended reference gas. (Use the calibration kit and read the recommendations). Wait for the measurement to stabilize and adjust the sensitivity according to the reference gas, using the sensitivity potentiometer on the cell unit (item 2). Stop the injection of the reference gas and remove the gas injection pipe. Then wait for and check the ZERO resetting. (Otherwise, repeat the procedure). Move the maintenance switch back to the “MES” position (measurement). The yellow diode (LED) is extinguished.

CALIBRATION HAS BEEN COMPLETED

Item 1

Item 2

FIGURE 2

22

Case No. 2: CTX 300 without display panel and without LED, and CTX 300 “Vehicle park CO”7 The detector is in normal operation. Move the maintenance switch (item 5, Fig. 3) to the “CAL” position (calibration). The detector sends a 2 mA current to the data logger (relays inhibited). Check that the detector is in pure air or, otherwise, inject air (using the calibration kit and complying with the relevant recommendations). Connect up a millivoltmeter (mV DC gauge) as shown below (item 1, Fig. 3). Wait for the signal (in mV) to stabilize and adjust the ZERO using the ZERO potentiometer on the cell unit (item 3, Fig. 4).

7 If there are several “vehicle park CO” detectors wired in loop configuration (max. 5), detectors must be calibrated one by one.

Item 3 (0)

Item 4 (s)

FIGURE 4

Item 5

MES

+ Item 1

FIGURE 3 CAL

- V +

23

Then inject the recommended reference gas. (Use the calibration kit and read the recommendations). Wait for the signal to stabilize and adjust the sensitivity according to the reference gas using the sensitivity potentiometer on the cell unit (item 4, Fig. 4). Read the signal on the pins provided for that purpose (item 1, Fig. 3 below) = 1,600 mV at full scale. For example: In the case of a detector in the 300 ppm gas range, you have:

- 0 mV Õ for ZERO - 1,600 mV Õ for 300 ppm

Stop the injection of the reference gas and remove the gas injection pipe. Then wait for and check the zero resetting. (Otherwise, repeat the procedure). Move the maintenance switch back to the “MES” position (measurement), (item 5, Fig. 3).

1.4 Calibrating the CTX 300, OXYGEN type Case No. 1: CTX 300, oxygen type, equipped with a display panel and diodes (LEDs) Carry out the same procedure as that described in paragraph 1 - 3 (CTX 300), but making only, and directly, the sensitivity adjustment in order to read 20.9% O2 on the display panel. Remark: For the purpose of this adjustment, there is not necessarily any need to inject oxygen as it is present in the normal atmosphere. Case No. 2: CTX 300, oxygen pipe, without display panel or diodes (LEDs) Carry out the same procedure as for case number 2 in paragraph 1-3 (CTX 300), but making only, and directly, the sensitivity adjustment in order to read the signal corresponding to 20.9% O2. (See the remark above for case number 1). Value of signal in mV =

- 1,600 mV at full scale = 30% O2 - 1,1115 mV at 20.9% O2 - 0 mV at 0% O2

24

Remarks: The current transmitted by the CTX 300 detector (toxic gas or oxygen type) to the data logger can be measured on the main circuit by connecting a millivoltmeter to the pins provided for that purpose (see Fig. 5 below):

- for 4 mA Õ read 400 mVDC - for 20 mA Õ read 2 VDC

1.5 Calibrating the CTX 300 SC (semiconductor type) (without display panel or diodes)

The detector is in normal operation, with the switch (item 1, Fig. 6) in the “MES” position (measurement).

FIGURE 5

- + Main circuit of detector CTX 300

V

Item 1 MES

Circuit of detector CTX 300 SC (semiconductor)

FIGURE 6

25

Check that the detector is in pure air or, otherwise, inject air (using the calibration kit and complying with the relevant recommendations). Important: It is MANDATORY to use a special kit, called a “humidifier kit” (ref. 6335919) in order to correctly calibrate a detector equipped with a semiconductor type cell.

PROCEDURE FOR UTILIZATION OF HUMIDIFIER KIT

Use a wash bottle (1) and distilled water. (1) Cylindrical polyethylene flask fitted with a nozzle for easy pouring. Remove the lid from the humidifier and inject enough water to saturate the filter paper. Water must not flow inside the humidifier. Reinstall the lid and connect the tubes to the end fittings leading to the flowmeter, the reference gas cylinder and the gas input pipe. Adjust the flow rate to 60 l/h and wait 10 minutes to bleed the humidifier. Connect the gas input pipe to the detector nose and wait at least five minutes for the measurement to stabilize.

Remark : The detector must be supplied with power for at least two hours before making any adjustment.

FIGURE 7

26

Connect up a millivoltmeter (mV DC gauge) as shown below and make adjustment using potentiometer P5 (item 1, Fig. 8). Then read 880 mV. (This value corresponds to a gas ZERO current of 4 mA). Then inject the recommended reference gas (and see Appendix 2), using the same humidifier kit and following the same procedure as for zero adjustment. Wait for the measurement to stabilize. Use the sensitivity potentiometer (item 2, Fig. 8). Then take a full scale reading, such as: 4,400 mV (corresponding to 20 mA).

I = 4 mA + 16 mA X value of reference gas Measuring range

NB: When taking the reading with the voltmeter as indicated in Figure 3, the following voltages (1) may be read, for example: - For 1 mA = 220 mV - For 4 mA = 880 mV (ZERO) - For 20 mA = 4400 mV (full scale) (1) U = 220 Ω X I (4 to 20 mA) Stop the injection of calibrating gas and check the resetting to 0 (4 mA or 880 mV). Otherwise, repeat the procedure.

CALIBRATION HAS BEEN COMPLETED

(P 5) Item 1 Item 2

V

FIGURE 8

corresponding to U = 880 mV + 3520 mV Measuring range

27

2. REPLACING A CELL A cell must be replaced when: - calibration is no longer possible (lack of sensitivity), - following maintenance for a damaged cell and/or significant loss of sensitivity, preventive

maintenance, etc.). Remarks : The existing cell must be replaced with a cell of the same type. (See the chapter on Spare parts list). Then, in the case of a non-calibrated cell (cell of type EXPLO/SC or Vehicle park/CO), a new calibration operation must be carried out.

3. Scrapping of CEX/CTX 300 Concerning the conservation, of the protection and the improvement of the quality of the environment, as well as for the protection of the health of the persons and the careful and rational use of natural resources, CEX/CTX 300 has to be the object of a selective collection for the electronic equipments and cannot be scrapped with the normal domestic waste. The user thus has the obligation to separate the CEX/CTX 300 of the other waste so as to guarantee that it is recycled in a sure way at the environmental level. For more details of the existing sites of collection, contact the local administration or the distributor of this product.

4. SPARE PARTS LIST

4.1 EXPLO detector, type CEX 300

DESCRIPTION OFSA REF.

Basic CEX 300: French version English version CEX 300 for armoured cable French version English version

6513494

6513499

TOOLS

TOOL KIT CEX 300

6147867

ACCESSORIES

MOUNTING BRACKET

(For attachment of CEX 300 to ceiling)

6322420

GAS COLLECTOR 6323607

28

GAS INPUT DEVICE 6331137

GAS CIRCULATION HEAD

6327905

REMOTE GAS INPUT DEVICE

6327906

SPLASH GUARD DEVICE

6792844

SPARE FILTERS PTFE PROTECTIVE FILTER ACTIVE CARBON PROTECTIVE FILTER

6335953

6335954 SPARE CELLS

CEL CFC 300

CEL CFC 300 AP

CEL CFC 300 NH3

CEL CFC 300 AP CHLORINE CEL CFC 300 NH3 5,000 ppm

6313662

6313663

6313664

6313665

SPARE PARTS METAL GLAND (6 TO 11 MM) DOUBLE-ARMOUR GLAND (8.5 TO 16 MM) ADHESIVE FRONT FACE LOCATION LABEL

6143442 6143395 6815918 6815923

29

4.2 Toxic gas or oxygen detector CTX 300

DESCRIPTION OFSA REF.

CTX 300 for toxic gas without display panel 2-wire wiring, bilingual French/English front face CTX 300 for toxic gas with display panel 3-wire wiring, 31/2-digit LCD display panel, bilingual French/English front face

See sales ref.

See sales

ref.

TOOLS TOOL KIT CTX 300

6147868

ACCESSORIES MOUNTING BRACKET (stainless steel)

(For attachment of CTX 300 to ceiling)

6322420

GAS COLLECTOR (stainless steel) 6323607

GAS INPUT DEVICE 6331137

GAS CIRCULATION HEAD (PVC)

for CO, H2S, O2

6327905

SPLASH GUARD DEVICE 6792844

SPARE FILTERS

PTFE PROTECTIVE FILTER

6335953

PRECALIBRATED O2 CELL UNIT

CELL UNIT CTX 300 O2, 0-30% vol. CELL UNIT CTX 300 O2, special, 0-100% vol.

6313754

6313660

30

PRECALIBRATED CELL UNIT

CELL UNIT CTX 300 CO - 100 ppm CO – 300 ppm CO – 1000 PPM CELL UNIT CTX 300 CO - 1% vol. CO – 10 % vol CELL UNIT CTX 300 H2S - 30 ppm H2S – 100 ppm H2S – 1,000 PPM CELL UNIT CTX 300 NO - 100 ppm NO – 300 ppm NO – 1,000 PPM CELL UNIT CTX 300 NO2 - 10 ppm NO2 – 30 ppm

CELL UNIT CTX 300 ETO - 30 ppm

CELL UNIT CTX 300 SO2 -10 ppm SO2 – 30 ppm SO2 – 100 ppm

CELL UNIT CTX 300 CL2 - 10 PPM CELL UNIT CTX 300 H2 – 2,000 PPM H2 – 2 %VOL

CELL UNIT CTX 300 HCL – 30 PPM HCL – 100 PPM

CELL UNIT CTX 300 HCN – 10 PPM HCN – 30 PPM CELL UNIT CTX 300 NH3 – 100 PPM NH3 – 1,000 PPM NH3 0 À 5000 PPM CELL UNIT CTX 300 HF – 10PPM CELL UNIT CTX 300 03-1 PPM CELL UNIT CTX 300 PH3-1 PPM CELL UNIT CTX 300 CLO2 – 3 PPM

6313627 6313628 6313629

6313631 6313632

6313633 6313634 6313635

6313636 6313637 6313638

6313639 6313640

6313645

6313646 6313647 6313648

6313649

6313650 6313651

6313652 6313653

6313654 6313655

6313656 6313657 6313893

6313675

6313676

6313677

6313678

Miscellaneous spare parts COVER WITHOUT DISPLAY COVER WITH DISPLAY ADHESIVE FRONT FACE WITHOUT DISPLAY PANEL ADHESIVE FRONT FACE WITH DISPLAY PANEL DISPLAY BOARD “LOCATION” LABEL COMPLETE MAIN BOARD

6323608 6323609 6815919 6815921 6451466 6815923 6451465

31

4.3 Semiconductor type detector CTX 300 SC

DESCRIPTION OFSA REF.

CTX 300 for semiconductor type cell without basic display panel 3-wire wiring, bilingual French/English front face

6513501

TOOL TOOL KIT CTX 300

6147868

ACCESSORIES

MOUNTING BRACKET (For attachment of CTX 300 SC to ceiling)

6322420

GAS COLLECTOR 6323607

CALIBRATION KIT (filter + pipe)

6335919

HUMIDIFIER FILTER 6335918

AVAILABLE CELLS CELL CSC50 FG 318 CELL CSC50 FG SOL 218 CELL CSC50 FS 14SP CELL CSC50 FS 24 SP CELL CSC50 SP13 FIS

6313545

6313546

6313547

6313544

6793464

SPARE PARTS

COMPLETE PRINTED CIRCUIT BOARD GLAND PG9

6451396 6143428

32

4.4 Vehicle park CO detector CTX 300

DESCRIPTION OFSA REF.

CTX 300, CO detection for application in vehicle parks without basic display panel 2-wire wiring, 2-gland inlet PG9, bilingual French/English front face Intended for installation only. NO FREE CALIBRATED CELL UNIT

6513500

TOOLS TOOL KIT CTX 300 Vehicle park CO

6147868

ACCESSORIES MOUNTING BRACKET (For attachment of CTX 300 to ceiling)

6322420

GAS INPUT DEVICE 6331137

SPARE CELL

CELL CO TX 2000 0-500ppm

6313615

SPARE PARTS COMPLETE PRINTED CIRCUIT BOARD LOCATION LABEL ADHESIVE FRONT FACE GLAND PG9

6451479 6815923 6815919 6143428

33

V. CEX300 IS EXPLOSIMETRIC DETECTOR

1. Introduction

The CEX300 IS detector is designed to measure combustible gases in dusty or gaseous explosive atmospheres for surface industries in category 1GD and in category M1 coal mines.

2. Composition

The CEX300 IS detector comprises (cf. figure 1): § an antistatic polycarbonate casing (1) § an intrinsic safety electronic clipper circuit (2) § a gas measurement cell composed of catalytic filaments (3) § one or two cable inlet glands of different types (4)

3. Wiring

The installation will be undertaken in accordance with applicable standards, and more particularly EN 60079-14 and EN 60079-17.

Terminals 1, 2 and 3 of the CEX300 IS sensor will be connected to inputs 1, 2 and 3 respectively of the measuring device (cf. figure 1) via the limiter barriers that supply an intrinsic safety line to the sensor.

The individual connector cable wires connected to terminals 1, 2 and 3 of the CEX300 IS sensor will be sheathed in such a way as to prevent any possibility of contact with any exposed part supplied with power.

(1) polycarbonate casing (6) Cable to limiter barrier connection terminal

(5) Cell terminal (Wires kept as short as possible)

(4) gland

(3) measurement cell

(2) electronic clipping circuit

FIGURE 1

(4) optional gland entry point

34

Please note: the person responsible for IS installation (the “System Designer”) must draw up a system document demonstrating that every aspect of the system shown below complies with Intrinsic Safety. Please refer to EN 50039 for group II and the draft PR EN 50394-1 standard when drafting this document.

The maximum length of cable L depends on the following: From the Electrical Safety viewpoint: § internal impedances and limiter barrier input/output specifications § CEX300 IS input/output specifications (see below) § the length-related Capacitance, Inductance (or L/R) of the cable

From the Operational viewpoint:

§ the sensitive elements of terminals 2 and 3 of the CEX300 IS sensor are fed

with a 50 mA DC supply. The minimum voltage required is 3.5Volts. § the impedance between 1/2 and 1/3 is 1 Kohms; the limiter barrier impedance

must be a few Kohms at the maximum § the voltage between device terminals 2/3 must be less than 15 volts

Note: ISC/OLDHAM recommends that users request the system installation document.

4. Calibration

The procedure is identical to that for the CEX 300. Please refer to the previous paragraphs. 5. Replacing the cell

Replacement cells must be original ISC/OLDHAM parts. The four cell wires must be connected to the 4-way terminal such that they are as tight as possible (cf. figure 1 above)

CEX300 IS sensor

1. Signal Limiter Barrier

2. Power Supply Limiter Barriers

MEASUREMENT

DEVICE

Safe zone ATEX zone

1

2

3

1

2

3

L cable

35

VI. Special Specifications for use in Potentially Explosive Atmospheres in accordance with European Directive ATEX 94/9/EC.

The CEX300 and CEX300 SI detection devices comply with the requirements of European Directive ATEX 94/9/EC on potentially explosive atmospheres.

As a result of its metrological performance, as tested by the research and testing organisation INERIS, the CEX300 device, designed to measure explosive gasses, is classified as a safety devices and may therefore contribute to limiting the risk of explosion. The information contained in the following paragraphs should be adopted and complied with by the person responsible for the site on which the equipment is installed. Please refer to the provisions of European Directive ATEX 99/9/CE on improving health and safety conditions for workers exposed to potentially explosive atmospheres.

1. Specifications for mechanical and electrical installation in Classified Areas.

Installation will comply with all applicable standards, and particularly with EN 60079-14,

EN 60079-17 and EN 50281-1-2.

1.1 Explosion-proof detector (d) and enlarged safety (e) detector: CEX300

- These detectors are intended for use in surface industries II, Category 2, zones 1 and 2 (Gas) and zones 21 and 22 (Dust) for ambient temperatures from – 25°C to + 60°C in temperature class T6 and for ambient temperatures from – 25°C to + 70°C in temperature class T5.

- Cables will be mechanically protected. - The transmitter casing will be earthed using the external or internal terminal, which

should be corrosion-protected. Users should clean detectors regularly in order to prevent any external accumulation of dust.

- Mechanically, detectors will be installed such that the detection cell points downwards. Any variance of over 45° from the vertical will result in measurement errors.

- Power supply : voltage at the sensor terminals = 2.8 V max. Maximum power = 0.8 Watts.

- Power consumption : 400 mA max.

1.2 Intrinsic safety detectors (i) CEX300 SI

- These detectors are intended for use in surface industries II, Category 1, zones 0, 1 and 2 (Gas) and zones 20, 21 and 22 (Dust). They are also intended for coal mines I, Category M1. The ambient operating temperature range is –25°C to +70°C.

- Users should clean detectors regularly in order to prevent any external accumulation of dust.

- The person responsible for IS installation (the “System Designer”) must draw up a system document demonstrating that every aspect of the Power Cable Detector system complies with intrinsic safety. Please refer to EN 50039 for group II and EN 50394-1 for group I when drafting this document.

- The power supply must be of Intrinsic Safety type.

36

- The power supply specifications are as follows :

At terminal C2 in relation to earth

At terminal C3 in relation to earth

At terminal C1 in relation to earth

Maximum voltage 15 V 15 V 15 V Minimum resistance 10 Ω 10 Ω 1000 Ω

- The CEX300 IS input specifications are : Ci = 0 Li = 0

2. Metrological specifications for CEX300 explosive gas detector

The CEX device is classified as a safety device and may therefore contribute to limiting the risk of explosion.

The detector complies with the following European standards:

- European standards EN 50054 and EN 50057 for Methane (calibration gas), Propane and

Hydrogen (gasses following response curves) where it is used with ISC/OLDHAM detection devices SV4B, MX32, MX42A, MX48 and MX52.

2.1 Technical Specifications and Special Instructions for CEX300 explosive gas detector

2.1.1. Metrological details

Type C1000 filaments - +VQ1 Maximum concentration 100% LEL Principle Catalytic Estimated service life > 36 months Storage Away from air -10°C < T < 35°C

10% < RH < 60%. Maximum 6 months

Continuous temperature range -25°C to +55°C Humidity range 0% RH to 95% RH Pressure range 1 bar ± 10% Linearity variance (methane scale) Between 0% and 70% LEL: ≤ 1%

LEL Between 70% and 100% LEL: ≤ 7% LEL

Measurement reproducibility ± 2% of the value measured, or ± 1 LEL (or ± 0.05% CH4)

Long-term drift in normal operating conditions

Zero point: Sensitivity: Methane Propane/Butane

< 5% methane LEL per year Typical drift values < 20% of the value measured per year < 10% of the value measured per year

37

Effect of humidity (10% to 90% RH) at 40°C

± 5% of relative sensitivity

Maximum recommended interval between calibrations (normal operating conditions)

6 months

Calibration concentration 30– 80% LEL Response time (may vary ± 10% between sensors)

gas and concentration

injected

Methane (50% LEL)

Hydrogen (50% LEL)

Pentane (52% LEL)

Styrene (45% LEL)

t25 4 sec 3 sec 8 sec 12 sec t50 8 sec 6 sec 12 sec 40 sec t90 15 sec 10 sec 27 sec 60 sec

2.1.2. Special precautions for explosive gas detectors

• Cells are sensitive to certain poisons, which can reduce their sensitivity: emission of silicone-containing vapours at concentrations > 10 ppm and chlorinated or sulphurous products at concentrations > 100 ppm.

• A lack of oxygen (< 15% O2) or over-oxygenation (> 23% O2) may cause under-measurement (in the former case) or over-measurement (in the latter case).

• Cells must be located head downwards at installation or during maintenance work.

2.1.3. Response to other explosive gasses

It is recommended that the detector is calibrated using the gas to be measured. Users wishing to calibrate the detector using a gas other that detected and factory-programmed should refer to the following table, and use the recommended gas and corresponding coefficient.

Table 1: CALIBRATION COEFFICIENTS

Gas Empirical formula

LEL 1 UEL1 Vapour density

Coefficient3 CH4

Coefficient3

H

Coefficient3

But Acetone C3H6O 2.15% 13.0% 2.1 1.65 1.2 0.95 Acetylene C2H2 1.5% 100% 0.9 2.35 1.75 1.35 Ammonia NH3 15.0% 30.2% 0.6 0.9 0.65 0.5 Butane C4H10 1.5% 8.5% 2 1.75 1.25 1.0 Unleaded petrol 95 / 1.1% ∼6.0% 3 à 4 1.8 1.35 1.05 Ethane C2H6 3.0% 15.5% 1.04 1.5 1.1 0.85 Ethanol C2H6O 3.3% 19.0% 1.6 1.5 1.1 0.85 Ethylene C2H4 2.7% 34.0% 0.98 1.65 1.2 0.95 Natural gas CH4 5.0% 15.0% 0.55 1.0 0.75 0.55 L.P.G. Prop+But 1.65% ∼9.0% 1.85 1.65 1.2 0.95 Hexane C6H14 1.2% 7.4% 3.0 2.1 1.7 1.2 Hydrogen H2 4.0% 75.6% 0.069 1.25 1.0 0.8 Methane CH4 5.0% 15.0% 0.55 1.0 0.75 0.55 Octane C8H18 1.0% 6.0% 3.9 2.7 2.0 1.5 Pentane C5H12 1.4% 8.0% 2.5 2,1 1,7 1,2 Propane C3H8 2.0% 9.5 1.6 1.5 1.1 0.85 Toluene C7H8 1.2% 7% 3.14 4.0 2.95 2.3 Gas recommended for sensor calibration

38

Example (first row of table): calibration of an Acetone detector using 1% butane (by volume) as the calibrating gas Value to be displayed: 1% (butane injected) x 100 x 0.95 (Butane/Acetone coefficient) = 63% LEL 1.5% (butane LEL) N.B.:

- LELs vary depending on the source. Those values shown here are taken from European Standard EN 50054

- Coefficients are accurate to ± 15% Technical Specifications and Special Instructions for Oxygen detectors

3. . MARKINGS

3.1 CEX300 detector

OLDHAM 0080

CEX 300

II 2GD IP66 U max : 2.8V I max : 0.4 A P max = 0.8 W For tamb = 60°C EEx e d IIC T6 (85°C) For tamb = 70°C EEx e d IIC T5 (100°C) INERIS 01 ATEX0006X WARNING : ELECTROSTATIC CHARGES RUB OR WIPE ONLY WITH A WET RAG

3.2 CEX300 IS detector

For Group I

OLDHAM 0080

CEX 300 IS

I M1 IP66 EEx ia I INERIS 01 ATEX0006X Do not open when powered

The serial number and year of manufacture are marked on a label applied to the casing.

39

For Group II

OLDHAM

0080 CEX 300 IS

II 1 GD IP66 EEx ia II C T4 INERIS 01 ATEX0006X DO NOT OPEN WHEN POWERED WARNING : ELECTROSTATIC CHARGES RUB OR WIPE ONLY WITH A WET RAG

The serial number and year of manufacture are marked on a label applied to the casing.

40

41

APPENDICES

APPENDIX 1: WIRING SPECIFICATIONS APPENDIX 2: CALIBRATION INFORMATION APPENDIX 3: GENERAL LAYOUT VIEW OF CTX 300

42

APPENDIX 1

WIRING SPECIFICATIONS PURPOSE

This specification defines the general principles applicable to the design and manufacture of earthing devices for ISC/OLDHAM equipment, control stations and detectors, and of associated connecting equipment. REFERENCE DOCUMENTS

The electrical installation must comply with French regulations in force, European directives, AFNOR standards and codes in force, where applicable, as well as with the customer’s general and special specifications.

• NFC 15-100 Low-voltage electrical installations rules • NFC 17-100 Lightning protection - Installation of lightning conductors • EMC Electromagnetic compatibility - Directive 89/336/ APPLICABLE REGULATIONS

• Decree No. 88-10546 dated November 14 1988 (protection of personnel, etc.) • Order dated December 19, 1988 (requirements for installation of equipment in locations entailing

risks of explosion) • Decree No. 78-779 dated July 17, 1978 amended by decree No. 81-440 dated May 5, 1981

completed on July 1, 1991 • Order dated April 6, 1981, and September 7, 1982 • Order dated March 31, 1980 (regulation on electrical installations in establishments governed by

legislation on classified installations and liable to entail potential risks of explosion) GENERAL DESIGN

See the documents herewith in addition to the special instructions below. Cable raceways:

Metal cable raceways are earthed via "mains" chassis earth connections. The cross section of the earthing system cable is 10 mm².

Junction boxes: If polyester junction boxes are used, they must be equipped with:

- a metal plate with tapped holes for the earthing interconnection of metal glands

- a 4 mm² through earth terminal.

Chassis earth connections are linked to the earthing system by means of a bare galvanized steel conductor.

43

Loop resistance of a connecting cable pair - control station, detector -

This varies according to the type of detector and the type of control station (or power supply) proposed. See the specialized technical manuals according to the application.

ACCEPTABLE TYPES OF CABLES SUBJECT TO COMPLIANCE WITH THE INSTRUCTIONS IN THIS SPECIFICATION

Examples of cables This list is not exhaustive.

CNOMO FRN05 VC4V5-F

GMBS

GVCSTV RH

xx-xx-09/15- EG-SF EG-FA EG-PF

SY T1/2

* THE CABLES SPECIFIED BELOW HAVE NOT BEEN INTEGRATED IN ELECTROMAGNETIC COMPATIBILITY TESTS ON OUR PRODUCTS. THEY ARE USED UNDER THE USER’S RESPONSIBILITY

U1000 R2V(FV)*

U1000 RGPFV- RH*

A/H07 RN-F*

FRN07 RN-F*

GVS-RH*

44

SUBSTATION TF

/// ADF

FLAME DETECTOR WITH INTEGRATED

TRANSMITTER

///

//

///

///

S E E D E T A I L S

Splitter box

G A S a n d F LAME CAB I NE T

TG

/// ADF

FLAME DETECTOR WITH INTEGRATED

TRANSMITTER

Tox

// ADF

DETECTOR xx WITH/WITHOUT INTEGRATED

TRANSMITTER

X 16

45

The cable is connected to the equipotential connection at the ends of each section of cable via the gland, where applicable.

The electronic earthing system is connected to a specific earth electrode (resistance < 2 ohms) which is itself connected to the earth electrode for metal chassis earth connections (mains power) and to the plant earthing system.

EARTHING OF INSTALLATIONS - PRINCIPLE

EQUIPOTENTIAL EARTH CONNECTION DISTRIBUTED ON PLANT

123

PLANT EARTH

Clamping of cables on armour

Detector mount

123

SPLITTER BOX SSA

SPLITTER EARTH

CABINET

Measurement data logger,

ISC/OLDHAM or other

Cable shielding

Armour

46

UNIT SPLICE BOX WALL MOUNTED SPLITTER BOX 001-02-REy

DETECTION CABINET

The power supply pairs can be doubled, if required, when the lines

are too long

TF

1

x3 x2

x1

Armour

AA-BB-REx

1T1.3YYYY

AA-0B-REx

Chassis

1T1.3ZZZZ

Ta

3

2

1

Measuring data logger, channel 01

Inputs

AVAILABLE SEPARATE EARTHING SYSTEM REFERRED TO AS “ELECTRONIC” AND

DIFFERENT FROM “MAINS” EARTHING SYSTEM

DIAGRAM OF A LOOP

47

APPENDIX 2

Cell types and references Types of gas Measuring ranges After-sales reference gas Control gas

CSC300 : 6313545 CEL CSC 50 FG 318 Methane CH4

Hydrogen H2

Butane C4H10

Propane C3H8

Methyl chloride CH3Cl

Methylene chloride CH2Cl2

100% LEL

100% LEL

100% LEL

100% LEL

500 ppm

500 ppm

20 % LEL – 1 %CH4 20 % LEL – 0.8 %H2 20 % LEL – 0.37 %C4H10 20 % LEL – 0.4 %C3H8 50 ppm CH3Cl 100 ppm CH CL

2,000 ppm H2 = 190ppm+-25ppm

100 ppm CO=80ppm-+15ppm

CSC300 : 6313546 CEL CSC50 FG SOL 318 Trichloroethylene C2HCl3 Toluene C6H5CH3 Xylene C6H4 (CH3)2 Ethanol C2H5OH

500 ppm

2000 ppm

2000 ppm

5000 ppm

75 ppm Trichloroethylene

100 ppm Toluene

100 ppm Xylene

1,000 ppm Ethanol

300 ppm CO=120 ppm+-35ppm 300 ppm CO=330ppm+-50ppm 300 ppm CO=330ppm+-50ppm 1,000ppm H2=880ppm+-150ppm

CSC 300 : 6313547 CEL CSC50 FS 14 SP Freon R12 Freon R22 1 % volume

2000 ppm

1,000 ppm R12

1,000 ppm R22

0.5%CH4= outside range 0.5%CH4=750ppm+-200ppm

CSC 300 : 6313544 CEL CSC50 FS 24 SP Freon R134A

Freon R141

Freon R142B

Freon R11

Freon R23

2,000 ppm

2,000 ppm

2,000 ppm

1% volume

1% volume

1,000 ppm R134A

1,000 ppm R22=500ppm

1,000 ppm R22=600ppm

1,000 ppm R11

1,000 ppm R134A=1100ppm

0.5%CH4=2000ppm+-500ppm 0.5%CH4=250ppm+-70ppm 0.5%CH4=150ppm+-50ppm

48

APPENDIX 3

ITEM Qty DESCRIPTION DWG No. OFSA REF. MATERIAL 1 1 HOUSING 17262GO 6121556 PA 12 2 1 MAIN BOARD CTX 300 TOX 4-20 mA . 6451465 . 3 2 PLASTIC GLAND PG9 . 6143428 . 4 1 METAL CLIP 17888G3 6142238 STAINLESS STEEL 5 1 CLIP PIN CEX 300 . 6345784 STAINLESS STEEL 6 2 NUT, GLAND PG9, LT N1 . 6143429 LT N1 7 2 INSULATING WASHER . 6905544 . 8 3 SCREW CHC M3 L8 . 6902146 . 9 1 DISPLAY PANEL CIRCUIT, CTX 300 . 6451466 . 10 1 CELL UNIT, TOXIC GAS, PRECALIBRATED . xxxx . 11 1 DISPLAY PANEL COVER 17265G1 6123565 PA 12 12 1 COVER SEAL . 6136040 NEOPRENE 13 1 FRONT FACE CTX 300, DISPLAY PANEL . xxxx . 14 1 LABEL, ISC/OLDHAM DATA LOGGER . 6815917 . 15 4 SCREW CHC M5 L20-6 6902506 STAINLESS STEEL 16 1 SEAL, DISPLAY PANEL PANE 17887G4 6136042 NEOPRENE 17 1 DISPLAY PANEL PANE 17710G3 6133526 POLYCARBONATE 18 7 SCREW ECO-SYN TF M3 L8 . 6902507 . 19 1 SPACER MFR 3-6, 5-32-PA66 . 6132379 . 20 1 CELL SEAL 18027G4 6136045 NEOPRENE

ASSEMBLY DRAWING OF DETECTOR CTX 300, DISPLAY PANEL

18

15

12

14

13

11

17 16 9

19

7 2

9

20

8 1

3

10

4 6

49