TRANSMITTER DETECTORS FOR FLAMMABLE GASES OR CO2

TECHNICAL MANUAL

Ref.: NPOIRGB Rev C

GAS DETECTION Thank you for purchasing an INDUSTRIAL SCIENTIFIC instrument. We appreciate your business. We trust that our commitment to the technical excellence of our products will ensure your complete satisfaction. Please read the following document carefully.

LL II MM II TT AA TT II OO NN OO FF LL II AA BB II LL II TT YY * INDUSTRIAL SCIENTIFIC will not be liable under any circumstances for material losses, personal injury

or death resulting in whole or in part from the inappropriate use of this equipment, the installation or storage of this equipment not in conformance with the instructions and warnings presented in this manual and/or not in conformance with current standards and regulations.

* INDUSTRIAL SCIENTIFIC neither condones nor authorizes any other company, individual or legal entity

to make any claims as to the liability of INDUSTRIAL SCIENTIFIC , even if said company, individual or legal entity is directly involved in the sale of INDUSTRIAL SCIENTIFIC products.

* In no event will INDUSTRIAL SCIENTIFIC be liable for any direct or indirect damage including those

resulting from the sale and the use of its products IF THOSE PRODUCTS WERE NOT SPECIFIED AND SELECTED BY INDUSTRIAL SCIENTIFIC FOR SUCH USE.

OO WW NN EE RR SS HH II PP CC LL AA UU SS EE SS * The images, blueprints, specifications and information contained in this document belong to INDUSTRIAL

SCIENTIFIC . * This information may not be physically, electronically or otherwise reproduced, copied, disclosed, or

translated, either in part or in whole, or used in the manufacturing or sale of INDUSTRIAL SCIENTIFIC equipment, nor for any other reason without prior permission from INDUSTRIAL SCIENTIFIC .

WW AA RR NN II NN GG SS * This document is not contractual. On behalf of its clients, Industrial Scientific reserves the right to modify the

technical characteristics of its equipment without notice to improve product performance. * CAREFULLY READ THIS DOCUMENT BEFORE USING THE PRODUCT: this document should be

carefully read by any individual who has or who will have the authority to use, maintain or repair this equipment.

* Any and all warrantees and performance claims will only be valid if the equipment is operated,

maintained and repaired in accordance with INDUSTRIAL SCIENTIFIC directives, by INDUSTRIAL SCIENTIFIC personnel or by personnel appointed by INDUSTRIAL SCIENTIFIC.

WW AA RR RR AA NN TT YY * Two-year return to factory warranty under normal operating conditions on parts and labor; consumable

materials excluded (sensors, filters, etc.)

4

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Figure 1

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Figure 1

Earth screw

(for armoured or non-armoured cable)

Cable gland, M20

Fastening lug

5

REP NBR DESIGNATION REF OFSA 1 1 ANTI-SPLASH COVER 6313862 2 1 O-RING DIA. DIAM=65x3 6136242 3 1 LOCKING NUT M5 6903376 4 1 METAL ENCLOSURE COVER 6123723 6 2 EEx 2-PIN TERMINAL BLOCK 6152989 7 1 O-RING DIA DIAM=69x2 6135036 8 1 IR SENSOR LED CARD 6451495 OPTION 5 1 CABLE GLAND, M20, ARMOURED CABLE OR

CABLE GLAND, M20, NON-ARMOURED CABLE 6343489 6343493

OOLLCCTT IIRR EExxpp lloo dd eedd vv iiee ww

Figure 2

6

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Iout

0V

+24VDC

Ser

the electric wires will be equipped with a crimped end

OLCT IR connections

Iout Output signal in mA (terminal 1 of INDUSTRIAL SCIENTIFIC central units)

0V Power supply 0 V (terminal 2 of INDUSTRIAL SCIENTIFIC central units)

+24VDC Power supply + (terminal 3 of INDUSTRIAL SCIENTIFIC central units)

Ser = service (do not use)

Check LED

Magnetic receiver

Cable gland, M20 (for armoured or non-armoured cable)

7

/M25

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GAS INLET AND OUTLET

GAS CIRCULATION HEAD

Earth screw

Fastening lug

Cable gland, M20

8

Bracket : 6132380

FFiigguurree 55

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9

CONTENTS

1. INTRODUCTION ......................................................................................................................................................... 10

2. TECHNICAL SPECIFICATIONS (1) ............................................................................................................. 11

2.1. Interference of common gases on the OLCT IR (CH4 and HC)......................................12

3. INSTALLATION ........................................................................................................................................................... 13

3.1. Safety Precautions ...........................................................................................................13 3.2. Mechanical installation....................................................................................................13 3.3. Electrical installation .......................................................................................................13

4. START UP.......................................................................................................................................................................... 14

5. MAINTENANCE ........................................................................................................................................................... 14

5.1. Corrective maintenance ...................................................................................................14 5.2. Periodic maintenance .......................................................................................................14 5.3. Verification......................................................................................................................15 5.4. Calibration: ......................................................................................................................15

6. DISPOSAL ......................................................................................................................................................................... 17

7. LIST OF ACCESSORIES ........................................................................................................................................ 18

8. SPECIAL INSTRUCTIONS FOR USE IN ATEX EXPLOSIVE ATMOSPHERES

AND FOR OPERATING SECURITY ............................................................................................................. 19

8.1. Use in ATEX explosive atmospheres ..............................................................................19 8.2 Operating security............................................................................................................19

9. MARKING: ....................................................................................................................................................................... 21

10. MANUFACTURER’S DECLARATION OF CONFORMITY........................................................ 22

10

11 .. IINNTT RROODDUUCCTT IIOONN

The OLCT IR gas detector is designed to measure explosive gas or CO2 levels in the environment. The

infrared technology used by the OLCT IR guarantees extreme detection accuracy. Powered with direct current, the OLCT IR delivers a normalized current of 4-20 mA according to the measured

concentration of gas. It is equipped with a local calibration device, which enables calibration in ATEX zones without the need to open the detector case.

The OLCT IR detector can be used in atmospheres containing explosive gases and dust and meets all of the essential requirements of the European ATEX 94/9/EC directive and the following European EN and international IEC standards:

- EN 60079-0: 2006 IEC 60079-0: 2004 - EN 60079-1: 2004 IEC 60079-1: 2003 - EN 60079-7: 2004 IEC 60079-7: 2001 - EN 60079-11: 2007 IEC 60079-11: 2006 - EN 61241-0: 2006 IEC 61241-0: 2004 - EN 61241-1: 2004 IEC 61241-1: 2004

The OLTC IR is available in various configurations. The primary configurations are listed below:

Methane Version (CH4): - Optimized for methane detection with a standard range of 0-100% LEL. (0-5% vol) - This version can be adjusted to a range of 0-4.4% vol for use in countries that use this value as the lower

explosive limit for methane. - Methane detection from 0 to 100% vol.

HC Version:

- Optimized for the detection of saturated hydrocarbons (propane, butane, pentane, hexane, ethanol). The standard range can be set in the factory:

C3H8 – 0 to 100% LELC4H10 – 0 to 100% LEL

C2H6O – 0 to 100% LEL C6H14 – 0 to 100% LEL

CO2 Version:

- Optimized for CO2 detection on a scale of 0 to 3% vol.

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22 .. TT EECCHHNNIICCAALL SSPPEECCIIFF IICC AATT IIOONNSS ((11 ))

Detection method Optics: Infrared absorption

Gases detected (3) Methane: Propane, Butane, Hexane, Ethanol (2); CO2 Note: Programmed by INDUSTRIAL SCIENTIFIC in factory

Standard measurement scales 100% LEL CH4, C3H8, C4H10; 100% volume CH4; 3% CO2

Accuracy +/-3% LEL CH4 or +/- 5 % of indication

+/-2% LEL HC or +/ - 3 % of indication

Long term stability in temperatures between

-25°C and 55°C.

Zero: +/-1 LEL gain : +/-5% LEL or +/- 10% of indication

Response time without protective cover

with protective cover

T50 < 7 seconds T90 < 8 seconds T50 < 10 seconds T90 < 16 seconds

Power supply at detector terminals 16 to 30 VDC

Average consumption 2.5 min. watts (max intermittent current = 500 mA)

Output current (signal) Source of coded current between 0 to 25 mA (non-isolated) linear 4-20 mA current proportional to gas levels detected 0 mA: electronic fault or power failure 0.5 mA: optical fault, temperature out of range 2 mA: calibration mode current higher than 23 mA: scale exceeded

Cable type Shielded with 3 active wires

Max. resistance per cable conductor (with INDUSTRIAL SCIENTIFIC central controller)

8 ohms in loop (250 m in 1.5 mm²)

Max. resistance of output current 300 ohms

Cable inlet type M20 cable gland

Cable thickness Armored cable: Outside diameter 8.5 to 16 mm

Inside diameter 6 to 12mm

Unarmored cable: Inside diameter 6 to 12mm

Detector operating temperature -25°C to 55°C (-40°C to 55°C available upon request)

Storage temperature: -40°C to 55°C

Electromagnetic Compatibility Conforms with EN 50270

IP Rating IP66

Explosive atmospheres Conforms to European Directive ATEX 94/9/EC (see attached declaration) and to the IEC Ex Schema

Weight 1.6 Kg

Materials INOX 316L

Humidity 0 to 99% relative humidity (noncondensing)

Pressure influence Measurement: partial pressure

(1) Due to the continual improvement of our products, INDUSTRIAL SCIENTIFIC reserves the right to modify the product specifications listed in this document at any time.

(2) The majority of organic components comprising C-H bonds

(3) Hydrogen is not detected.

Saturated hydrocarbons trigger more signals than CH4 (typically 5 to 7 times more), while unsaturated or benzenic hydrocarbons trigger fewer signals than CH4. Insensitive to silicones, H2S, for the explosive gas version, non-condensing water vapor, O2, N2…

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OLCTIR CH4 calibré CH4 : Interférence des principaux alcanes & alcools

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

90,0

100,0

0,0 10,0 20,0 30,0 40,0 50,0 60,0 70,0 80,0 90,0 100,0 Conc [% LEL]

Méthane CH4 Propane C3H8 Butane C4H10 Hexane C6H14 Nonane C9H20 Cyclohexane C6H10 Méthanol CH3OH Ethanol C2H6O

% LEL CH4

Warning: Acetylene and ammonia interfere with detector measurements. If acetylene is present in quantit ies over 2,000 ppm or if ammonia is present in quantities exceeding 10,000 ppm, the presence of other gases may be masked.

2.1. Interference of common gases on the OLCT IR (CH4 and HC)

Any organic molecule with at least one C-H bond except for acetylene can potentially be detected by the OLCT IR, though the sensitivity level will vary. Note the following:

• Regardless of the type of sensor, saturated hydrocarbons are more easily detected than CH4; • The OLTC IR CH4 is more sensitive to CH4 and less sensitive to hydrocarbons than the OLCT IR HC; • For an OLCT IR CH4 : an output signal of 20mA signals a 100% LEL CH4 or 20% LEL C3H8 value (a

factor of 5); • For an OLCT IR HC: an output signal of 6.4mA signals a 100% LEL CH4 or 14% LEL C3H8 value (a

factor of 7); • The OLCT IR HC is generally better adapted for saturated molecules such as alkanes, alcohols, ketones,

organic acids, esters and ethers. • The OLCT IR CH4 is generally better adapted for unsaturated alkene and aromatic type molecules with

C-H bonds, which often give a weaker signal than CH4 For example, the response curves at +/-15 % for OLCT IR detectors for common HCs.

• OLCT IR CH4

OLCTIR CH4 calibrated for CH4: Interference of the main alcanes and alcohols

Conc [% LEL]

Methane CH4 Propane C3H8 Butane C4H10 Hexane C6H14 Nonane C9H20 Cyclohexane C6H10 Methanol CH3OH Ethanol C2H6O

% LEL CH4

13

• OLCT IR HC propane calibrated

33 .. IINNSSTT AALLLLAATT IIOONN

WARNING: Before proceeding, refer to paragraph 8 titled, “Specific Instructions for Assembly in Explosive Atmospheres” on page 18.

3.1. Safety Precautions The detector must be installed in an appropriate location to enable optimal protection. The OLCT IR detector must be mounted horizontally so that the arrow on the protective cover points up. If mounted incorrectly, the OLCT IR detector may not be able to detect gases or vapors in the air.

3.2. Mechanical installation - Follow the aforementioned safety instructions carefully - Inspect the detector: see Figures 1 and 4. - The OLCT IR detector is intended to be mounted on a vertical support structure, such as a wall. If

mounted on a horizontal surface, use an adaptor bracket (part number 6132380, see Fig. 5).

3.3. Electrical installation - Ensure that the installation complies with currently enforced standards, EN/IEC 60079-14, EN/IEC 61241-

14 standards, zone classification, and all other enforced editions or national standards. - To ensure the proper functioning of the detector, cable resistance should remain within the limits specified

in the technical specifications table. - Power supply at detector terminals: 16 to 30 VDC

Installation: - Remove the protective cover (see Ref. 4, Fig 2) to access the connection terminals - Connect the 3 active wires as shown in Fig 3. - Replace the protective cover - Ground the detector body (Fig. 1).

OLCT IR HC calibré C3H8 : Interférence des principaux alcanes & alcools

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

90,0

100,0

0,0 10,0 20,0 30,0 40,0 50,0 60,0 70,0 80,0 90,0 100,0 Conc [% LEL)

Méthane CH4 Propane C3H8 Butane C4H10 Hexane C6H14 Nonane C9H20 Cyclohexane C6H10 Méthanol CH3OH Ethanol C2H6O

% LEL C3H8 OLCT IR HC calibrated for C3H8 : Interference of the main alcanes & alcools

Conc [% LEL]

Methane CH4 Propane C3H8 Butane C4H10 Hexane C6H14 Nonane C9H20 Cyclohexane C6H10 Methanol CH3OH Ethanol C2H6O

% LEL C3H8

14

-

44 .. SSTT AARRTT UUPP

- Verify that all equipment connections and installations have been performed correctly. - To avoid the accidental triggering of alarms, start up in safety mode (alarms are blocked). - Power up the equipment and wait 2 or 3 minutes to allow it to stabilize: (During the first minute of warm-

up, the detector will deliver a current of 2 mA) - Test the zero (4 mA) and gas response. For CO2, inject nitrogen to correctly adjust the zero setting.

55 .. MM AAIINNTT EENNAANNCCEE

The adjustment operations in this paragraph are reserved for authorized, trained personnel because they may compromise detection reliability.

Never open a detector case containing an inert gas. If the detector is opened, the sensor must be returned to a factory for repair. Inspection and maintenance operations must be conducted in accordance with EN60079-17 or IEC 60079-17, currently enforced editions or other national standards. The OLCT IR is designed to require mini mal maintenance. Regularly inspecting the detector heads is the only maintenance needed.

5.1. Corrective maintenance

Optical surfaces only need to be cleaned in the event of an optical disturbance (output current of 0.5 mA) or

signal drift:

­ remove the protective cover (Ref. 1 Fig. 2) ­ clean the optical surfaces with a soft, lint-free cloth and isopropyl alcohol ­ if necessary, clean the optional mosquito cover and the protective cover ­ allow to dry ­ replace the protective cover, ensuring that the arrow is properly oriented.

5.2. Periodic maintenance

Warning: The adjustment operations in this paragraph are reserved for authorized, trained personnel because they may compromise detection reliability. Gas detectors are safety devices. In consideration of this, Industrial Scientific recommends regular testing of fixed gas detection installations. This type of test consists of injecting a standard gas of sufficient concentration into the sensor to set off the pre-adjusted alarms. This test does not, in any event, replace a full calibration of the sensor. Industrial Scientific also recommends completely calibrating detectors with a known and certified concentration of gas every 3 or 4 months. Frequency of gas testing depends on the industrial application in which the sensors are used. Inspection should occur frequently during the months following installation startup, later it may be spaced out if no significant problem is observed. Time intervals between tests should not exceed 3 months. If a detector does not react upon contact with gas, it must be calibrated. Calibration frequency should be adapted based on test results. However, it should not be greater than one year.

!!

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Industrial Scientific recommends using a test gas to calibrate detectors. The site manager is responsible for implementing the safety procedures on his site. Industrial Scientific is not responsible for implementing safety procedures.

5.3. Verification

Ø Required equipment:

- A gas calibration kit (test gas tank and accessories) - A test cover (Part no. 6313829)

Ø Procedure

- Use the test cover to inject a test gas (at 2l/m) and check for an accurate reading or for the triggering of appropriate alarms (note; without the test cover, the level may be underestimated (in winds > 20Km/h)

5.4. Calibration:

Ø Required equipment:

- A gas calibration kit (test gas tank and accessories) - A magnet for using the maintenance menu and for validating settings (Part no. 6155651)

calibration pipe (Part no. 6313863)

Preparation:

- Verify that the equipment is functioning normally - Put the central controller into calibration mode (relays are blocked) - Remove the screw (Ref. 3, Fig 2) and remove the protective cover - Position the calibration hood as shown in Fig. 4 - Connect the kit tube to one of the hood terminals - Inject air or the test gas at a flow rate between 1 l/min to 2 l/min (stabilization time: 2 min). - The concentration of test gas that must be used is shown on the detector - Use a battery to complete the procedure as indicated by the red LED (Ref. 8, Fig 2)

Calibration:

Procedure

Calibration is usually limited to adjusting the zero. Sensitivity adjustments are only performed on rare occasions (if performed more often: see diagram). - Adjust the zero in a gas-free environment

- If clean air is not available, inject nitrogen or reconstituted air to ensure that the zero is properly adjusted; for CO2, inject nitrogen.

- Follow the instructions in the diagram - After the procedure: Stop injecting gas and replace the original anti-projection cover, taking care that the

arrow is properly oriented - Put the central measuring controller back into “normal mode” (relays are no longer blocked).

WARNING : During the calibration, the security function is no guaranteed and the output current is

blocked at 2mA up to the end of the procedure.

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Normal operation - Calling up the calibration procedure - Zero setting:

§ Inject nitrogen on the OCLT IR transmitter

Note: Waiting time for the zero to stabilise ~ 20 s - Validation of the zero and switch

to sensitivity setting - Abort sensitivity setting - Or continuation of sensitivity

setting procedure (inject the amount of standard reference gas indicated on the OLCT IR)

Note: Waiting time for the value to stabilise ~ 90 s - Validation of sensitivity?

I out: measurement current (4 to 20 mA) LED: Off

Fast sweep of the magnet

I out: 2 mA LED: Slow flash

Exit from procedure without action

Slow sweep of the magnet

I out: 2 mA LED: Moderate flash

Slow sweep of the magnet Exit from procedure

without action

Fast sweep of the magnet

I out: 2 mA LED: Slow flash

Slow sweep of the magnet Exit from procedure with zero validation

I out: 2 mA LED: Moderate flash

NO =

Slow sweep of the magnet

Exit from with zero validation

YES =

Fast sweep of the magnet

- I out: depending on the measurement or faults LED: Off

17

KEY: § Magnet Movement: Action of moving the magnet in front of the magnetic receptor located near the red light

emitting diode (Fig. 3). § Fast movement: < 1s.

§ Slow movement: > 1s. up to the point where the procedure output is acknowledged (red LED off) .

§ I out : output current

§ LED: (red off or blinking).

Note: the interval between each battery movement cannot exceed 10 minutes or the procedure will be canceled

and the equipment will return to normal operation mode.

66 .. DDIISSPPOOSSAALL

For the preservation, protection and improvement of environmental quality, and for the protection of human health and the prudent and rational utilization of natural resources, the OLCT IR must be disposed of separately from electronic equipment and cannot be disposed of with normal household waste. The user therefore has an obligation to separate the OLCT IR from other waste to ensure that it is recycled safely for the environment.For further details on existing collection sites, contact the local administration or seller of the product.

18

77 .. LL IISSTT OOFF AACCCCEESSSSOORRIIEESS

Accessories Part No. Gas flow head / Calibration pipe

6313863

Test hood

6313829

Calibration magnet 6155651 Protection shield (weather and solar radiation shield)

6124976

Mounting bracket (bolts not included)

6132380

Anti-projection cover Cross point screw M5 D40

6313862

6903376

OLCT IR Mosquito cover

6313946

Refer to Figures 2 and 4

Warning: Storage temperature: -40°C to 55°C

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8.1. Use in ATEX explosive atmospheres

In general, the ambient temperature, the power supply voltage and power mentioned below pertain to safety precautions against explosion. These parameters are not metrological data (refer to the technical characteristics table).

- Conformity to European Harmonized EN standards and to international IEC standards:

The OLCT IR conforms to the following standards: Protection against explosion:

- EN 60079-0: 2006 IEC 60079-0: 2004 - EN 60079-1: 2004 IEC 60079-1: 2003 - EN 60079-7: 2004 IEC 60079-7: 2001 - EN 60079-11: 2007 IEC 60079-11: 2006 - EN 61241-0: 2006 IEC 61241-0: 2004 - EN 61241-1: 2004 IEC 61241-1: 2004

Methane and Propane reference gas, metrological performance:

- EN 61779-1 and EN 61779-4 of January 2005 Electromagnetic Compatibility:

- EN 50270 of April 1999

- Operating Zones:

- the equipment is authorized for use in zones 1, 2, 21 and 22 for ambient temperatures between -50°C to + 65°C

- Installation:

- Orientation: the OLCT IR detector must be installed vertically, with the arrow on the protective cover pointing up.

- Cable inlet: the cable gland must offer IP 66 degrees of protection in accordance with EN 60529 or IEC 60529 and adapted to the operating temperature.

8.2 Operating security

The detector OLCT IR is compliant with EN 50402 for SIL 2 capability by INERIS for, CH4 and HC versions (Certificate INERIS 03ATEX0141X/02). This normative in force since 2005 is dedicated to electrical devices for gas detection and monitoring (flammable, toxic and oxygen) and states the minimum requirement for the gas detection fixed system security. The detector OLCT IR was developed in conformity with the safety standard IEC 61508. The safety function of the OLCT IR is the detection of combustible gases by infrared absorption technology and a 4-20mA output, current proportional to the gas concentration as a percentage of the LEL, respectively from 0 to 100% LEL. In case of default, the output will fall-back position with a current less than or equal to 1 mA or greater than or equal to 23mA. Frequency of periodic test ?DU PFDavg SFF DC SIL capability 1 year 3.5 10-7 1.6 10-3 90% 72.3% 2 ?DU : failure rate per hour PFDavg : probability failure on demand SFF : safety failure fraction DC : fraction between dangerous failures rate and total failures rate.

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- Wiring/ Connections:

Wiring must comply with the prevailing regulations for installations in explosive atmospheres, notably the IEC/EN 60079-14 and IEC/EN 60079-17 standards. The cables must have mechanical protection.

When conductors are connected to the terminal, the distance between live components and grounded metal components must be greater than 2.5mm.

- Grounding:

The detector must be connected to the ground with the external ground connection with corrosion protection.

- Power supply:

Voltage at detector terminals = 30 VDC max, 16 VDC min. Max power = 5.8 Watts

- Replacing screws:

If you need to replace a screw from the anti-combustion component of the support structure, use an A4.70 or higher quality screw.

- Dusty atmospheres:

When using the equipment in dusty, explosive atmospheres, the equipment should be thoroughly cleaned on a regular basis to prevent the build up of dust. The maximum thickness for dust buildup is less than 5 mm. The support/sensor and support/metal cover joints must be covered in paraffin-type oil. Transfer curve and power supply parameters The following curve shows the output current value for the OLCT IR transmitter in relation to the concentration of gas, special maintenance statuses and faults. In the event that the user connects the transmitter to a non-ISC OLDHAM central controller, the user must ensure that the OLTC IR transfer curve is comparable to the central controller input characteristics to correctly interpret the data coming in from the transmitter. In addition, the central controller should provide a power supply of 16 to 32 VDC to the detector terminals, with intermittent point current at 500 mA. The maximu m length of the connection cable is determined in relation to the above characteristics.

0 %

100 %

20,0 mA

4,0 mA 2.4 mA

Concentration En % LIE

Sortie Courant en mA

Défaut

23,2 mA

Défaut

1.2 mA

Mode Maintenance

120%

-10 %

Hors gamme

Défaut

2.0 mA

Concentration in % LEL

Output Current in mA

Fault

Fault Fault

Out of range

Maintenance mode

21

99 .. MM AARRKKII NNGG::

OLCT IR Markings

Markings appear in the form of stickers applied on the cover of the connection case. The marking must include the following information:

• On the connection case cover

INDUSTRIAL SCIENTIFIC-OLDHAM CE0080 OLCT IR

II 2GD Ex d e ia IIC T4 Ex tD A21 IP66 T135°C Amb. Temp -50°C 65°C U max.: 38 V P max.: 5.8 W IECEx INE 07.0005X INERIS 03ATEX0141X serial number manufacture year Warning: Disconnect power supply before opening

• By the mirror

Ex e II T4 U max.: 38V P max.: 0.875W

• On the metal body

Ex d IIC T4

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1100 .. MM AANNUUFF AACCTT UURREE RR’’SS DDEECCLLAARRAATT IIOONN OOFF CCOONNFFOO RRMM IITT YY

23