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Page 6     Technical Status: 11/2010

Gas Detector

Operating and Installation Instructions

ExDetector HC 150 / HC 150-K

0,4-2V

Br

N

V

Br

4
5
6

Replacing the Sensor

Please note:
Sensors may only be replaced by specialist personnel authorised to do so by
Lang. Do not open the housing when the power supply is switched on!

locknut

seal ring

sensor

Procedure:

Switch off the power supply to the detector

Remove the housing cover

Disconnect the leads from terminals 4, 5 and 6

Undo the locknut

Unscrew the sensor

Screw the replacement sensor in.
Make sure the sealing ring is correctly seated.

Screw the locknut on (serrations towards the housing wall)

Connect the leads according to their markings

Replace the housing cover

Switch on the power supply

Calibrate the detector

Spare Parts

Replacement sensor for ExDetector HC 150 D1

Replacement sensor for ExDetector HC 150-K D1

Summary of Contents for ExDetector HC 150

Page 1: ...Gas Detection and Warning Systems Operating and Installation Instructions ExDetector HC 150 ExDetector HC 150 K...

Page 2: ...collection point and a possible ignition source Consider the density of the gas For gases with a lower density than air for example methane the detector must be located above a possible leakage point...

Page 3: ...sing in the presence of an explosive atmosphere Terminal Assignment Max outside diameter of cable 10 mm Three core cable with screen Terminal assignment 24VDC 4 20 mA GND 0 4 2V Br N V Br 4 5 6 1 2 3...

Page 4: ...on hazard Ex RL Rules for avoiding dangers from a potentially explosive atmosphere with a collection of examples Explosion Protection Rules Example Connection to GMC8022 Screening The screen is to be...

Page 5: ...or the voltage reading to stabilise Adjust the Br potentiometer until the voltmeter reads 0 mV Setting the base current to 4 mA Connect the voltmeter at the 0 4 2V socket Wait for the 0 4 2V voltage s...

Page 6: ...ing sensor Procedure Switch off the power supply to the detector Remove the housing cover Disconnect the leads from terminals 4 5 and 6 Undo the locknut Unscrew the sensor Screw the replacement sensor...

Page 7: ...ust be observed Further relevant standards DIN EN 60079 14 Electrical apparatus for explosive gas atmospheres Electrical installations design selection and erection DIN EN 60079 17 Electrical apparatu...

Page 8: ...ctor HC 150 HC 150 K Bieler Lang GmbH Gas Detection and Warning Systems PO Box 1129 D 77842 Achern Oberkirchstr 19 21 D 77855 Achern Telephone 49 0 78 41 69 37 0 Telefax 49 0 78 41 69 37 99 E mail inf...

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