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2-1

OPERATION

2.1 OPERATING PROCEDURE

CAUTION: The GMI PS200 instrument can be supplied with

a ammable gas sensor. This sensor is designed

for use in concentrations of gas not exceeding

the Lower Explosive Limit (LEL). Exposing the

sensor to high concentrations of ammable gas

above the LEL can cause damage to the sensor

and inhibit its proper operation. The GMI PS200

has an inbuilt safety alarm feature to prevent

this. Refer to ALARMS section of this handbook

for details.

Check the following before use:

• The PS200 instrument is clean and in good condition.

• The hydrophobic and inlet lters are clean and in good

condition.

• The sample line (pumped instruments) and any other

accessories used are in good condition and leak-free.

• Switch instrument ON in fresh air and check that the

battery is fully charged.

• Verify there are no faults.

• Attach optional accessories, as required.

• All gas ranges are operational and the instrument is

zeroed.

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GMI PS241 Specifications

General