GMI Personal Surveyor 200, User Handbook Manual, Page: 21 / 92

2-1
2
OPERATION
2.1 OPERATING PROCEDURE
CAUTION: The GMI PS200 instrument can be supplied with
a flammable 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 flammable 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 filters 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.