Instruction Manual Dräger GS2
2
This gas leak detector uses a semiconductor sensor with a high sensitivity to methane and
other combustible gases. Basically, such sensors require a certain warm-up time after
switching on until they show a stable zero signal. The warm-up time is needed to process
substances that have diffused into the sensor during storage of the device. The Dräger
GS2 is designed to be ready for operation in the shortest possible time. The default warm-
up time is 30 seconds. Depending on storage and environmental conditions, the default
warm-up time may not be sufficient. In such a case the Dräger GS2 extends the warm-up
time to up to 300 seconds. If this extended warmup time is still not sufficient, the Dräger
GS2 comes up with an error signal and the sensor is defective.
Leakage Detection
Position the instrument such that the gas sensor is purged by ambient air. By rapproche-
ment to a leak and increasing gas concentration the flashing and ticking rate will increase.
By removing from a leak and decreasing gas concentration the signals will become slower.
If the signals become fast, slower them by a short press on the push-button. The signals
will slow down to 1 time every 2 seconds. With increasing gas concentration the signal rate
will rise. With decreasing gas concentration the zero point will be set automatic.
At a gas leak can be built gas streamers in the ambient air which will be high influ-
enced by air circulation.
Switch off
Switch off the Dräger GS2 by pressing the push-button for a longer time (> 3s). The Drä-
ger GS2 switches off automatically 10 minutes after the last keypress or the last detected
signal.
Changing the batteries
Unscrew the battery case. Insert the new micro-batteries (AAA) in the battery case. The
positive pole should show to the gas sensor. Screw up the battery case.
In doing this the Dräger GS2 will switch on automatic.
Function test of the leakage detector
Hold a gas lighter close to the gas sensor, let gas escape out of the lighter without a flame
burning. The signal rate should increase.
Trouble-shooting
Problem
Cause
Remedy
LEDs light after warm up for
sensor defect send to service
10 seconds, after that the
instrument switches off
LEDs light for 2 seconds and
calibration fault instrument runs with basic
than are off for 2 seconds
value (reduced sensitivity)
before warm up
send to service
Instrument cannot be switched on
batteries empty change batteries
