Dr ger GS3 Leakage Detector User Manual
- June 10, 2024
- Dr ger
Table of Contents
Instructions for use
General information
Any use of the Dräger GS3 requires a full understanding and strict adherence
to the instructions of this manual and to the national and international
regulations and standards. The instrument is only to be used for the purposes
specified in this manual.
This instruction manual is part of the instrument. Do not dispose of the
instructions for use. Ensure that they are stored and used appropriately by
the product user.
****This product must not be disposed of as household waste. This is
indicated by the adjacent icon. You can return this product to Dräger free of
charge. For information please contact the national marketing organizations
and Dräger MSI GmbH.
Do not throw used batteries into fire or try to open them by force.
Dispose of the batteries in accordance with national regulations.
The leakage detector
The Dräger GS3 is an electronic leakage detector that detects different
combustible gases.
Do not use the Dräger GS3 as monitoring device for your individual safety!
1. gas sensor
2. flashing LEDs| 3. push-button
4. battery case
---|---
Switching on
Switch on the Dräger GS3 by pressing the push-button for a short time (< 1s).
After switching on, the battery capacity will be shown by flashing LEDs:
4 flashes: batteries full
1 flash: batteries empty
The warm up is shown by continuous flashing LEDs.
The readiness for operation is shown by constant flashing LEDs and a constant
ticking (1 x every 2 seconds).
This gas leak detector uses a semiconductor sensor with a high sensitivity to
methane and other combustible gases.
In general, 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
instrument. The Dräger GS3 is designed to be ready for operation in the
shortest time possible. 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 GS3 extends the warmup time to up to
300 seconds. If this extended warm-up time is still not sufficient, the Dräger
GS3 outputs an error signal and the sensor is defective.
Detecting a leak
Position the instrument in such a way that the gas sensor is purged by ambient
air. By rapprochement 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, you
can slower them by shortly pressing the push-button. The signals will slow
down to 1x speed every 2 seconds. With increasing gas concentration, the
signal rate will rise. With decreasing gas concentration, the zero point will
re-adjust automatically.
In case of a gas leak, gas plumes can form in the ambient air that are
heavily influenced by air circulation.
Switching off
Switch off the Dräger GS3 by pressing the push-button for a longer time (> 3s). The Dräger GS3 switches off automatically 10 minutes after the last key press or the last detected signal.
Changing the batteries
Unscrew the battery case. Insert the new AAA batteries into the battery case.
Make sure the positive pole is facing the gas sensor. Screw down the battery
case.
By doing this, the Dräger GS3 will switch on automatically.
Functional test of the leakage detector
Hold a gas lighter close to the gas sensor, let gas escape out of the lighter without igniting the flame. The signal rate should increase.
Troubleshooting
| Problem | Remedy |
|---|
LEDs light for 10 seconds after warm-up, after that the instrument switches
off.| Restart the device.
LEDs light for 2 seconds and then are off for 2 seconds before warm-up.|
Restart the device while in fresh air.
Instrument is not turning on.| Change batteries.
Technical data
| Measuring range | 0 – 10.000 ppm (methane) |
|---|---|
| Sensitivity | <50 ppm (methane), <100 ppm (hydrogen) |
| Warm-up time | norm. 30 seconds |
| Response time | < 2 seconds. (to 10 % L.E.L.) |
| Signal | audio and visual (1 x every 2 seconds w/o gas) |
| Sensor | semiconductor |
| Detectable gases | natural gas, methane, liquid gases, propane, butane, |
gasoline, jet fuel, alcohol, various thinners, acetone, hydrogen
Operating conditions
| Humidity | 10 – 90 % r.F. not condensating |
|---|---|
| Ambient temperature | +5 – +45 °C |
| Storage temperature | -20 – +50 °C |
| Power supply | 2 AAA batteries |
| Battery life | approx. 6 h |
| Dimensions | 170 mm x 16 mm x 19 mm |
| Weight | approx. 50 g |
Service and maintenance
Regular maintenance of the Dräger GS3 is not necessary. To ensure that the instrument is working properly, perform the functional test regularly.
Dräger MSI GmbH
Rohrstraße 32
58093 Hagen
Tel.:02331 / 9584 – 0
Fax:02331 / 9584 – 29
E-mail: msi.info@draeger.com
5695091
Edition 02 – April 2023
Subject to alteration
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