Operating Manual PG11 / PGE11 Page 23
5.1.2 PG11 Function check with the “Gas Test kit”
Using the Gas Test kit Gas Free, the Safety Function of the Gas Detector can be verified without the need of
a bottle of test gas. The Gas Free Test kit comes in several types rated for different gases and with specified
gas values. For example, to perform a Function test of an Alarm level at 30 %LEL for Methane gas, select a
Gas Free Test kit rated for Methane and a gas concentration higher than the required Alarm level. Please
see chapter 11 for an overview of the different types of Gas Free Test kits.
Requirements:
1. Gas Free Test kit.
Procedure:
1. Remove the Environment Shield if the detector is fitted with such.
2. Verify that the Gas Free tester is rated for this Gas Detector.
3. Insert the Gas Free tester into the sensor section of the detector.
4. Observe that the detector indicator is showing gas alarm or that a gas response is received at the
site gas detection system.
5. With a response according to specification of the Gas Free tester the Gas Detector has passed the
test.
5.1.3 PG11 Function check using the “Gas nozzle”
This procedure is used for gas testing of detectors mounted high up or in another not easily reachable
location. Kit consists of a “
Gas nozzle
” on the nose of the detector. In between the Gas nozzle and Gas test
box there will be a gas pipe to allow for the gas to flow from the Gas test box and into the Gas Detector
through the Gas nozzle.
Requirements:
● Gas nozzle (if not already fitted)
● PG11 should be fitted with the Environment Shield especially if there is any wind.
● Gas cylinder with same type of gas as Detector is rated to detect
○ Concentration of test gas shall be above 40%FS
○ Flow rate of minimum 2 liters/min.
● Flexible gas hose
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