GasSecure GS01
Hardware Manual
20
C
HAPTER
4
4.
OPERATION
The GS01 has no user adjustable parts. Do not open the instrument. Opening the
GS01 detector voids the warranty issued by the manufacturer.
4.1
Normal operation
After provisioning the GS01 detector with an ISA100 Wireless™ gateway, it will
perform the following tasks:
•
Measure gas concentration
•
Publish gas concentration to the gateway
•
Publish other diagnostic information to the gateway
4.2
Proof test (Validation)
Referring to Section 3.5, note that the GS01 is set to detect gas on a % LEL scale
either according to IEC60079-20 or to NIOSH.
Although no re-calibration of the GS01 is necessary, it is recommended to check
the response of the detector at least every second year by applying pressurized
test gas.
The weather cap is designed for validation, as it includes a 6 mm diameter tube
fitting for efficiently filling the GS01 measuring cell with a test gas mixture. Note
however that the test gas will leak out during testing and leakage will depend on
the wind speed. Therefore, the measured gas concentration is normally lower than
stated on the test gas cylinder. It is not recommended to carry out validation in
stronger wind, or alternatively the weather cap has to be covered on the outside
for example by applying tape to the openings.
The function of the detector is positively validated as long as it responds to the
test gas.
Please refer to Table 4-1 for the recommended gas mixtures and expected
instrument readings. Apply the test gas through a 6 mm tube from a gas cylinder
with pressure regulator. It is recommended to adjust the flow to at least 5 L/min.
