Jablotron

GS-133 Gas Detector

The GS-133 detects all mixtures of air and combustible gas (Natural Gas, Methane, Propane, Butane). The detector detects two levels of gas concentration. (12V DC)

Gas Detector

GS-133 Gas Detector

The main GS-133 features are: high reliability and sensitivity, compact size and long stability & lifetime.

Detector specifications

Methane Propane Iso-butane
first level 10 ± 3% LEL (0.50% vol) 18 ± 3% LEL (0.30% vol) 23 ± 3 % LEL (0.30% vol)
second level 18 ± 3% LEL (0.80% vol) 30 ± 3% LEL (0.50% vol) 40 ± 3 % LEL (0.50% vol)
LEL = Lower explosive limit (100%) according to IEC 60079-20-1: for methane 4.4% volume concentration for propane 1.7% vol, for iso-butane 1.3% volume concentration, calibrated in the production of iso-butane
Power supply DC 12V ± 20%
Current consumption standby 100 mA
closed relay 150 mA
Beep 94 db / 0.3 m
Relay Output 250 V / 5 A (selectable response to the 1st or 2nd level)
Capacity of relay contactsmax. 230 V / 5 A
Operational temperature -10 °C to +40 °C
Relative humidity 25 to 75%
Storage temperature -20 °C to +50 °C
Stabilization time 90 s 
Response timemax. 20 s
Detection method catalytic combustion
Housing IP 30 (EN 60 529)
Equipment lifespan min. 5 years
Designed to operate at normal atmospheric pressures 86 to 106 kPa
Meets EN 50194-1, IEC 60079-29-1, IEC 50130-4, EN 55022
Intended for non-explosive areas - Zone 2 EN 60079-10

Note: Not suitable for use with hydrogen

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