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Idiomas disponibles
Idiomas disponibles
Technical characteristics of the "Gas Sentinel" gas leak detectors
If gas leaks occur in a room, the percentage of gas increases until reaching a limit concentration
known as LEL = Lower Explosion Limit. When such concentration is exceeded, a minimum cause of
striking, such as the spark produced by a switch, is sufficient to cause an explosion.
The "Gas Sentinel" gas leak detectors measure the concentration of the gas to be monitored. When a
certain threshold is exceeded, these detectors activate an audible and visual alarm while they shut off
the gas supply by acting on a solenoid valve which may be connected to the detectors.
If a solenoid valve has not been connected, the "Gas Sentinel" electronic gas leak detectors still give
an audible and visual alarm when the gas concentration exceeds the selected threshold level.
All this occurs long before the gas concentration reaches hazardous levels. However, depending on
the olfactory sensitivity it could be possible for an individual person to perceive the odour of an
odourant added to the gas, before the detector gives the alarm.
The "Gas Sentinel" gas leak detectors are provided with an alarm threshold (at 10% of the LEL). After
linking via serial communication, they can provide simultaneous monitoring of up to 11 rooms (1 main
gas leak detector = master + 10 secondary detectors = slaves) while they allow use of normally open
or normally closed solenoid valves; make sure that the type of solenoid valve used is in accordance
with the provisions of the law of the country where the gas leak detector is installed.
N.B. In the event of power supply failure, or incorrect connection or faulty operation of the solenoid
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valve, a normally open solenoid valve does not cause interruption in the gas supply.
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