Statox 560
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GOMMR Monitors The detector testing itself with gas Statox 560 Trustworthy Gas Detection

Why Self Test? The everyday reading on a gas detector is “zero”. Most industrial plants operate in normally gas – free atmosphere. It is vital that unusual conditions cannot go un­ noticed. As a rule, a zero reading can always be caused by two reasons, either the gas concentration is really zero, or the gas detector has failed. Functional Safety Gas detectors designed to ensure worker safety, is selected to comply with functional safety standards. These are rated in SIL levels (SIL = safety integrity level). This level depends on the pfd­(= probability of failure on demand) and the sff (=...

How the self - test works In programmable time intervals the following procedure starts: The sensor head activates a gas generator. This generator produces a tiny amount of the target gas. A micro pump feeds this gas in front of the sensor. Now the sensor must respond within a certain time window to the gas present. As soon as the signal is within specifications, the gas generator switches off, and the system is purged until the signal is zero. This self – test takes less than 2 minutes. Of course the test does not start, when gas is present in the surrounding air, or other environmental...

Product name: GOMHJR Monitors COMPUR Monitors GmbH & Co. KG WeiRenseestraRe 101 D-81539 Munchen