Single point wall mounted gas alarm detector is designed aimed at gas detecting and alarming under the various non-explosion-proof conditions. The equipment adopts imported electrochemical sensor, which is more accurate and stable. Meanwhile, it is also equipped with 4 ~ 20mA current signal output module and RS485-bus output module, to internet with DCS, control cabinet Monitoring Center.
1. Technical parameter
2. Output wire of relay
This style gas detector provides two relay outputs, one is normally open and another is normally closed. When gas concentration exceeds the alarming threshold, the relay in the device will switch on/off, and users could connect linkage device such as fan,solenoid valve etc. The reference picture is shown in Figure 1. Dry contact is used in the inside battery and device need to be connected in the outside, pay attention to the safe use of electricity and be careful of electric shock.
Figure 1: schematic view of the normally open
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