Settings for the secondary display of Zhonghengan fixed-type toxic gas alarm detectors
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I’m seeking help from experts: Does anyone know anything about Zhongheng An’s gas meter secondary system? Who knows how to set it up? Could someone please teach me? The fixed gas alarm units in our facility use HA8100 gauges from Zhongheng An; their secondary gauge systems are also of their manufacture. The fault light related to the card module keeps on shining, and resetting it doesn’t help – it is said that the device needs to be reconfigured.
Generally, the fault light on the card comes on when the circuit current is less than 4 mA (including the case of an open circuit), or when the circuit current is greater than 20 mA (mainly due to the signal line and common line being connected in reverse). The user can check this first before seeking assistance from the manufacturer.