Continuous detection of flammable gases in explosion hazardous area with flame proof structure Self diagnosis function with built-in Microprocessor Easy replacement with a cartridge type sensor Digital flow sensor to maintain regular flow rate Fast response of VOC gas leakage with a high efficient pump inside Detection gas from low to high concentration owing to various detection principle Stable quality and proved detection principle for service life Auto calibration and program setting with a magnet bar 4-digit digital gas concentration display 4-20mA (Current source or Sink) output signal Easy configuration of monitoring system by RS-485 Modbus communication 3-wire connection for signal & power 2-stage alarm, 1-trouble display and relay contact output Calibration and maintenance by one-man

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