This product is a combustible gas detection alarm system designed exclusively for the detector head using combustible gas sensor.  The alarm system is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative analysis/measurement for gases.   A combustible gas that leaked into the air is detected by a combustible gas detector head connected to the indicator/alarm system.

As a detection result, gas concentration is displayed on the LCD (bar meter display (green and red)).

Gas concentrations are displayed in different colors according to danger levels, i.e., in green when the alarm setpoint is not exceeded, and in red if the alarm setpoint is reached or exceeded.  The alarm system is equipped with the gas alarm contacts of two individual outputs "(First gas alarm contact) + (First gas alarm contact [standard] or Fault alarm contact [option])". The base unit provides a common alarm contact, common alarm voltage output (0/6/12 VDC [standard]), contact output for an external buzzer and 24 VDC (load: 10 mA or less) voltage output.  The alarm system can incorporate a UPS (uninterruptible power system) battery to continue gas detection in the event of a blackout.

Structure                                             : 2-point model (per unit), incorporated type

Concentration display                    : LCD (bar meter display (2 colors: red and green))

Individual alarm contact output : No-voltage "a" contact [standard] or "b" contact [option]

(2 contacts) (contact capacity     : 250 VAC 2 A, resistance load)

External output signal                    : 0/6/12 VDC (load current: 10 mA or less) [standard] or 4 - 20 mA DC    (load resistance: 300 Ω or less) [option]

External connection terminal      : 12P Input/output to detector head (4P)

Pump power output (24 VDC) (2P)

Individual alarm contact output 1 (gas alarm) (2P)

Individual alarm contact output 2 (2P)

(gas alarm [standard] or fault alarm [option])

External output signal (2P)

Alarm delay                                        : 2 seconds [standard]

  or up to 60 seconds/1-second increment [option]

Other functions                                                :

Alarm test/ Alarm activation check

Peak gas concentration display -When gas concentration exceeds an alarm setpoint, the peak value of gas concentration is displayed and held on the bar meter.