Gas H2S alarm explosion proof toxic gas detector

Chemical security H2S gas detector.
Features:
Display the concentration of the detected gas.
Fault alarm, high and low alarm.
Field screen display, including backlight, the characters are larger and clearer, and when the device alarms, the backlight turns red.
Infrared remote control input, no need to open the cover, more convenient.
Support three different sound and light outputs, corresponding to fault,low report and high report respectively.
Zero adjustment, calibration and test functions.
Output DC4-20mA standard signal.
Support485, two bus, LoRa, flexible and changeable communication methods.
Equipped with high-performance ARM microprocessor for easy operation.
Three-way relay (250V5A) output, automatically open the fan and solenoid valve.
It can store40 high and low alarm records in a cycle.
The toxic gas detector can realize the conversion between mg/m and μ mol/mol.

Specification:
Power Power supply24V;flammable: ≤4W; oxygen/toxic: ≤3W

range Flammable:(0-100) %LEL;Oxygen/Toxic: (0-1000) μmol/mol
(determined by sensor)
precision ±5%FS (determined by sensor)

Minimum Flammable: 1%LEL; Toxic: 0.1 μmol/mol (determined by sensor)
reading
Response time Toxic:≤60seconds; flammable :≤30 seconds

Sensor life 36months(determined by sensor)
Sensor type Combustible:catalytic combustion type; toxic:electro chemical type
(imported sensor)
Detection Diffusion
method
Way of long-term continuous work
working
Connection M20*15malethreadexplosion-proofhose
method
Contact output Passive contact Capacity 5A/220V(3)

Explosion- Ex d IICT6 Gb/Ex tD A21 IP67 T80℃
Proof mark
Protection IP67
class
Ambient Flammable: -40～70℃,15%～95%RH;
temperature Toxic: -20～60℃;15%～95%RH
and humidity

weight ≤2kg

Transmission ≤1200m(485 only ,two buses,4-20mA)
distance
output signal 4-20mA current signal, corresponding to full scale

Replaceable important parts

1.Gas sensor and housing
2.Sound and light alarm light and shell
3.Infrared remote control
4.Supporting circuit board