GRI-8525 Wall-mounted  CH4 Detective Alarm 

Product Introduction : 

     GRI-8525 series single point wall-mounted  CH4 detective alarm is an apparatus which can continuously detect  CH4 concentration in operate environment .can online monitor the concentration of  CH4.

     The  CH4 detective alarm is natural diffused gas detective way, adopt Switzerland Membrapor  imported electrochemical sensor as the sensitive component, with high sensitivity and excellent repeatability; Highlight LED backlit plus LCD display screen real-time display the concentration of leakage gas , Exceed pre-set alarm point immediately start sound and light signals and replay control signals; international standard 4-20mA signal can directly connect DCS system of factory ,connect RS485 digital signal and factory PC .

Product Feature:

Imported NDIR infrared module ,performance stable and reliable ; 

Provide LCD display and sound and light alarm , Full-featured;

Intelligent design , zero , alarm setting ,calibration is very convenient ;

Two alarm replays can output control signal for use to drive fans and other equipment;

Apparatus DC9-24V wide range power supply (use power adapter can connect AC 220V),can be          use once connect the power supply ;

Metal shell, robust and reliable ;

Infrared remote control ,more convenient for setting ,modifying the parameters of apparatus ; 

Have standard 4-20mA current signal and RS485 digital signal output.

Application:

    Hot-air balloon and spacecraft measurements, remote monitoring network, detection of the urban environment, personal exposure and detection of the working environment, industrial processing applications. 

Technical parameter :

Product name Single point wall-mounted  CH4 detective alarm

Sensor name Electrochemical  CH4 sensor  

Product model GRI-8525

Sensor model CH4/C-XX(range optional )

Input power supply 9-24VDC

Test object   CH4

Current consumption 20-200mA

Test principle Electrochemical 

Display way LCD  display screen

Test way                  Diffused /Pipe type 

Alarm way 2levels sound and light alarm

Test range 0-1000/5000ppm

Alarm error ≤±5% alarm set value

Accuracy                 ±5%FS

Operate temperature -20℃-45℃

Resolution Optional 

Operate humidity 15-90%RH(non-condensing )

Pre-heating time 1 Min

Pressure range Atmospheric pressure ±10%

Response time T90≤60S

Signal output 4-20mA or RS485

Use life                  2year (in the air)

Contact capacity 1A/120VAC or 1A/24VDC

Zero drift                     ≤±2%FS/6h 

Repeatability ≤±2%FS

Span drift   ≤±5%FS/6h

Note: above part of sensors parameter please standard as the latest technical manual of Membrapor O3 sensor.