Wall Mounted Gas Detector

GRI-8504 Wall-mounted Ex Detective Alarm

Product summarize ：

     GRI-8504 Wall-mounted Ex Detective Alarm is an apparatus which can continuously detect Ex gas concentration in operate environment .can widely used in factory ,office and warehouse and other site environment , online monitor the concentration of toxic gas .

     The Ex gas 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:

     Petroleum and petrochemical industrial, iron and steel, medical, fire rescue, various types of industrial safety monitoring, detection of dangerous substances

Technical parameter ：

Product name Single point wall-mounted Ex detective alarm

Sensor name Optional (electrochemical sensor )

Product model GRI-8504

Sensor model Optional (Membrapor C series )

Input power supply 9-24VDC

Test object   Optional (poisonous)

Current consumption 20-200mA

Test principle Electrochemical 

Display way LCD display screen

Test way Diffused /Pipe type 

Alarm way 2 levels sound and light alarm

Test range 100%LEL  

Alarm error ≤±5% alarm set value

Accuracy ±5%FS

Operate temperature -10℃-40℃

Resolution

Operate humidity 0-85%RH(non- condensing )

Pre-heating time 1 Min

Pressure range 860-1060hpa

Response time T90≤30S（Majority ）

Signal output 4-20mA or RS485

Use life 2 year (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 corresponding sensor.