HOT! Online explosion-proof gas alarm detector

Specifications Gas detector of Imported sensors

120dB visual&audible alarm

3+2 LED display

4-20mA /RS485 output

Sensor lifetime readable

  GQB-200A9  Online explosion-proof gas alarm detector   Performance and characteristics   Detect all kinds of gases Sensor lifetime readable Multi-sensor design, applied for extreme environments Importing sensor with original package Double-window LED display with 3+2 digits High brightness LED instruction( clearly seen in 10 meters) Output of 4-20mA,Rs485( optional) All stainless steel of shell, 120dB sound with explosion-proof sound&light alarm    Qualifications 1.one patent of practical new technique. 2.two patents of appearance technique. 3.fire control type approval of the ministry of public security. 4.National explosion-proof electric inspection.   Characteristics of sensor 1.plug and play 2. High concentrations protection (applies only to catalytic sensor) 3. High precision & wide range hardware VGA (variable gain amplifier) avoids the sensitivity decrease brought only by software amplification. 4. Each probe contains a extra temperature sensor to compensate the impacts to gas sensor by temperature. 5. Artificial intelligence compensation technology makes reading more smooth and stable. 6. Sensor lifetime system from the viewpoint of sensor helps the user know whether the sensor need to replace or not. 7. Double output of current completely satisfy the requirements of Dual-use machine.   The compound gas transmitter of GQB-200G9 is applied for semiconductor, catalytic combustion, electrochemistry, nondispersive infrared and PID sensors
Technical parameters

Sensor type	Catalysis sensor
Operating current	<400mA
Operating voltage	DC24V±5V
Signal outputs	4-20mA,RS-485(optional)
display	3+2 LED display 3-color LED status light
Relay output	AC220V/5A DC24V/5A
Detection gas	Combustible and toxic gases
Detection range	0-100%LEL
Alarm concentration	adjustable
T90	<15s
Detection precision	3%
Zero drift	2%/year
Lifetime of detector	>3year
Allowable application areas	Hazardous location zone I
Alarm of sound & light	120dB red color alarm
Ambient condition	Outdoor usage
Relative humidity	10~95%RH(Non condensation)
Atm press	86~106Kpa
Operation temperature	-40ºC~+70ºC
Storage temperature	-40ºC~+85ºC
Transmission cable	Three-core shielding line; Wire diamete 1~1. 5 mm2
Transmission range	within 2Km
Electric connector	M20*1.5(cast aluminium) G3/4(stainless steel)
Explosion-proof grade	ExdIICT6
weight	2.5kg(cast aluminium) 4kg(stainless steel)
Protection grade	IP65