Fixed explosion-proof combustible and toxic gas leak detector

Gas detector monitoring two kinds of gases/120dB spot sound/imported sensor/ connecting 1/2 sensors/4-20mA or RS485 alternative

Performance and characteristics

1 test two different gases simultaneously

2 in the same domestic industry have no this technology application

3 4-20mA, Rs485 main line system (optional)

4 120dB explosion-proof sound-light alarm

5 high brightness LED can be instructed in ten metres away

6 the original imported sensor

7 stainless steel shell

Rs485 and 4-20mA double output can access any field devices Calibrating wihtout open cover and makes operation more convenient.

 Certificates

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.

Characteristic of sensor

1.plug and play any time

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-200A10 is applied for semiconductor, catalytic combustion, electrochemistry, nondispersive infrared and PID sensors and can be used between any two kinds of the above sensors. It’s the first choice of exceeding the imported products and complex gas ambients.

Attention: GQB-200G10 cannot be applied for two catalytic combustion sensors working at the same time.

Technical parameters

Type of sensor	Catalytic combustion sensor		seiicIonductor sensor	Electrochemical sensor		PID sensor		IR sensor
Operating current	<400mA
Working voltage	DC24V±5V
Signal outputs	4-20mA, RS-485(optional)
display	3+2 LED display 3-color LED lights
Relay output	AC220V/5A or DC24V/5A
Detection gas	Combustible gas	Combustible and toxic gas		Toxic gas	TVOC		Combustible gas CO2
Detection range	0-100%LEL	0-100%LEL 0-100ppm		0-100ppm 0-30%vol	0-100ppm		0-100%LEL
Alarm concentration	adjustable
T90	<15s	<15s		<30s	<10s		<30s
Detection precision	3%	1%		1%	1%		3%
Zero drift	2%/year
Lifetime of detector	>3year	>3year		>2year		>1year	>5year
Allowable application areas	Hazardous location zone I&II
Alarm of sound & light	120dB red color alarm
Ambient condition	Outdoor usage
Relative humidity	10~95%RH(No condensation)
Atm press	86~106Kpa
Operation temperature	-40ºC~+70ºC	-40ºC~+70ºC		-20ºC~+50ºC		-20ºC~+50ºC			-40ºC~+70ºC
Storage temperature	-40ºC~+85ºC	-40ºC~+85ºC		-25ºC~+50ºC		-25ºC~+50ºC			-40ºC~+85ºC
Transmission cable	Three-core shielding line for 4-20mA;       four-core shielding line for RS485                     Wire diamete 1~1. 5 mm2
Transmission range	4-20mA≤2Km; RS485≤1.2Km
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 standard  (IP66,IP67 optional)

Fixed explosion-proof combustible and toxic gas leak detector