Fixed industrial gas detector CRH-80

Model:	CRH-80
Brand:	Royal Hope
Origin:	Made In China
Category:	Electronics & Electricity / Electronic Instrument / Analysis Instrument
Label:	gas detector , fixed gas detector , industrial gas detec
Price:	US $158 / pc
Min. Order:	1 pc

Inquire Now

Product Description

Description

Gas detector CRH-80 series is a new type gas combustible or toxic gas detector which used high performance gas sensor and microcontroller technology. It has following advantages: good repeatability, high resistance to humidity-temperature jamming, long performance life and simple operation. It is applied to inspection for combustible or toxic gas concentration in industrial environments.

It can translate the combustible gas concentration signals into electric current signals or digital signals for outputting and transmitting. It adopted three-wire (4~20mA signals output) or four-wire (RS485 bus output) system, remotely examine the detection result through the monitor or controller. Common applications is gas safety inspection and alarm for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, medical industry, labs, etc.

Features:

l High sensibility, rapid response, short polarization time;

l 4-20mA standard analog signal or RS485 digital signal output;

l Two-level passive contact output;

l Infrared remote controller operation (remote controller is optional part);

l Possible to connect to DCS system directly;

l Explosion-proof design complies with the requirement of applying in Zone 1,2.

Technical Specifications

Applicable Gas	Combustible gas or toxic gas
Detecting Range	Referring to the targeting gas list
Alarm Threshold	Adjustable
Sampling	Diffusion
Sensor Type	Catalytic combustion sensor for combustible gas Electrochemical sensor for toxic gas Infrared sensor for carbon dioxide gas
Sensor Life	3 years for catalytic combustion sensor and electrochemical sensor; 5 years for infrared sensor.
Response Time (T90)	≤30s
Operating Environment	Temperature: -40℃~70℃ (catalytic combustion sensor) -20℃~50℃ (electrochemical sensor) Humidity: ≤95%RH (non-condensing) Pressure: 86kPa~106kPa
Working Voltage	DC 24V±6V
Power Consumption	≤3W
Output Signals	Three-wire system 4~20mA standard signals output; Four-wire system RS485 signal output (optional); Contact relay output.
Installation Means	Wall mounted
Transmission Distance	≤1000m
Explosion-proof Type	Explosion insulating
Explosion-proof Index	Ex d IIC T6 Gb
Protection Grade	IP65
Install Screw Thread	M20*1.5 (Female Screw)
Cable	RVVP 1.5mm2×3 or RVVP 1.5mm2×4
Transmit Distance	≤1000m
Dimension	180 mm×140 mm×80 mm
Weight	About 1Kg

Targeting Gas List

Gas	Detecting Range	Alarm Threshold	Sensor Type
NH3	0-100 PPM	25 PPM / 50 PPM	Electrochemical sensor
Cl2	0-50.0 PPM	10 PPM / 20 PPM
H2	0-1000 PPM	50 PPM / 100 PPM
CH2O	0-100 PPM	25 PPM / 50 PPM
O2	0-30.0%vol	18.5%vol / 23.5%vol
H2S	0-100 PPM	10 PPM / 20 PPM
HCl	0-30.0 PPM	5.0 PPM / 10.0 PPM
HCN	0-50.0 PPM	5.0 PPM / 10.0 PPM
PH3	0-20.0 PPM	0.3 PPM / 0.6 PPM
HF	0-10.0 PPM	3.0 PPM / 6.0 PPM
NO	0-250 PPM	25 PPM / 50 PPM
CO	0-500 PPM	35 PPM / 70 PPM
SO2	0-20.0 PPM 0-2000 PPM	2.0 PPM / 10.0 PPM 10 PPM / 20 PPM
ClO2	0-50.0 PPM	0.3 PPM / 0.5 PPM
NO2	0-20.0 PPM	1.0 PPM / 2.0 PPM
C2H4O	0-100 PPM	10 PPM / 20 PPM
O3	0-20.0 PPM	5.0 PPM / 10.0 PPM
CH4	0-100%LEL	25%LEL / 50%LEL	Catalytic combustion sensor
C3H8	0-100%LEL	25%LEL / 50%LEL
H2	0-100%LEL	25%LEL / 50%LEL
NH3	0-100%LEL	25%LEL / 50%LEL
C2H4O	0-100%LEL	25%LEL / 50%LEL
CH3CH3	0-100%LEL	25%LEL / 50%LEL
C2H4	0-100%LEL	25%LEL / 50%LEL
C4H10	0-100%LEL	25%LEL / 50%LEL
C4H8	0-100%LEL	25%LEL / 50%LEL
C7H8	0-100%LEL	25%LEL / 50%LEL
CH4O	0-100%LEL	25%LEL / 50%LEL
C2H6O	0-100%LEL	25%LEL / 50%LEL
C3H4O	0-100%LEL	25%LEL / 50%LEL
C2H7N	0-100%LEL	25%LEL / 50%LEL
CH3Br	0-100%LEL	25%LEL / 50%LEL
CO2	0-10.0%vol	1.0%vol / 3.0%vol	NDIR infrared sensor
CO2	0-5000ppm	800 PPM / 1500 PPM
CH4	0-5.0%vol 0-100%vol	1.0%vol / 3.0%vol 5%vol / 10%vol
VOC	0-300ppm	customized	PID sensor