Description:
Gas detector CRH-80 series is a new type gas combustible gas detector which used high performance catalytic combustion 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 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, 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
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Applicable Gas
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Combustible gas (methanol)
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Detecting Range
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0-100%LEL
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Alarm Threshold
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Adjustable in PLC or DCS or the control unit
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Sampling
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Diffusion
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Sensor Type
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Catalytic combustion sensor
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Sensor Life
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3 years
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Response Time (T90)
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≤30s
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Operating Environment
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Temperature: -40°C~70°C;
Humidity: ≤95%RH (non-condensing);
Pressure: 86kPa~106kPa
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Working Voltage
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DC 24V±6V
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Power Consumption
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≤3W
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Output Signals
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Three-wire system 4~20mA standard signals output;
Four-wire system RS485 signal output (optional);
Contact relay output.
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Installation Means
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Wall mounted
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Transmission Distance
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≤1000m
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Explosion-proof Type
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Explosion insulating
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Explosion-proof Index
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Ex d IIC T6 Gb
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Protection Grade
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IP65
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Install Screw Thread
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M20*1.5 （Female Screw）
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Cable
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RVVP 1.5mm2×3 or RVVP 1.5mm2×4
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Transmit Distance
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≤1000m
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Dimension
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180 mm×140 mm×80 mm
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Weight
<a href="http://gasdetector-china.com/">Further information about this product, please visite our website</a>
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About 1Kg
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