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Home > Test & Measurement > Gas Detectors

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Fixed Carbon Monoxide (CO) Gas Detector, 0 to 100/500/1000 ppm

$486.77

Fixed CO gas detector monitors the carbon monoxide concentration and sounds the alarm with remote control, selectable measur

SKU: CHN-GAS-CO-A

Free Shipping Worldwide

Delivery date: 6-12 days

Overview
Documents

Carbon monoxide (CO) gas detector is fixed design to monitor the CO gas leak in range of 0 to 100/500/1000/2000 ppm for 24 hours in the confined space or pipeline and gives sound and light alarm.

Features

Adopting high precision sensor for accurate gas leak detection.
Equipped with 3-wire system 4-20mA analog output, relay output, RS485 output (optional).
Compatible with various controlled alarms, PLC, DCS and other control system, and can be remote monitored.
Explosion-proof design, fast, relaible and stable.
Infrared ray controller can remote control the alarm point settings, zero calibration, and address modification.
Two-stage alarm with sound and light, and the alarm point is settable.
With self-calibration function, and three standard keys will be used to realize on-site maintenance.
Can output one or two on-off signals, can drive ventilator, solenoid valve or other external devices.

Specification

Model	CHN-GAS-CO-A
Detection Principle	Electrochemistry
Gas	Carbon Monoxide (CO)
Range (Optional)	0 to 100 ppm, 0 to 500 ppm, 0 to 1000 ppm, 0 to 2000 ppm
Resolution	0.01ppm, 0.1ppm, 1ppm (related to the selected range)
Accuracy	≤±3% F.S.
Responce Time	≤10s
Repeatability	≤±1%
Recovery Time	≤10s
Linearity Error	≤±1%
Zero Shift	≤±1% (F.S./year)
Signal Output (Optional) ^Note	4-20mA, or RS485 (transfer card included); Relay output: one group of relay output (1NO+1NC, 24V 100mA) for one alarm (default), or two groups of relay output (2NO+2NC, 24V 100mA) for high/low alarm (optional).
Alarms	Sound, light
Display	High light nixie tube display
Installation	Wall-mounted, piping type, flow-type (according to the detected environment)
Connection	G1/2 male thread explosion-proof flexible pipe
Operating Time	24h
Explosion-proof Grade	Ex d llC T6
Protection Grade	IP65
Certification	CE, ATEX
Working Voltage	12~36V DC
Case Material	Die-casting aluminum housing
Operating Temperature	-20℃~50℃
Operating Humidity	0~95%RH (non-condensing)
Dimension	20617990mm
Weight	≤1.6kg
Accessories	Power adapter: Input 100-240VAC 50/60Hz, Output 24VDC 2A (Optional USA plug & Europe plug)

Note: The output signal 4-20mA and RS485 CANNOT be used at the same time.

Fixed Gas Detector Dimension (Unit: mm)

Other Common Gases and Ranges Available for Fixed Gas Detectors

Gas	Range (Default)	Range (Optional)	Resolution
Flammable Gas (EX)	0-100% LEL	0-100% LEL	1%LEL
Oxygen (O2)	0-30% Vol	0-25% Vol	0.01%Vol
Hydrogen Sulfide (H2S)	0-100 ppm	0-50/100/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Methane (CH4)	0-100% LEL	0-100% LEL	1%LEL
Ammonia (NH3)	0-100 ppm	0-100/200/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Chlorine (Cl2)	0-10 ppm	0-10/20/50/100 ppm	0.01ppm/0.1ppm
Hydrogen Chloride (HCL)	0-20 ppm	0-10/20/50/100 ppm	0.01ppm
Hydrogen (H2)	0-1000 ppm	0-1000/2000/5000/10000 ppm	0.1ppm/1ppm
Nitric Oxide (NO)	0-100 ppm	0-100/250/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Nitrogen Dioxide (NO2)	0-20 ppm	0-20/50/100 ppm	0.01ppm/0.1ppm/1ppm
Formaldehyde (CH2O)	0-10 ppm	0-10/20/-50/100 ppm	0.01ppm/0.1ppm/1ppm
Ozone (O3)	0-10 ppm	0-1/5/10/20/50/100 ppm	0.001ppm/0.01ppm/0.1ppm
Carbon Dioxide (CO2)	0-2000 ppm	0-1000/2000/5000/10000/50000 ppm	0.1ppm/1ppm
Sulfur Dioxide (SO2)	0-20 ppm	0-10/20/100 ppm	0.01ppm/0.1ppm
Ethylene Oxide (ETO)	0-100 ppm	0-20/50/100/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Phosphine (PH3)	0-10 ppm	0-10/20/50/100/200/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Nitrogen (N2)	0-100% Vol	0-100% Vol	0.01%Vol
Hydrogen Fluoride (HF)	0-10 ppm	0-50 ppm	0.01ppm

* Some common gases and the measuring ranges are listed in the above table. For more information, please feel free to contact us.

Tips: Working Principle of Gas Detector Sensors

1. Electrochemical Sensors
Due to the active chemical properties, the testing gases generally have reducibility or oxidizability. Electrons are released or absorbed in the chemical reactions and a large number of electrons form a current. The current is proportional to the gas concentration, thus the gas concentration is obtained by measuring the current.

2. Catalytic Combustion Sensors
It works based on the principle that the heat is released from the combustion reaction of a surface combustible gas, namely combustion increases the temperature of the platinum wire coil and thus the resistance of the coil increases. The gas concentration is obtained by measuring the resistance value change of platinum wire. It’s suitable for measuring low concentration combustible gas.

3. PID Photo Ion Sensors
High energy ultraviolet rays ionize the organic gases, and then amplify the current of charged ions on the plate to measure. The current value reflects the gas concentration.

4. Infrared Sensors
Different combustible gas has different absorption ability to infrared ray. The concentration of combustible gas can be measured by detecting the current on the infrared photosensitive component.

5. Semiconductor Sensor
Due to the absorbability of semiconducting materials on gas, change the resistance value of the gas sensitive resistance to judge the existence of gas.

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