Combustible gas and toxic gas detectors
Compliant with the latest national standards and obtained qualifications such as CMC measuring instrument production license and explosion-proof certification
Can be used in various harsh situations
Equipped with water vapor filtration and protection functions, it can effectively prevent sensor damage caused by high humidity environments on site


Explosion proof design ◇ Sturdy texture
• It has concentration alarm and control functions, and automatically outputs an alarm signal when the gas concentration exceeds the allowable value of the national standard
• With powerful circuit protection function, your device is no longer easily damaged and can work normally in harsh environments
Explosion proof, lightning proof, anti-static, anti reverse connection, anti electromagnetic interference, anti pulse current impact

Multiple transmission methods
Multiple signal outputs available: 4-20mA RS485、 Switching signal
Multiple transmission methods to choose from: 3-4 core cable, fiber optic GPRS wireless transmission RTU wireless transmission
Multiple data reception methods: user computer, control alarm, PLC, DCS, etc
Technical Parameter
- Gas detection:Nitrogen oxides (NOx), Imported high-performance electrochemical nitrogen oxide sensors
- Measurement range:0-20, 100, 500, 1000, 2000, 5000ppm optional
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resolving power:0.01ppm(0~100ppm); 0.1ppm(0~1000ppm); 1ppm (above 1000ppm)
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Response time:≤ 20 seconds (T90)
Detection accuracy:≤± 3% (depending on the specific sensor)
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Linear error:≤±1%
Zero drift:≤± 1% (F.S/year)
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Recovery time:≤ 20 seconds
Repeatability:≤±1%
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Protection level:IP66
Explosion proof certification:CNEx16.0547
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Detection method:Diffusion, circulation, and pump suction options are available
- Installation method:Wall mounted, pipe mounted (thread size: M40X1.5mm)、 flow-through
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Signal output:
① 4-20mA signal: transmission distance of 1km
② RS485 signal: transmission distance of 2Km
③ Switching signal: Standard configuration includes 1 set of relays 1, passive contacts, capacity 220VAC 3A/24VDC 3A -
Transmission method:
① Cable transmission: 3-core and 4-core cables for long-distance transmission (1-2 kilometers)
② GPRS transmission: Equipped with a built-in GPRS module, real-time remote data transmission is possible without distance limitations (optional)
③ Wireless transmission: Supports 433MHz, wireless radio transmission mode, transmission distance 2-10Km, depending on different power levels (optional) - Receiving device:User computer, control alarm, PLC, DCS, etc. are optional
- Alarm method:On site sound and light alarm, external alarm, remote controller alarm, computer data acquisition software alarm, SMS alarm optional
- Shell material:Die cast aluminum+sandblasting oxidation/fluorocarbon paint, explosion-proof and corrosion-resistant
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Work environment:
Working temperature -30~50 ℃
Working humidity ≤ 95% RH, no condensation
Working power supply 24VDC (12-30VDC)
Work pressure 0-100Kpa
Electrical interface with 3/4 "NPT internal thread and 1/2" NPT internal thread, supporting two electrical connection methods simultaneously - Size and weight:180 * 130 * 70mm (L × W × H) 1.0Kg (net weight)
- Standard accessories:Instruction manual, certificate of conformity, calibration cover
- Production License:Guangdong System (CMC Metrology Certification)
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Execution standards:
GB3836.1-2010 Explosive Atmosphere Part 1: General Requirements for Equipment
GB3836.2-2010 Explosive Atmosphere Part 2: Equipment Protected by Flameproof Enclosures "d"