Fixed carbon monoxide detector RS485 4-20mA
Detection gas:CO,Carbon monoxide
Range:0-1000ppm/0-5000ppm/custom
Detection Principle:Electrochemistry
Resolution:1ppm
Detection Accuracy:±2%F.S
Model:HNAG1000
Product Description
Highlights at a glance
Carbon Monoxide Detector: Intrinsically safe Aluminum alloy detector designed for carbon monoxide concentration monitoring in industrial environments.
Explosion Proof Protection: Explosion proof circuit design with ATEX certification provides safe operation even in flammable and explosive industrial areas.
Core Parameters: 0-1000 ppm measuring range, 2.5-inch HD color screen, RS485 & 4~20mA signal output ensures accurate and stable data transmission.
Industrial Application Scenarios: Ideal for boiler rooms, heat treatment workshops and underground parking lots where carbon monoxide accumulates easily.
OEM & Bulk Support: Neutral packaging and OEM customization available for wholesalers, with 300 pieces minimum order quantity.
Online Gas Detector Parameter Table
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Signal Output |
①4-20mA signal: standard 12-bit precision 4-20mA output chip, transmission distance 1Km |
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②RS485 signal: using standard MODBUS RTU protocol, transmission distance 1Km |
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③Voltage signal: 0.4-2V, 0-5V, 0-10V output, optional (choose one of voltage output or current output) |
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④Switching signal: Standard configuration is 1 set of passive contact relay, capacity 220VAC3AV/24VDC3A |
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Measured Gas |
CO |
Testing Principle |
Electrochemistry |
Precision |
±2%F.S |
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Range |
0-100ppm |
Resolution |
1ppm |
Working Temp |
-20 ～ 50℃ |
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Humidity |
0-95%RH |
Response Time |
T90<10S |
Storage Temp |
-20 ～ 50℃ |
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Warm-up Time |
10S |
Working Pressure |
86kpa-106kpa |
Working Current |
≤50mA |
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Working Voltage |
DC5V±1%/DC24±1% |
Baud Rate |
9600 |
Size |
220*205*97 |
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Installation |
Wall-mounted, pipe... |
Warranty |
1year |
Service Life |
3-5years |
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IP Grade |
IP66 |
Explosion-proof |
E x d I IC T 6 / EX ATEX |
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Receiving Equipment |
pc, control alarm, PLC, DCS, DDC system |
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Alarm Code |
On-site sound and light alarm, external alarm, remote controller alarm, computer data collection software alarm, etc. |
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Alarm Setting |
Two-level alarm is standard, three-level alarm is optional; alarm mode can be set: regular high and low alarm, interval control alarm |
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Connecting Cables |
① For 4~20mA, choose a three-core shielded cable, and for RS485, choose a four-core cable. When the distance exceeds 1000 meters (with a detector), the single wire diameter is ≥ 1.5mm, and the shielding layer is connected to the earth. |
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②Wireless transmission: LORA and Zigbeg modules can be built-in for short-range wireless transmission; GPRS/4G modules can be externally used to transmit remote data to the cloud platform, and historical records can be viewed on computers and mobile phones without distance restrictions (optional) |
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| Interface Display | Internal diagram of the detector | Sensor |
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FAQ
Q1: What is the core sensor technology of this detector, and what is its lifespan?
A: We primarily use high-performance electrochemical sensors, which offer advantages such as high sensitivity, fast response, excellent selectivity for carbon monoxide, and low power consumption. Under normal industrial conditions, its average expected lifespan is 2-3 years, depending on gas exposure concentration and environmental conditions (e.g., temperature, humidity).
Q2: What is the detection range of the instrument, and how accurate is it?
A: The standard range is 0-1000 ppm (higher ranges can be customized, such as 0-2000 ppm or 0-5000 ppm, suitable for high-risk scenarios like steel and chemical industries). The resolution can reach 1 ppm, and the accuracy is typically within ±3% FS (full scale). All instruments undergo strict calibration and testing before leaving the factory.
Q3: Does it have explosion-proof certification, and what hazardous areas is it suitable for?
A: Yes. Our fixed gas detectors hold explosion-proof certification issued by the National Center for Quality Supervision and Inspection of Explosion-proof Electrical Products, meeting explosion-proof standards such as Ex d IIC T6 Gb / Ex tD A21 IP66 T80°C. They are suitable for Zone 1 and Zone 2 hazardous gas environments, as well as Zone 21 and Zone 22 hazardous dust environments. Please confirm the model based on your specific area classification.
Q4: What is the protection rating, and can it be used in harsh environments (high temperature, high humidity, dusty)?
A: The enclosure protection rating is typically IP65, ensuring complete dust resistance. The probe and transmitter are designed to operate within a temperature range of -20°C to +50°C and a humidity range of 0-95% RH (non-condensing). For extreme temperatures, corrosive gases, or heavy dust environments, we offer optional accessories such as specialized sampling probes, cooling and dust removal filters, or corrosion-resistant enclosures.
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