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Equipped with original imported intelligent gas sensors, this is a high-performance intelligent detection instrument capable of continuous online monitoring of multiple gases. The detector features an integral explosion-proof structure with high sensitivity and precision. Real-time gas concentration data can be displayed on a computer through a gas alarm controller and monitoring software. Additionally, optional wireless modules enable real-time transmission of monitoring data and alarm statuses to safety control centers. It is widely applicable across industries such as petroleum/petrochemicals, metallurgy, environmental protection, gas, fire safety, municipal services, chemical engineering, shipbuilding, power generation, process control, wastewater treatment, and emergency rescue monitoring.
>>Main technical parameters
Detection Principle | Electrochemical principle, Infrared principle, Catalytic combustion principle |
Measuring Range | H₂S: 0-100 ppm; CO: 0-1000 ppm; O₂: 0-25% VOL; Ex: 0-100% LEL (other gases customizable) |
Resolution |
0.01, 0.1, 1 |
Sampling Method |
Free diffusion type – Online continuous detection with free diffusion method. |
Installation Method |
Wall-mounted; Pipeline-mounted (clamp-on or insertion type, with external threads) |
Indication Error | ≤±1% F.S |
Repeatability | ≤±1% (F.S/year) |
Zero Drift | ≤±1% (F.S/year) |
Response Time |
≤20 seconds (T90) (higher requirements depend on sensor performance) |
Recovery Time |
≤10 seconds (T90) (higher requirements depend on sensor performance) |
Power Supply | 12-30 VDC |
Power Consumption |
≤2.5 W (at DC24V) |
Environmental Pressure |
80 kPa ~ 120 kPa |
Environmental Temperature |
-20°C ~ +60°C (typical); -40°C ~ +80°C (extreme) |
Environmental Humidity |
10%~95% RH (non-condensing) |
Main Material |
ADC12 aluminum alloy housing with Teflon coating (wear-resistant and corrosion-resistant) |
Output Signal |
Three-wire 4-20 mA current signal output (compatible with alarm controllers) |
Signal Transmission |
Shielded three-core (or four-core) cable; maximum transmission distance: 1000-2000 meters |
Alarm Method |
Audible and visual alarm (optional, alarm sound <90 dB) |
Direct Reading |
Measured value, max/min values |
Data Download |
RS485 serial port for data export |
Calibration |
2-4 point calibration; customizable calibration values |
Explosion-proof Electrical |
① NPT 3/4 internal thread (optional: 1/2 NPT, G3/4, G1/2); ② Explosion-proof cable gland (optional, certified) |
Explosion-proof Mark |
Ex d II CT6 Gb |
Protection Level |
IP66 |
Dimensions |
180 mm (H) × 140 mm (W) × 92 mm (D) |
Weight |
Approx. 1.6 kg (aluminum alloy housing) |
Compliance Standards |
GB15322.1-2003, GB3836.1-2010, GB3836.2-2010 |
Quality Assurance |
1-year warranty; free repair during warranty period |
>>List of Commonly Detected Gas Types
NO |
Detection |
Range |
Accuracy |
T90 Response time |
Resolution |
Alarm set point (low/high) |
1 |
PH3 |
0 – 5 ppm |
±5% (F.S) |
≤ 25 s |
0.01 ppm |
0.3 ppm/5 ppm |
2 |
O2 |
0-30%Vol |
±5% (F.S) |
≤ 15 s |
0.10% Vol |
18.0%Vol/23.0%Vol |
3 |
EX |
0-100% LEL |
±5% (F.S) |
≤ 15 s |
1% LEL |
25.0%/50.0% LEL |
4 |
CO |
0 - 2000 ppm |
±5% (F.S) |
≤ 25 s |
1 ppm |
50 ppm/100 ppm |
5 |
H2S |
0 -100 ppm |
±5% (F.S) |
≤ 30 s |
1 ppm |
10 ppm/20 ppm |
6 |
SO2 |
0 - 100 ppm |
±5% (F.S) |
≤ 30 s |
0.1 ppm |
2 ppm /10 ppm |
7 |
CI2 |
0 - 20 ppm |
±5% (F.S) |
≤ 30 s |
0.1 ppm |
1 ppm /10 ppm |
8 |
NH3 |
0 – 200 ppm |
±5% (F.S) |
≤ 50 s |
1 ppm |
25 ppm /50 ppm |
9 |
NO2 |
0 - 20 ppm |
±5% (F.S) |
≤ 25 s |
0.1 ppm |
3 ppm/10 ppm |
10 |
NO |
0 - 250 ppm |
±5% (F.S) |
≤ 60 s |
1 ppm |
25 ppm/50 ppm |
11 |
H2 |
0 - 1000 ppm |
±5% (F.S) |
≤ 60 s |
1 ppm |
50 ppm /100 ppm |
12 |
HCN |
0 - 50 ppm |
±5% (F.S) |
≤ 200 s |
0.1 ppm |
10 ppm /20 ppm |
13 |
HCL |
0 - 20 ppm |
±5% (F.S) |
≤ 60 s |
0.1 ppm |
5 ppm /10 ppm |
14 |
CH4 |
0 - 5% Vol |
±5% (F.S) |
≤ 60 s |
0.1% Vol |
customized |
15 |
CO2 |
0 - 5% Vol (0-5000ppm) |
±5% (F.S) |
≤ 60 s |
0.01% Vol (1 ppm) |
customized |
16 |
PID(VOCs) |
1-1999 ppm |
±5% (F.S) |
≤ 20 s |
0.1 ppm |
customized |
17 |
C3H8 |
0 - 5%Vol |
±5% (F.S) |
≤ 60s |
0.01% Vol |
customize |
18 |
O3 |
0 – 5 ppm |
±5% (F.S) |
≤ 30s |
0.02 ppm |
1ppm/2 ppm |
19 |
SF6 |
0 – 1000 ppm |
±5% (F.S) |
≤ 60s |
0.2ppm |
25ppm/50 ppm |
20 |
HF |
0 – 10 ppm |
±5% (F.S) |
≤ 60s |
0.1ppm |
3ppm/10 ppm |
Remark: Customized alarm setting points and detection ranges are also available.