Fixed Multi Gas Composite Gas H2S CO O2 Ex Leak Detector
>>Overview
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.
>>Features
◆ Original imported high-performance sensors with high measurement accuracy, excellent repeatability, and long service life.
◆ 16-bit AD chip and 4-layer PCB design ensure enhanced weak signal processing and superior anti-interference capabilities.
◆ Dashboard-style display interface with clear, elegant readings and user-friendly design details.
◆ Multiple unit options: mg/m³, ppm, VOL, and LEL.
◆ Embedded 32-bit low-power processor paired with proprietary signal processing algorithms for fast response speed and high stability.
◆ Auto-protection against high-concentration gas impact, factory reset function, and misoperation prevention.
◆ Built-in infrared remote control for easy operation without opening the housing.
◆ Configurable outputs: three-wire 4–20mA, RS485 signal, and relay output.
◆ Dual cable entry ports for convenient on-site installation.
◆ Robust mechanical design: Gas chamber made of high-grade aluminum alloy profile ensures wear-resistant, corrosion-resistant performance in harsh industrial environments. Scientifically optimized gas chamber design guarantees real-time monitoring accuracy.
◆ Explosion-proof certification: Exd II CT6, certified by the National Explosion-Proof Electrical Product Testing Center.
>>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.
Nanjing Juge Environmental Technology Co., Ltd.
Founded in 2015, Juge focuses on the field of environmental online
monitoring and has gathered outstanding talents who have been
engaged in environmental online monitoring for many years. At the
same time, it cooperates with some key professional universities
and research institutes in China, and is a national high-tech
enterprise that integrates research and development, production,
sales, and after-sales service with environmental online monitoring
systems as its core. It is a provider of overall solutions for
smart environmental online monitoring systems.
Main business focuse on water quality monitoring instruments, flue
gas analyzers, VOC online monitoring systems, CEMS flue gas
continuous monitoring systems, and flue gas particulate matter
monitoring systems. Widely used in safety, environmental
protection, petroleum, chemical, pharmaceutical, metallurgical,
coal chemical, warehousing and other fields
With a pragmatic enterprise management team, high-end R&D
talents, experienced manufacturing experts, and enterprising
marketing elites, we have developed a leading position among
domestic peers and have always adhered to the business philosophy
of providing users with higher quality products and more intimate
services. We have made a vision of being responsible and doing our
best to create an environmentally friendly and healthy work and
living environment, and our goal is to pursue the interests of our
customers.
