Fixed Gas Detectors

Fixed Gas Detectors provide long-term, real-time monitoring of toxic, harmful, or flammable and explosive gases in the environment. Gas sensors detect the composition and concentration of gases of concern.

Customizable detection options include one to seven gases. Alarms are issued when potential hazards are present. Signal outputs, including 4-20mA, RS485, and digital signals, enable easy integration into industrial control systems such as PLCs, DCSs, and DDCs.

Installing appropriate Fixed Gas Detectors in industrial environments or equipment can significantly reduce the threat of explosive gas leaks or overexposure to toxic gases.

Featured Products

Online Gas Detector for Single Gas with Remote Control
Online Gas Detector for Single Gas
Multi Gas Detector for 4 Gases
Multi Gas Detector for 2~8 Gases
High Temperature Combustible Gas Detector Thread Mount
High Temperature Combustible Gas Detector
Fixed-Gas-Detector-with-Remote-Sensor
Fixed Gas Detector with Remote Sensor
Wireless-Gas-Detector
Fixed Wireless Gas Detector
Wall-mounted-Temperature-and-Humidity-Monitor-1
Wall-mounted Temperature and Humidity Monitor for Ambient
Fixed VOC Monitor Digital Display
Fixed VOC Monitor Digital Display
Fixed Gas & Flame Detection

Benefits

  • Intelligent EC sensor, using intrinsically safe technology, can support multi-gas and multi-range detection.
  • Customized products can be provided according to user needs. Sensor interchange, offline calibration and zero point self-calibration can be realized without tools.
  • Intelligent temperature and zero point compensation algorithm.
  • 4-20MA, RS485 and other signal outputs. It can be easily connected to industrial control systems such as PLC, DCS, DDC, and can also be used as a stand-alone control.
  • Switch signal output, convenient for linkage with control equipment such as fans or solenoid valves.
  • Extra-large dot matrix LCD display, Chinese or English operation interface optional.
  • Supports multiple detection units such as PPM, %LEL, %VOL, mg/m3, etc.
  • Alarm point, zero point adjustment and target point calibration of the detector can be performed by remote control without opening the cover.
  • Built-in button design + factory reset function to avoid personnel misoperation.
  • Local alarm indication, integrated sound and light detector (optional).
  • The instrument has over-range and reverse polarity protection to avoid danger caused by improper human operation.
  • Aluminum alloy casting explosion-proof housing, sturdy and durable.
  • Explosion-proof certificate level: ExdIICT6;
  • Protection level: IP66;
  • CNAS, CPA, SIL safety and other international certifications.
Fixed Gas Detectors Benefits
The Gas Monitor Experts

Application of Fixed Gas Detectors

  • Paint room;
  • Incineration plant;
  • Medical research, pharmaceutical production workshop, company;
  • Environmental monitoring;
  • School research;
  • Building construction;
  • Fire alarm,
  • Sewage treatment;
  • Industrial gas process control;
  • Petroleum petrochemical, chemical plant;
Application of Fixed Gas Detectors
  • Smelter, steel plant;
  • Coal plant, thermal power plant;
  • Boiler room;
  • Gas treatment plant;
  • Tunnel construction;
  • Oil pipeline;
  • Gas station;
  • Underground gas pipeline maintenance;
  • Indoor air quality detection;
  • Safety protection equipment monitoring in hazardous places;

Gas Monitoring System

Gas monitoring system is an intelligent system for real-time detection, analysis and recording of gas composition and concentration in the environment. It is widely used in industrial safety, environmental protection, petrochemical, energy production and other fields to ensure safe, compliant and efficient operation. Sino-Inst can customize products according to user needs, and also supports functions such as output signal fine-tuning to facilitate system networking and maintenance.

1. Standard bus RS485 and 4~20mA standard signal output at the same time. 1 group of relay switch output, optional frequency output 200-1000HZ, HART protocol signal, 1~5 output, wireless transmission (10-50 kilometers or unlimited distance). It can be remotely monitored in real time by wire or wireless, and the data can be uploaded to the mobile phone or transmitted to the Environmental Protection Bureau, other monitoring centers, monitoring equipment, monitoring computers through the local area network and the Internet, and the concentration of the site can be monitored in real time through free host computer software or gas alarm controller.

2. Compatible with various secondary meters, data acquisition modules, PLC, DCS systems. It can directly drive solenoid valves, fans, alarms and other equipment. It can also drive high-power equipment by driving intermediate relays.

Common Gas Detection Ranges

Detection gasRangeMaximum allowable errorMinimum readingResponse time T90
Combustible gas (EX)0-100%LEL＜±3%(F.S)0.1%LEL≤10 seconds
Combustible gas (EX)0-100%Vol＜±3%(F.S)0.1%Vol≤10 seconds
Methane (CH4)0-100%LEL＜±3%(F.S)0.1%LEL≤10 seconds
Methane (CH4)0-100%Vol＜±3%(F.S)0.1%Vol≤10 seconds
Oxygen (O2)0-30%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Oxygen (O2)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Oxygen (O2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Nitrogen (N2)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Carbon monoxide (CO)0-100ppm＜±3%(F.S)0.1ppm≤25 seconds
Carbon monoxide (CO)0-1000ppm＜±3%(F.S)0.1ppm≤25 seconds
Carbon monoxide (CO)0-2000ppm＜±3%(F.S)0.1ppm≤25 seconds
Carbon monoxide (CO)0-20000ppm＜±3%(F.S)1ppm≤25 seconds
Carbon monoxide (CO)0-100000ppm＜±3%(F.S)1ppm≤20 seconds
Carbon dioxide (CO2)0-500ppm＜±3%(F.S)1ppm≤20 seconds
Carbon dioxide (CO2)0-2000ppm＜±3%(F.S)1ppm≤20 seconds
Carbon dioxide (CO2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Carbon dioxide (CO2)0-50000ppm＜±3%(F.S)1ppm≤30 seconds
Carbon dioxide (CO2)0-20%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Carbon dioxide (CO2)0-100%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Carbon dioxide (CO2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Formaldehyde (CH2O)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Formaldehyde (CH2O)0-100ppm＜±3%(F.S)0.01ppm≤45 seconds
Formaldehyde (CH2O)0-1000ppm＜±3%(F.S)1ppm≤20 seconds
Ozone (O3)0-1ppm＜±3%(F.S)0.001ppm≤20 seconds
Ozone (O3)0-5ppm＜±3%(F.S)0.001ppm≤20 seconds
Ozone (O3)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Ozone (O3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ozone (O3)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ozone (O3)0-30000ppm＜±3%(F.S)1ppm≤30 seconds
Ozone (O3)0-20mg/L＜±3%(F.S)0.01mg/L≤30 seconds
Ozone water (O3)0-20mg/L＜±3%(F.S)0.01mg/L≤30 seconds
Hydrogen sulfide (H2S)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Hydrogen sulfide (H2S)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen sulfide (H2S)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen sulfide (H2S)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Hydrogen sulfide (H2S)0-10000ppm＜±3%(F.S)1ppm≤30 seconds
Sulfur dioxide (SO2)0-10ppm＜±3%(F.S)0.001ppm≤45 seconds
Sulfur dioxide (SO2)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfur dioxide (SO2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfur dioxide (SO2)0-500ppm＜±3%(F.S)0.1ppm≤30 seconds
Sulfur dioxide (SO2)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Sulfur dioxide (SO2)0-10000ppm＜±3%(F.S)1ppm≤30 seconds
Nitrogen monoxide (NO)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Nitrogen monoxide (NO)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen monoxide (NO)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Nitrogen dioxide (NO2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Nitrogen dioxide (NO2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Nitrogen dioxide (NO2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen dioxide (NO2)0-1000ppm＜±3%(F.S)0.1ppm≤25 seconds
Nitrogen dioxide (NO2)0-5000ppm＜±3%(F.S)1ppm≤25 seconds
Nitrogen dioxide (NO2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Nitrogen oxides (NOX)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen oxides (NOX)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Nitrogen oxides (NOX)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Chlorine (CL2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Chlorine (CL2)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Chlorine (CL2)0-200ppm＜±3%(F.S)0.1ppm≤30 seconds
Chlorine (CL2)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ammonia (NH3)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Ammonia (NH3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ammonia (NH3)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ammonia (NH3)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Ammonia (NH3)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Hydrogen (H2)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Hydrogen (H2)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Hydrogen (H2)0-20000ppm＜±3%(F.S)1ppm≤30 seconds
Hydrogen (H2)0-40000ppm＜±3%(F.S)1ppm≤30 seconds
Hydrogen (H2)0-100%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Helium (He)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Argon (Ar)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Xenon (Xe)0-100%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Hydrogen cyanide (HCN)0-30ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen cyanide (HCN)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen chloride (HCL)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen chloride (HCL)0-200ppm＜±3%(F.S)0.1ppm≤20 seconds
Phosphine (PH3)0-5ppm＜±3%(F.S)0.001ppm≤20 seconds
Phosphine (PH3)0-25ppm＜±3%(F.S)0.01ppm≤20 seconds
Phosphine (PH3)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Chlorine dioxide (CLO2)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Chlorine dioxide (CLO2)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Chlorine dioxide (CLO2)0-200ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethylene oxide (ETO)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethylene oxide (ETO)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ethylene oxide (ETO)0-100%LEL＜±3%(F.S)1%LEL≤30 seconds
Phosgene (COCL2)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Phosgene (COCL2)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Silane (SiH4)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Silane (SiH4)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Fluorine (F2)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Fluorine (F2)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Fluorine (F2)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen fluoride (HF)0-10ppm＜±3%(F.S)0.01ppm≤20 seconds
Hydrogen fluoride (HF)0-50ppm＜±3%(F.S)0.01ppm≤20 seconds
Hydrogen bromide (HBr)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Diborane (B2H6)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Arsine (AsH3)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Arsine (AsH3)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Arsine (AsH3)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Germane (GeH4)0-2ppm＜±3%(F.S)0.001ppm≤30 seconds
Germane (GeH4)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrazine (N2H4)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Hydrazine (N2H4)0-300ppm＜±3%(F.S)0.1ppm≤30 seconds
Tetrahydrothiophene (THT)0-100mg/m3＜±3%(F.S)0.01mg/m3≤30 seconds
Bromine (Br2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Bromine (Br2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Bromine (Br2)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Acetylene (C2H2)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Acetylene (C2H2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Acetylene (C2H2)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ethylene (C2H4)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Ethylene (C2H4)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethylene (C2H4)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Acetaldehyde (C2H4O)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethanol (C2H6O)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethanol (C2H6O)0-2000ppm＜±3%(F.S)1ppm≤60 seconds
Methanol (CH6O)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Methanol (CH6O)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Carbon disulfide (CS2)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Carbon disulfide (CS2)0-5000ppm＜±3%(F.S)0.01ppm≤30 seconds
Acrylonitrile (C3H3N)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Acrylonitrile (C3H3N)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Methylamine (CH5N)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
I20-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Styrene (C8H8)0-200ppm＜±3%(F.S)0.1ppm≤30 seconds
Styrene (C8H8)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Vinyl chloride (C2H3CL)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Trichloroethylene (C2HCL3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Tetrachloroethylene (C2CL4)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Laughing gas (N2O)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen trifluoride (NF3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen peroxide (H2O2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-30000ppm＜±3%(F.S)1ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-200g/m3＜±3%(F.S)0.1g/m3≤30 seconds
Sulfuryl fluoride (SO2F2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-10000ppm＜±3%(F.S)1ppm≤30 seconds
C6H60-10ppm＜±3%(F.S)0.01ppm≤30 seconds
C6H60-100ppm＜±3%(F.S)0.01ppm≤30 seconds
C6H60-2000ppm＜±3%(F.S)1ppm≤30 seconds

Gas concentration detector is a flammable gas monitor with a modular design, intelligent sensor detection technology, overall explosion-proof (d) structure, and fixed installation.

Sino-Inst is a leading supplier of Gas Detectors and Water quality analyzers. Our gas detectors include single gas monitoring, four-in-one gas monitoring, split gas detection, etc. If you need to customize a fixed gas detector, please feel free to contact our sales engineer!

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