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    Fixed Carbon Dioxide (CO2) Gas Detector, 0 to 1000/2000/5000 ppm

    Fixed CO2 gas detector is used for carbon dioxide detection. Measuring range 0-1000/2000/5000/9999 ppm and 0-1%/ 0-5%/ 0-100% VOL for selection, remote control output signal 4-20mA and RS485, online monitor CO2 concentration and sound & light alarm, 24h work and real-time display, high accuracy 3% F.S, fast response within 10s.
    SKU: GD300-CO2
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    🚚 Free shipping
    🔙 30-day returns
    📅 Delivery: 7-12 days

    Carbon dioxide gas detector with detecting range 0-1000/2000/5000/10000 ppm for CO2 detection, output signal 4-20mA&RS485 for remote control. Fixed CO2 gas detector is a wall mounted instrument, which has sound and light alarm, real time display, 24 hours online for carbon dioxide leak monitor.

    sisco fixed gas detector

    Anti-magnetic interference

    • The fixed carbon dioxide gas detector can resist the strong magnetic interference of 15V/meter.
    • In areas with dense magnetic products or dense electronic products, such as tunnels, mines, confined spaces, etc., the data is guaranteed to be stable and reliable.
    sisco fixed gas detector

    Using high-precision sensors

    • The fixed online CO2 gas detector is equipped with an infrared remote control as standard, which can realize the functions of alarm point setting, zero point calibration, and address modification without opening the cover.
    • Compatible with various control alarms, PLC, DCS and other control systems to realize remote monitoring.
    sisco fixed gas detector

    Variety of installation methods

    • Wall mounted type, installed on the wall directly, real time monitoring.
    • Piping type, installed on the pipeline, monitoring the gas concentration inside.
    • Flow type, connected with external sampling pump and tube, measure the gas concentration in enclosed space.


    Fixed carbon dioxide CO2 online gas detector can detect harmful gas of furniture, flooring, wallpaper, paint and other items, which is widely used in biological pharmaceutical factories, green home, livestock and poultry breeding, greenhouse cultivation, warehousing and logistics, brewing and fermentation, agricultural production, etc.

    Fixed online gas detector application

    Model GD300-CO2
    Detection Principle Electrochemistry
    Gas Carbon Dioxide (CO2)
    Range (Optional) 0-1000 ppm
    0-2000 ppm
    0-5000 ppm
    0-9999 ppm
    0-1% VOL
    0-5% VOL
    0-100% VOL
    Resolution 0.1 ppm, 1 ppm (range 0-9999 ppm), 0.001% VOL (range 0-1% VOL & 0-5% VOL)
    Accuracy ≤±3% F.S.
    Response Time ≤10s
    Repeatability ≤±1%
    Recovery Time ≤10s
    Linearity Error ≤±1%
    Zero Shift ≤±1% (F.S./year)
    Signal Output (Optional) 4-20mA and RS485 
    Relay output: one group of relay output (1NO+1NC, 24V 100mA) for one alarm (default), or two groups of relay output (2NO+2NC, 24V 100mA) for high/low alarm (optional).
    Alarms Sound, light
    Display High light nixie tube display
    Installation Wall-mounted, piping type, flow-type (according to the detected environment)
    Connection Power connection type: G1/2 male thread explosion-proof flexible pipe
    Pipe-mounted type: M45*P2.0
    Operating Time 24h
    Explosion-proof Grade Ex d llC T6
    Protection Grade IP65
    Certification CE, ATEX
    Working Voltage 12~36V DC
    Case Material Die-casting aluminum housing
    Operating Temperature -20℃~50℃
    Operating Humidity 0~95%RH (non-condensing)
    Dimension 206*179*90mm
    Weight ≤1.6kg
    Accessories Power adapter: Input 100-240VAC 50/60Hz, Output 24VDC 2A (Optional USA plug & Europe plug)

    Note: To measure confined spaces such as pipelines, please contact us and inform the detailed conditions of use.

    Fixed Carbon Dioxide (CO2) Gas Detector Dimension (Unit: mm)

    Fixed gas detector with alarm dimension


    Q1: What is a fixed gas detector?
    The fixed gas detector is composed of sensors and transmitters, and is installed at the detection site. The secondary instrument consisting of circuit, power supply and display and alarm device is installed in a safe place, which is convenient for staff to monitor. In industrial installations and production processes, fixed gas detectors are generally used, because fixed gas detectors can be installed at specific detection points to detect specific gas leaks.

    Q2: What does a gas detector detect?
    A2: Combustible gases: Natural gas (methane), liquefied gas, coal gas (hydrogen), acetylene, pentane, alkynes, acetone, toluene, alcohols, hydrocarbons, light oil, etc.
    Toxic gases: Carbon monoxide, hydrogen sulfide, ammonia, chlorine, oxygen, phosphine, sulfur dioxide, hydrogen chloride, chlorine dioxide and other toxic and harmful gases.

    Q3: Difference between fixed gas detector and portable gas detector
    A3: The biggest advantage of fixed gas detectors is 24-hour uninterrupted measurement. As long as the power is turned on, the fixed gas detector is in normal detection work. Portable gas detectors are usually used in confined spaces and confined spaces, but the gas environment in these spaces is usually very complex, and there will be situations such as lack of oxygen and high concentrations of harmful gases.

    Tips: How to troubleshoot a gas detector?

    • Values are not displayed correctly
      If the gas detector has been used for a long time, or has not been calibrated for a long time, the problem of incorrect readings will occur. We all know that gas detectors are mainly detected by internal sensors. Sensors have a certain lifespan. When used for a certain number of times, the sensitivity of the sensor decreases, which affects the detection result. In addition, if the calibration is not performed for a long time, the test results will also be affected.
    • Gas detectors do not inhale
      This type of problem mainly occurs with pumped gas detectors. There is a small getter pump inside the detector for sucking in gas for detection. Once the suction pump is damaged or otherwise faulty, the gas detector will not be able to suction. This problem is easy to deal with and can be replaced with a new oil well pump.
    • Gas detector failure
      This kind of failure is easy to occur in special working environments, such as the presence of a large amount of dust and oil in the detection environment, which will contaminate the gas detector and cause failure. In such an environment, the gas detector needs to be cleaned.

    Thank you for buying industrial test and measurement equipment on, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

    What is covered?

    SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than SISCO approved.
    • Damage from use outside the product’s usage or storage parameters.
    • Damage from use of parts not sold by SISCO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
    5.0 2
    Write your own review Close
    Oisin | 11/23/2023 11:11 PM
    Continuous Monitoring
    The fixed nature of the detector allows for continuous and uninterrupted monitoring of CO2 levels. This continuous monitoring is essential for early detection of potential issues, enabling prompt corrective actions to be taken to maintain optimal air quality.
    Barry | 8/20/2023 11:01 PM
    Worked great
    So far it's worked great. I've only used this fixed gas detector once. I tested it with a lighter, even on its lowest sensitivity it easily detected the gas. Good value for money. Hope this gas detector can be used for a long time.