Fixed methane gas detector with working range 0 to 100% LEL, remote control with 4-20mA&RS485 output signal, supports sound and light alarm. Fixed CH4 gas detector is used for nitrogen concentration detecting and leak monitor in 24 hours.
Anti-magnetic interference
- The methane 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.
Using high-precision sensors
- The fixed online CH4 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.
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.
Applications
Fixed methane CH4 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.
| Model | GD300-CH4 |
| Detection Principle | Electrochemistry |
| Gas | Methane (CH4) |
| Range | 0-50%VOL, 0-100%VOL, 0-100% LEL |
| Resolution | 0.01%VOL (0-50%VOL), 0.1%VOL (0-100%VOL), 1% LEL (0-100% LEL) |
| Accuracy | ≤±3% F.S. |
| Responce Time | ≤10s |
| Repeatability | ≤±1% |
| Recovery Time | ≤10s |
| Linearity Error | ≤±1% |
| Zero Shift | ≤±1% (F.S./year) |
| Signal Output (Optional) | 4-20mA and RS485Â 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 Methane (CH4) Gas Detector Dimension (Unit: mm)
SISCO Gas Detector Catalogue.pdfQ1: What is a fixed gas detector?
A1: 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: Gas detector working principle
The working principle of the gas detector is to use the electrochemical principle to detect a certain amount of gas. After the sensor is sintered, it enters the sensor through the breathable membrane on the sensor. The sensor electrodes and electrolyte consume oxygen, creating an electrical current between the anode and cathode. When current is passed through the inductor, the positive electrode of lead is oxidized to lead oxide, and the output current intensity is linearly related to the oxygen concentration. The sensor's fast response capability enables continuous monitoring of air or process gases.
If you don't know where the leak is, use this gas detector to find the leak. As far as the structure is concerned, it is a product used for the separation of the head detection probe, which can be used as a handheld mobile detection or online desktop detection, suitable for some specific places.
Thank you for buying industrial test and measurement equipment on SISCO.com, 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.
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