Flammable Gas Sensor, 0-100%LEL

Cost-effective flammable gas sensor for sale, with a detection range of 0–100% LEL and a sensitivity of 20–40mV/1% CH₄. It utilizes a catalytic combustion detection principle, boasting a resolution of 1% LEL and a response and recovery time of less than 30 seconds. This LEL gas sensor features a compact design, an operating voltage of only 2.8V, and low power consumption, making it widely used in industrial safety, mines, gas equipment, and other applications.

Feature

• The LEL gas sensor utilizes a catalytic combustion principle, achieving a sensitivity of 20–40mV/1%CH₄, ensuring accurate response to combustible gas concentrations.
• The fast response recovery time (T₉₀ ≤ 30s, T₁₀ ≤ 30s) enables rapid alarm and recovery, ensuring real-time monitoring.
• It operates stably in temperatures ranging from -20°C to +60°C and at temperatures below 95% RH, meeting the demands of complex industrial environments.
• This ATEX-certified combustible gas sensor features low zero and sensitivity drift, extending product life and reliability.

Dimension (unit: mm)

Circuit Diagram

1. The pins of the flammable gas sensor must be connected through the PCB socket. Soldering will damage the sensor, and bending the pins is prohibited.
2. The working electrode and reference electrode should be short-circuited during storage.
3. The sensor should be kept away from organic solvents, alcohol, paint, oil, and high-concentration gases, as well as silicone and other adhesives.
   Positive-output electrochemical sensors (such as CO, H2S, SO2, and NH3) require oxygen for their reaction and should be calibrated and tested using standard gas with air as the background gas. Failure to do so will impair sensor performance.
4. LEL gas sensors should not be used long-term in environments containing corrosive gases, as these gases can damage the sensor.
5. Calibration with a target gas is recommended. Cross-sensitivity will vary by +30%. Calibration and measurement accuracy are not guaranteed if cross-sensitivity gases are used for calibration.

Sensor Curve

Stability Characteristic Curve

Typical Tempe and Humidity Curve