Vapour Gas Sensor, Toluene/Ethanol, 1~50ppm

Precision organic vapor detection, with vapor sensors specifically designed to monitor gases such as toluene, methanol, benzene, alcohol, and acetone. Detection range 1-50 ppm, featuring exceptional sensitivity (Rs value in air/Rs value in 10 ppm toluene ≥ 3). The gas sensor employs an adjustable load resistor design, operating stably at 5V voltage, and maintains consistent performance under varying humidity and temperature conditions.

Feature

• This vapor gas sensor exhibits high sensitivity to organic gases such as toluene, benzene, and formaldehyde, featuring fast response and recovery times with low power consumption.
• SUCH vapor gas sensors deliver precise readings within the 1 to 50 ppm range. With a sensitivity ratio ≥3 and low concentration slope, they ensure stable and reliable performance.
• The metal housing structure effectively resists humidity (65% ±5% relative humidity). A 5.0V heating voltage ensures long-term operational efficiency, making it suitable for continuous environmental monitoring.
• Primarily used in scenarios such as automatic ventilation systems and air purifiers in residential environments for detecting harmful gases.

Dimension (unit: mm)

Test Circuit

Note: The diagram above shows the basic test circuit for a vapor gas sensor. This sensor requires two applied voltages: heater voltage (V_H) and test voltage (V_C). V_H provides the sensor with a specific operating temperature and can be supplied by either a DC or AC power source. V_RL is the voltage across the series load resistor (R_L) of the sensor. V_C is the test voltage applied to the load resistor R_L and must be supplied by a DC power source.

Long-term Stability Curve

Note: All tests in the figure were conducted under standard test conditions. The horizontal axis represents observation time, and the vertical axis represents the V_RL value.

Sensor Curve

Sensitivity Characteristic Curve

Temperature and Humidity Characteristic Curve