MP135 MP-135 Semiconductor - type Gas Sensor Mainly For Indoor Air Quality Monitoring Detect Harmful Gases Such As CO And Alcohol
MP135 MP-135 Semiconductor - type Gas Sensor Mainly For Indoor Air Quality Monitoring Detect Harmful Gases Such As CO And Alcohol
The MP135 is a planar semiconductor gas sensor designed for detecting harmful gases like hydrogen (H₂), alcohol and carbon monoxide (CO). It integrates a heater and metal oxide semiconductor material on a subminiature aluminum oxide (Al₂O₃) ceramic substrate. The electrodes lead out the electrical signals, and the entire sensing component is encapsulated in a metal socket and cap. Its working principle relies on the change of conductivity with the concentration of target gases — the higher the concentration of the detected gas, the higher the conductivity of the sensor. By means of a simple external circuit, this conductivity change can be converted into an output signal that matches the gas concentration, enabling easy integration into various detection systems.
Application Scenarios:
- Household and office air quality monitoring equipment, used to detect harmful gases such as CO and alcohol.
- Automatic exhaust devices, which trigger exhaust operations when harmful gas concentrations exceed the set threshold.
- Air purifiers, helping to identify air pollution levels and start purification procedures accordingly.
- Small - sized gas detection modules that require simple driving circuits and low power consumption.
| Sensor Type | Semiconductor planar sensor |
| Encapsulation | Metal cap, DIP - 4 package |
| Detectable Gases | Hydrogen (H₂), Alcohol, Carbon Monoxide (CO) |
| Detection Range | H₂: 10 - 1000 ppm; Alcohol: 10 - 1000 ppm; CO: 10 - 500 ppm |
| Loop Voltage (Vc) | DC ≤ 24V; Standard test condition: 5.0V ± 0.1V DC |
| Heating Voltage (Vh) | 5.0V ± 0.1V (AC or DC) |
| Heating Resistance (Rh) | 95Ω ± 10Ω (at room temperature) |
| Heating Power Consumption (Ph) | ≤ 300mW |
| Surface Resistance (Rs) | 10kΩ - 100kΩ (in 50 ppm H₂) |
| Operating Temperature Range | -10°C - +50°C |
| Storage Temperature Range | -20°C - +70°C |
| Operating Humidity Range | ＜95%RH |
| Standard Test Conditions | Temperature: 20°C ± 2°C; Humidity: 65% ± 5%RH |
| Warm - up Time | More than 48 hours |
| Load Resistance (RL) | Adjustable |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.