Products
Air Quality (VOC) Sensor
Application:
Indoor air quality monitoring, mobile phones, computers and other consumer electronic products to detect air qualityProduct characteristics:
Adopts MEMS technology, with a solid structure and good shock resistancePerformance
GM-502B gas sensors use MEMS technology to make micro-hotplates on Si-based substrates. The gas-sensitive materials used are metal oxide semiconductor materials with low conductivity in clean air. When the sensor is in a gas environment, the conductivity of the sensor changes with the concentration of the detected gas in the air. The higher the concentration of the gas, the higher the conductivity of the sensor.
Technical specifications
| Product model | GM-502B | |
| Product type | MEMS VOC gas sensor | |
| Standard packaging | Ceramic Package | |
| Detect gas | Ethanol, Formaldehyde, Toluene | |
| Detect concentration | 1ppm-500ppm | |
| Standard circuit conditions | Circuit voltage(Vc) | ≤24V DC |
| Heat voltage(VH) | 2.5V±0.1V AC or DC | |
| Load resistance(RL) | adjustable | |
| Sensor characteristics under standard testing conditions | Heating resistor(RH) | 80Ω士20Ω (room temperature) |
| Heatingpower(PH) | ≤50 mW | |
| Sensitive body resistance(RS) | 1KΩ~30KΩ(in 50ppm Ethanol) | |
| Sensitivity(S) | R0(in air)/RS(in 50ppm Ethanol)≥3.0 | |
| Concentration slope(α) | ≤0. 9(R200ppm/R50ppm Ethanol) | |
Basic Circuit
Storage time and preheating time
Storage time | Recommended warm-up time |
Under 1 month | no less than 24 hours |
1-6 months | no less than 48 hours |
Over 6 months | no less than 72 hours |
TenSensor, China's first listed gas sensor company,Tensensor can provide more than 100 varieties of six series including：
semiconductor gas sensor
electrochemical gas sensor
infrared gas sensor
dust sensor
pyroelectric sensor
thermopile sensor, etc.
which can be used for more than 200 kinds of gas and infrared, dust and other indicators detection, widely used in the field of security for detecting gas leakage, noxious gas leakage, smog and fire, the field of family, office and factory for detecting HCHO, VOC, CO2, PM2.5 and so on.
Moreover, the solutions for security, household electrical appliances, consumer electronics, smart home, instruments and meters are available.
For more information about GM-502B sensor, please contact account manager.
TEL：0086-0351-5249552
Whatsapp：+86 18335818384
Email：[email protected]
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