Product Introduction
MEMS VOC Gas SensorGM-502B Description:
The MEMS VOC gas sensor is composed of a Si-based micro-hotplate using MEMS technology and a metal oxide semiconductor material with low conductivity in clean air. When the target gas is present in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. A simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
MEMS VOC Gas Sensor GM-502B Features:
This product adopts MEMS technology, has a robust structure and good shock resistance; it features small size, low power consumption, high sensitivity, fast response and recovery, simple drive circuit, good stability, and long lifespan.
MEMS VOC Gas Sensor GM-502B Applications:
Suitable for indoor air quality monitoring, consumer electronics such as mobile phones and computers for air quality detection; also suitable for breath analyzers, indoor smoke alarms, etc.
MEMS VOC Gas Sensor GM-502B Parameters:
| Product Model | GM-502B | ||
| Product Type | MEMS VOC Gas Sensor | ||
| Standard Package | Ceramic Package | ||
| Detection Gas | Ethanol, formaldehyde, toluene, etc. | ||
| Detection Concentration | 1ppm～500ppm | ||
| Standard Circuit Conditions | Circuit Voltage | Vc | ≤24V DC |
| Heating Voltage | VH | 2.5V±0.1V AC or DC | |
| Load Resistance | RL | Adjustable | |
| Under Standard Test Conditions Gas Sensor Characteristics |
Heating Resistance | RH | 80Ω±20Ω (room temperature) |
| Heating Power Consumption | PH | ≤50mW | |
| Surface Resistance of Sensitive Body | 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) | |
| Standard Test Conditions | Temperature, Humidity | 20℃±2℃；55%RH±5%RH | |
| Standard Test Circuit | VH:2.5V±0.1V； Vc:5.0V±0.1V | ||
