Overview
MEMS VOC gas sensor is using MEMS micro-fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air with low conductivity metal oxide semiconductor material. When the sensor exposed to gas atmosphere, the conductivity is changing as the detected gas concentration in the air. The higher the concentration of the gas, the higher the conductivity. Use simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.
Key Features
- MEMS technology, strong structure
- Low power consumption
- High sensitivity
- Fast response and resume
- Simple drive circuit
Applications
Gas leak detection for mobile phones, computers and other consumer electronics applications, also for breathing gas detection control, smoke alarm indoor etc.
Technical Specifications
| Part No. | RN-613D | ||
| Sensor Type | MEMS VOC Sensor | ||
| Standard Encapsulation | Ceramic | ||
| Detection Gas | Ethanol, formaldehyde, toluene &etc. | ||
| Detection Range | 1~500ppm | ||
| Standard Circuit Conditions | Loop Voltage | VC | ≤24V DC |
| Heater Voltage | VH | 2.5V±0.1V AC or DC | |
| Load Resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 80Ω±20Ω (room temperature) |
| Heater consumption | PH | ≤50mW | |
| sensitive materials resistance | RS | 1KΩ~30KΩ(in 50ppm ethanol) | |
| Concentration slope | α | ≤0.9(R200ppm/R500ppm ethanol) | |
| Sensitivity | S | R0(in air)/Rs( in 50ppm ethanol )≥3.0 | |
| Standard test conditions | Temp. Humidity | 20°C±2°C;55%±5%RH | |
| Standard test circuit | VH:2.5V±0.1V;VC:5.0V±0.1V |
