Overview
MEMS alcohol 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 construction
- Good shock resistance
- Small sizes and low power consumption
- Fast response and resume
- Simple drive circuit, Long lifespan
Applications
Applicable to the ethanol vapor of the place where the consumer electronics products such as mobile phones and computers are used for testing; also suitable for drink supervision to motorists and other risk operators.
Technical Specifications
| Part No. | RN-413D | ||
| Sensor Type | MEMS | ||
| Standard Encapsulation | Ceramic | ||
| Detection Gas | Ethanol vapor | ||
| 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) | |
| Sensitivity | S | R0(in air)/Rs(in 5000ppm Ethanol)≥3.0 | |
| Concentration Slope | α | ≤0.9(R100ppm/R30ppm Ethanol) | |
| 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 | ||
| Preheating time | ≥48hours |
