GS139 TVOC Air Quality MEMS Gas Sensor
High sensitivity
Good stability
Low influence by temperature and humidity
Key information:
GS-TVOC Air Quality (TVOC) MEMS Gas Sensor is mainly composed of three parts: MEMS silicon-based heater, nanomaterials and surface-mounted ceramic housing, which is a Gas Sensor for detecting VOC concentration. The Gas Sensor is characterized by high sensitivity, low influence by temperature and humidity, good stability, etc.
Key parameters:
Model No. | GS139 | ||
Sensor Type | MEMS Semiconductor | ||
Standard Encapsulation | Ceramic package | ||
Detection Gas | Alcohol, fumes, toluene, acetone, formaldehyde, hydrogen sulfide, hydrogen, etc. | ||
Concentration | 20-100ppm Ethanol | ||
Resolution | 0.2ppm Ehanol | ||
Circuit | Loop Voltage | Vc | Vch=1.8~5V DC, 0.1sVel=0V DC,1s |
Heater Voltage | VH | 1.5-1.8V DC | |
Load Resistance | RL | Adjustable | |
Character | Heater Resistance | RH | 80-100Ω（Room Temp.） |
Heater consumption | PH | ≤26mW | |
Heater current | IH | ≤17mA | |
Sensor resistance | Rs | 10～300KΩ(in air) | |
Sensitivity | S | ≤0.3 Rs(10 ppm ehanol)/RO(in air) | |
Slope | α | ≤0.3(R10ppm/R1ppm Alcohol) | |
Condition | Temp. , Humidity | 20℃±2℃;65%±5%RH | |
Standard testing circuit | Vch=1.8~5V DC, 0.1sVel=0V DC,1s | ||
Preheat time | 5-10minutes | ||
Response time (T90) | <20s | ||
Resume time (T10) | <60s | ||
Dimensions | 3.2mm*2.5mm*1.1mm | ||
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