Shenwei Electronics NO2 NO2 gas sensor BH751
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- Model ： NO2
- Category： Gas Transducer
- Brand ： Shanghai Shenwei Electronics
- Delivery Time： Request for a Quote for Further Details
- Manufacturer： Shanghai Shenwei Electronics
Products
BH751-NO2 is a gas sensor based on the NDIR infrared absorption principle. It uses a patented multi-reflection gold-plated cavity,imported light source,dual-channel detector and built-in temperature sensor to achieve dual optical path reference compensation and temperature in space. Compensation; microprocessor performs signal acquisition,processing and output. BH751-NO2 has good selectivity,no oxygen dependence,excellent performance,low loss and life.
BH751-NO2 has UART output mode and analog voltage output,and can also customize RS485 output according to customer needs. This product provides zero-point calibration,sensitivity calibration and clean air calibration commands,and provides customers with a manual calibration MCDL pin to facilitate customers to perform relative zero-point calibration of the sensor module using outdoor free-flowing clean air.
pump suction
Diffusion type
Electrical characteristics
| describe | symbol | smallest | typical | maximum | unit |
| powered by | Vs | 11 | 12 | 24 | V |
| Maximum working current | Imax | 80 | 135 | 148 | mA |
Performance parameters
| Detect gas | NO2 |
| Detection principle | NDIR |
| Measuring range | 0-1000ppm |
| resolution | 1ppm |
| measurement accuracy | ±4% of reading |
| Repeatability | 2% reading |
| Preheat time | <5 minutes |
| Signal output | UART,4-20mA,RS-485 (can be customized) |
| Operating temperature | 0～+45 ℃ |
| Working humidity | 0-95%RH (non-condensing) |
| Response time | T90<40 seconds |
structure size
Diffuse type (mm): 83*Φ48,M20*1.5 external thread interface
Pump suction type (mm): 107*Φ48,M20*1.5 external thread interface
