Shenwei Electronics BH551 infrared nitrogen oxide gas sensor module BH551
The quotes are provided by Several Partner Companies
- Prices： Request for a Quote for Further Details
- Model ： BH551
- Category： Gas Sensors
- Brand ： Shanghai Shenwei Electronics
- Delivery Time： Request for a Quote for Further Details
- Manufacturer： Shanghai Shenwei Electronics
Products
BH551 is a gas sensor module using the NDIR infrared absorption detection principle. The concentration is determined based on the absorption of nitric oxide gas at 5.32um and nitrogen dioxide at 6.42um. BH551 uses MEMS light source,special structure optical cavity and dual-channel detector to achieve spatial dual-optical path reference compensation,and the microprocessor performs signal acquisition,processing and output. BH551 has good selectivity,high sensitivity,no oxygen dependence,life and low power consumption; built-in temperature sensor,which can perform temperature compensation; it also has UART,485 output and analog current/voltage output; the alarm point can be set,Convenient for customers in various applications.
Single tube (NO2)
Double tube(NO)
working conditions
| describe | symbol | numerical value | unit |
| Storage temperature | Tstg | -10 to 60 | °C |
| Operating temperature | TA | 0 to 50 | °C |
| Working humidity | HA | 0 to 90 no condensation | % RH |
| work pressure | PA | 0.8 to 1.2 | ATM |
Electrical characteristics
| describe | symbol | smallest | typical | maximum | unit |
| powered by | Vs | 9 | 12 | 30 | V |
| Maximum working current | Imax | 100 | 120 | 150 | mA |
Performance parameters
| index | gas | Range/ppm | Resolution/ppm | Relative error | absolute error | Remark |
| zero drift | NO | 5000 | 1 | ±4% | ±20ppm | Just satisfy one of them |
| NO2 | 1000 | 1 | ±3% | ±20ppm | Just satisfy one of them | |
| Range drift | NO | 5000 | 1 | ±4% | ±25ppm | Just satisfy one of them |
| NO2 | 1000 | 1 | ±3% | ±20ppm | Just satisfy one of them | |
| Anti-interference | NO | 5000 | 1 | ±25ppm | ||
| NO2 | 1000 | 1 | ±3% | |||
| Indication error | NO | 0-4000 | 1 | ±4% | ±20ppm | Just satisfy one of them |
| 4000-5000 | 1 | ±8% | ||||
| NO2 | 1000 | 1 | ±3% | ±20ppm | Just satisfy one of them | |
| Repeatability error | Calibration deviation and relative calibration deviation shall not exceed 1/2 of the module of the allowable error of the indication value | |||||
| T90 | ≤4.5S | |||||
