With advanced dual-beam NDIR technology and 100% factory matrix calibration, SJH Series achieves high accuracy over full temperature range and long-term stability, and it can be integrated into fixed and portable gas detectors to provide reliable safety alarms.
The miniature NDIR CH4 sensor SJH is based on NDIR technology that is superior to thermal catalysis and semiconductor technology.
It can detect 0 to 100%Vol methane (CH4) concentration, boasting the advantages of a compact industrial four-series package, accurate measurement, reliable long-term stability, simultaneous output of voltage and serial port, and easy integration into the detection system.
It is widely used in gas detection and analysis in oil and gas, chemical, coal, laboratory and other fields to meet the different requirements of industrial field and laboratory measurement.
Dual-beam NDIR technology
Linearization and factory calibration for accurate digital output
Matrix calibration to ensure high accuracy over full-temperature
Embedded temperature and humidity compensation
Innovative high humidity alert mechanism
Resistant to cross-interference
Long lifespan over 10 years
| Principle | NDIR |
| Measurement Gas | CH4 |
| Measurement Range | 0 ~ 5%Vol, 0 ~ 100%Vol |
| Accuracy | 0 ~ 1%Vol: ≤±0.06%Vol, 1% ~ 100%Vol: ≤±6% of reading |
| Resolution | 0.01%Vol |
| Response Time | T90<25s |
| Output | UART_TTL (2.5-3.3V) / 0.4-2V DC |
| Working Condition | -40 ~ 70℃, 0~95%RH (non-condensing) |
| Storage Condition | -40 ~ 85℃, 0~95%RH (non-condensing) |
| Power Supply | 3.3～5.5V DC |
| Working Current | 55 ~ 60mA |
| Life Span | >10 years |
| Ex-proof Level | Ex ia IIC T4 Ga certificate, T6 compliance |
| Dimension | Dia20*H19mm or Dia20*H16.6mm |
Contact Us to Explore Innovative Methane Gas Sensing Solutions!
inquiry@gassensor.com.cn
+86-27-81628827
Fenghuang No.3 Road, Fenghuang Industrial Park, Eastlake Hi-tech Development Zone, Wuhan, 430205, China 
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