MH-712B Infrared CO2 Sensor
The MH-712B carbon dioxide gas sensor is a general-purpose intelligent infrared gas sensor (hereinafter referred to as the sensor), which uses the principle of non-dispersive infrared (NDIR) to detect carbon dioxide in the air. It has good selectivity and no oxygen dependence. Stable performance, long life; built-in temperature compensation. The sensor is a compact and high-performance sensor made by closely combining the mature infrared absorption gas detection technology with micro-machining and sophisticated circuit design.
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Sensor Features
High sensitivity, high resolution, low power consumption, fast response time;
Provide UART, analog voltage and other output methods;
Temperature compensation, excellent linear output;
Excellent stability;
long lasting;
Anti-water vapor interference, no poisoning;
main application
The infrared sensor can be widely used in industrial field instrumentation, industrial process and safety protection monitoring.
Technical indicators
|
Product number |
MH-712B |
|
detect gas |
carbon dioxide |
|
Operating Voltage |
4.5～5.5 V DC |
|
Average current |
＜ 100 mA |
|
interface level |
3.3 V |
|
Measuring range |
Optional within the range of 0 to 5% Vol (see Table 2 for details) |
|
output signal |
UART |
|
0.4～2 V |
|
|
Preheat time |
＜2min |
|
Response time |
T90 ＜ 30 s |
|
Operating temperature |
-40～70 ℃ |
|
Working humidity |
0～95% RH （no condensation） |
|
Dimensions |
Φ39×44 mm |
|
weight |
280 g |
|
life |
＞ 5 year |
|
Protection class |
IP54 |
Table II:
|
gas name |
molecular formula |
range |
precision |
Remark |
|
carbon dioxide |
CO2 |
0～2000 ppm |
±(50ppm+ |
Temperature compensation |
|
0～6000 ppm |
Temperature compensation |
|||
|
0～1% Vol |
Temperature compensation |
|||
|
0～3% Vol |
Temperature compensation |
|||
|
0～5% Vol |
Temperature compensation |
Note: Product parameters are subject to change without prior notice
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patent certificate
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