Products
CO2 Sensor
Application:
HVAC and indoor air quality monitoringProduct characteristics:
High sensitivity, high resolution, fast response timeDescription
TX721-A2 infrared carbon dioxide gas sensor is a general-purpose intelligent infrared gas sensor (hereinafter referred to as sensor). The sensor uses the non-dispersive infrared (NDIR) principle to detect CO2 in the air. The sensor has no oxygen dependence, stable performance and long life. Built-in temperature compensation. The sensor is a compact and high-performance sensor made by closely combining mature infrared absorption gas detection technology with micro-machining and sophisticated circuit design.
Specifications
| Project | TX721-A2 |
| Detected gas | CO2 |
| Working voltage | 3.6～5 .0V DC |
| Average current | ＜ 85 mA |
| Maximum measurement range | 0～10% Vol |
| Interface level | 3.0V |
| Output signal | UART 0.4～2 .0V |
| Preheating time | 3 min |
| Response time (T90) | T90<30S |
| Temperature range | -20℃～60 ℃ |
| Humidity range | 0～95% RH |
| Dimension | Φ20×22.4mm |
| Weight | 35 g |
| Life span | ＞ 5 years |
| Levels of protection | IP54 |
| Parameters of the power supply terminals and communication terminals | Ui=7.5VDC，Ii=265mA，Pi=0.5W， Ci=10 μF， Li=0mH |
Common range and accuracy
| Gas name | Molecular formula | Detection range(Analog Output) | Range (digital output) | Accuracy | Remarks |
| carbon dioxide | CO2 | 0-2000PPM | 0～Full scale 400ppm～Full scale can be customized | ±(50ppm+5% reading value) | Temperature compensation |
| 0-6000PPM | |||||
| 0-1% vol | |||||
| 0-3% vol | |||||
| 0-5% vol |
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