1. Description

    TX-Z19D carbon dioxide gas sensor (hereinafter referred to as sensor) is a general intelligent small sensor, which uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air. It has good selectivity, no oxygen dependence, long life, etc.; built-in temperature compensation; serial port output, PWM output, easy to use. This sensor is a high-performance sensor made by combining mature infrared absorption gas detection technology with precise optical path design and excellent circuit design.

2. Appearance and dimension

3. Technical specifications

4.Pin Definition (Terminal)

5.Precautions

 During the welding, installation, and use of the sensor, the optical cavity should be prevented from being subjected to pressure in any direction.

 If the sensor needs to be placed in a small space, the space should be well ventilated, especially the two diffusion windows should be in a well ventilated position.

 The sensor should be away from heat sources and avoid direct sunlight or other heat radiation.

 The sensor should be calibrated regularly, and the calibration cycle is recommended to be no more than 6 months.

 Do not use the sensor for a long time in an environment with high dust density.

 To ensure that the sensor can work properly, the power supply voltage must be kept in the range of (5.0±0.1)V DC, and the power supply current must be no less than 150mA. If it is not within this range, the sensor may fail, the sensor output concentration may be low, or the sensor may not work properly.

 When manually calibrating the zero point or sending a command to calibrate the zero point, it must work continuously for more than 20 minutes in a stable gas environment (400ppm).

 Wave soldering is prohibited for the sensor.

 When using a soldering iron, the temperature must be set at (350±5)℃ and the soldering time must be less than 3S.

 When using a sensor, it is recommended that customers use a soldering socket so that the sensor can be directly plugged in and out for easy maintenance.