1. Description

TZJ06 is a universal and miniaturized laser dust sensor module. Using the principle of Mi scattering, it can detect the dust particles in the air, and it has good consistency and stability through professional algorithm and calibration detection process. The sensor has the ability to output serial port and PWM simultaneously, which makes it easy to use. Small size, easy to integrate applications.

2. Technical specifications

3.Pin Order

Pin Definition：

4.Sensor Size

5.Installation method:

  The dust collection hole is the air inlet of the sensor and needs to maintain good contact with the outside air; the fan installation position is the air outlet of the sensor. When installing and using the sensor, avoid strong airflow interference around the sensor; if it cannot be avoided, try to keep the external airflow direction perpendicular to the internal airflow direction of the sensor.

  When designing the detection cavity of the whole machine, the effective area of the sensor sampling port must be fully considered to ensure the smoothness of the sampling air path as much as possible. Small sampling area and excessive air resistance will seriously affect the accuracy of sensor data.

6.Precautions

1. Do not remove the shielding cover of the sensor and the fixing screws inside the sensor, because the shielding cover of the sensor is connected to the power supply ground inside the sensor through the internal spring. If the shielding cover of the sensor is removed, the anti-interference ability of the sensor will deteriorate, the output value of the sensor will jump, and the performance of the sensor will deteriorate. In addition, pay attention to the metal shielding cover of the sensor, which should avoid contact with other external circuits or conductive parts to reduce the impact of external interference on the sensor.

2. Excessive impact or vibration will affect the accuracy and life of the sensor detection value, so the sensor should be prevented from falling or vibrating during installation and use.

3. This sensor is suitable for the detection of dust particles in ordinary indoor environments. The actual use environment should try to avoid oil smoke environment, excessive dust particles, high humidity environment, such as: kitchen, bathroom, smoking room, outdoor environment, etc. If used in such an environment, the user's equipment should be added with corresponding protective measures to prevent sticky particles or large particles from entering the sensor and forming accumulation inside the sensor to affect the performance of the sensor. (For example: in an environment with flocs or fibers, a corresponding coarse filter should be added in front of the air inlet of the sensor to prevent flocs or larger debris from entering the sensor and blocking the sensor optical path, thereby affecting the sensor's detection accuracy.)

4. The fan is the air outlet, and the dust collection hole is the air inlet. During the use of the sensor, it should be avoided as much as possible to place the sensor directly inside the purifier's own air duct. If it cannot be avoided, an independent space structure should be set up for the sensor installation position. The airflow direction is shown in Figure 9. The sensor should not be impacted by the airflow in the direction of the red arrow. There should be no obstructions within 2cm around the sensor fan outlet. In this independent space, the airflow at the sensor outlet should be prevented from directly flowing back to the air inlet, thereby affecting the accuracy of the sensor detection value.

5. Under normal working conditions at room temperature and pressure, the laser, a key component of the sensor, can work continuously for more than 10,000 hours. The sensor's service life can also be greatly increased by setting the sensor's sleep mode and working interval. The maximum cumulative working life of the sensor can reach more than 3 years. For detailed operation methods, refer to the user interface instructions, or contact our technical support personnel by phone or email.

6. The sensor data mentioned in this manual is to ensure the consistency between individual sensors leaving the factory, and third-party testing instruments or data are not used as comparison standards. If the user hopes that the final measurement results are consistent with those of third-party testing equipment, the user can perform data fitting corrections based on the actual collection results.