Dust sensor test chamber's effect on sensor detection

Dust sensors, also known as particulate matter sensors, can detect the concentration of dust particles in the surrounding air. The dust sensor test chamber is used to assess the performance of dust sensors, primarily for calibration purposes to determine product performance.

Dust Sensor Test Chamber Model: Ring Instrument HYBD Series

Calibration Method: Sensor Calibration

How to Calibrate?

The calibration of dust sensors in a test chamber can be either static or dynamic, depending on the type and application of the sensor. Since obtaining a known dynamic signal source is difficult, dynamic calibration is often based on static calibration.

A long-term stable reference with higher precision than the sensor being calibrated is essential for calibration, and the precision of this reference must be calibrated using a higher-level standard, known as precision transfer. For instance, in force value transfer systems. According to the calibration procedures set by the metrology department, only the standard device of the next higher level can be used to calibrate the lower-level sensors.

The process is as follows:

The full-scale standard input quantity of the sensor is divided into several discrete points, with the values at each point serving as the standard input values.

2. Gradually input standard values from small to large, and record the corresponding output values once the output becomes stable.

3. Gradually input standard values from larger to smaller, and record the corresponding output values once the output stabilizes.

Step 2 and 3 outline the process, which involves repeatedly testing the sensor for forward and reverse stroke cycles. The obtained input and output data should be tabulated or plotted as curves.

5. Conduct necessary analysis and processing of test data to determine the static characteristic indicators of the sensor.