The duct air velocity sensor plays a key role in monitoring the air velocity in the pipeline system. Its compatibility and adaptability with the pipeline system are directly related to the accuracy of the measurement and the stable operation of the system.
First of all, the adaptation of the pipeline size and the sensor is an important consideration. The probe size of the sensor should match the inner diameter of the pipeline. If the probe is too large, it may interfere with the normal flow of the airflow, cause local airflow turbulence, and affect the measurement accuracy; if the probe is too small, it may not be able to accurately capture the airflow information of the entire pipeline cross section. For example, in large-diameter industrial pipelines, specially designed large-size probe sensors are required to ensure that the airflow conditions can be fully reflected.
Secondly, the pipeline material has an impact on the compatibility of the sensor. Pipes of different materials, such as metal, plastic, fiberglass, etc., have different thermal conductivity, electrical conductivity and surface roughness. For wind speed sensors that work on the principle of heat conduction, the heat loss in metal pipes and plastic pipes with good insulation is different, which will lead to deviations in the measurement results. Therefore, the duct air velocity sensor needs to be calibrated according to the pipeline material or special protection and compensation measures should be adopted to ensure the accuracy and reliability of the measurement.
Furthermore, the adaptation of the airflow characteristics in the pipeline and the sensor cannot be ignored. The temperature, humidity, pressure and whether the airflow contains impurities and particles will affect the performance of the sensor. High temperature, high humidity or dusty airflow may damage the sensor's sensitive components, reducing its service life and measurement accuracy. For example, in the flue of a coal-fired power plant, the airflow temperature is high and the dust content is large. It is necessary to select a high temperature and dust-resistant duct air velocity sensor and equip it with a corresponding purge device to remove the dust attached to the probe.
In addition, the vibration of the pipeline system is also related to the sensor compatibility. Strong pipeline vibration may loosen or damage the sensor, affecting the measurement stability. Shock-absorbing measures such as rubber pads and shock-absorbing brackets should be used during installation to ensure that the duct air velocity sensor can still work normally in a vibrating environment.
In terms of electrical connection, the sensor and the electrical equipment of the pipeline system must have good compatibility. The signal output type and voltage and current specifications of the sensor should match the monitoring instrument and control system of the pipeline system to avoid signal transmission errors or electrical interference and ensure effective data collection and processing.
However, it is often difficult to completely avoid various incompatibility issues in practical applications. This requires full consideration of the operating conditions of the pipeline system during the design phase, rational selection of appropriate wind speed sensors, and careful calibration and optimization during the installation and commissioning process to minimize the adverse effects of compatibility issues and ensure the accuracy of pipeline wind speed measurement and the efficient and stable operation of the pipeline system.
