The pressure scanning valve is an instrument used to measure the pressure value of multiple pressure points, which is widely used in wind tunnel tests, flight tests, turbomachinery and other fields. The working principle of the pressure scanning valve is to use a set of silicon piezoresistive pressure sensors, controlled by electronic switches and microprocessors, to achieve rapid scanning and acquisition of individual pressure ports.
However, there are also some problems encountered during the use of pressure scanning valves, such as clogged pipes, sensor drift, thermal errors, etc., which can affect the accuracy of pressure measurement and the life of the equipment. In order to solve these problems, pressure scanning valves usually need to be cleaned and calibrated regularly, and the purge function is a method used to clean the internal pipes of the pressure scanning valve, which can effectively prevent the pipeline from clogging, ensure the accuracy of pressure measurement and the life of the equipment.
The purge function of the pressure scanner is used as follows:
In the control software of the pressure sweep valve, select the purge status and set the purge parameters, such as purge time, purge interval, purge pressure, etc.
Connect the purge air source to the purge port of the pressure scanner, open the purge valve, and start purging.
During the purging process, observe the display screen of the pressure scanning valve, check the pressure value of each channel, if there is any abnormality, you can stop the purging and check whether the pipeline is leaking or blocked.
After the purge is completed, close the purge valve, disconnect the purge air source, switch back to the acquisition state, and continue the pressure measurement.
The pressure scan valve purge function is a simple and effective maintenance method to improve the performance and stability of the pressure scanner valve, extend its service life, and provide reliable data support for pressure measurement. The purge function of the pressure scanning valve can remove dust, moisture, grease and other impurities in the pipeline, prevent the pipeline from being blocked, and keep the pipeline unblocked. Eliminate the differential pressure caused by the backflush airflow, which does not affect the accuracy of the pressure measurement and avoids damage to the sensor due to excessive differential pressure. **Purging does not require disassembling or replacing the tubing, saving time and manpower. Set purging parameters as needed, such as purging time, purging interval, purging pressure, etc., to realize the automation and intelligence of purging.