Working principle of pressure sensor in constant pressure water supply system
The pressure sensor is to measure the pressure of the water supply pipe, the pressure is low, the frequency converter raises the frequency, the pressure is higher, the frequency converter lowers the frequency!
The pressure signal is changed to a standard quantity signal
The pressure sensor is a diffusion Wheatstone bridge on silicon substrate, voltage resistance effect of bridge wall resistance value changes and generates a differential voltage signal. The signal is transformed into a standard 4~20mA/0~5VDC/0~10VDC signal by a special amplifier and then converted by voltage and current.
