BPHT3351 Capacitive Differential Pressure Transmitter For Industrial Processes

Working Principle of capacitive differential pressure transmitter:
 

 
As indicated in the working principle, the outside pressure or differential pressure will cause some change in the sensor capacitance value. Through the digital signal conversion, it will change into the frequency signal, which is sent to the microprocessor. After the
calculation by microprocessor, a current control signal will be output to the current control circuit, converted into analogue 4-20mA current
output. Meanwhile, the microprocessor is responsible for the interactive and other actions (display and setting). The communication port used for digital communication needs the special port of our company. HART module will realize the transmitter HART communication.
 
 
Measurement Ways of capacitive differential pressure transmitter:
 
Fluid Level Measurement:
In the measurement of fluid flow, the pressure taps should be breached on the side of the process conduit to avoid the sediment of dregs. Meanwhile, the transmitter should be mounted beside or under the pressure taps, to prevent the air bubbles from being discharged into the process conduit.