Where is the feedback bellows of a pneumatic DP cell located?

The feedback bellows of a pneumatic differential pressure (DP) cell is located in the balancing section. This component plays a crucial role in maintaining the accuracy of the measurement by balancing the diaphragm's output against the input pressures.

In a typical DP cell setup, the balancing section is designed to compensate for any pressure variations between the measurement points. The feedback bellows helps to provide feedback on the position of the diaphragm by expanding or contracting as the pressure changes. This action helps to ensure that the transmitted output accurately reflects the differential pressure being measured.

By keeping the system in equilibrium, the feedback bellows significantly enhances the performance and reliability of the DP cell. This positioning allows for precise adjustments and corrections to be made within the device, leading to more accurate pressure readings.