These field mounted indicating controllers have a measuring element for process variables and an indicating controller unit common to all models. By changing the measuring element it is possible to measure and adjust basic process variables for temperature, pressure, flow rate, and liquid level, as well as standard pneumatic pressure signals (20 to 100 kPa).
This differential pressure indicating controller (model number KFDB***) converts changes in differential pressure to mechanical changes using a torque arm and torque tube, and indicates and adjusts the flow rate.

Parameter Name	Parameter Value
Other characteristics	differential