The Foxboro 43 AP pneumatic controller is a versatile process instrument controller that can be used to control pressure, temperature, flow, and level. It continuously detects the difference between a process measurement and its set point and produces an output air signal that is a function of this difference and the type of control.

The output signal is transmitted to a control valve or other control device. The process measurement, set point, and output signal are indicated on the controller. The controller also has reset bellows and a derivative tank that help improve system response to a slow process, which is important when measurement must be maintained exactly at control point.

The Foxboro 43 AP pneumatic controller provides process industries with a highly dependable control solution with a wide variety of control modes. For example, on-off, proportional, proportional plus derivative, proportional plus integral (reset), proportional plus integral plus derivative, differential gap, and automatic shutdown actions are all available.

Bayport Technical's Foxboro 43 AP Controller Cutaway (128-FAPC) allows individuals to see and identify the internal components of the controller. NOTE: Pictures of cutaway models are representative of our products; actual equipment, size, and color scheme may vary with each piece according to availability and customer preference.