Johnson Controls P-8000 Proportional or Two-Position Pressure Controller

The P-8000 Pressure Controller is designed for a wide range of pressure control applications. The pressure sensing line can be located where extreme conditions do not permit controller mounting or where operational adjustments to the controller would be inconvenient. This instrument is ideally suited for installations that require the controller to be mounted on a local control panel.

Shock and vibration tests have proven the durability of the P-8000. The use of flexure levers reduces hysteresis and friction. The P-8000 is available with a low pressure “L” or a high pressure “H” element assembly.

This controller can be made to function as a Direct Acting or Reverse Acting instrument by changing the position of the patented sliding control port. A Direct Acting controller increases the output pressure signal on an increase in the measured pressure. A Reverse Acting controller decreases the output signal on an increase in the measured pressure. Repositioning the sliding control port will also change the sensitivity on proportional models and the differential on twoposition models.

Sensitivity is the change in output pressure per PSI change in measured pressure. Differential is the amount of change in measured pressure needed to change the output pressure from maximum to minimum or vice versa.