The Allen-Bradley 836T-D452JX20 Electromechanical Differential Pressure Controller is an 836 series industrial pressure device that is used for sensing 2 different pressure ratings simultaneously, calculating the difference between them, and responding according to configuration parameters that were predefined by the users. It comes from the factory with 2 independent input ports designed to receive external tubing that is carrying pressure signals from different types of mediums such as compressed gas and hydraulic fluids. The Allen-Bradley 836T-D452JX20 Electromechanical Differential Pressure Controller applies a mathematical comparison between both of the pressure signals and determines if the electrical circuits connected to it need to be open or closed in order to maintain the controlled pressure variable as close to the setpoint as possible. The differential pressure setpoint is externally adjustable by using the built-in manual adjustment screws to determine the trip and reset pressure values.

The Allen-Bradley 836 series 836T-D452JX20 Electromechanical Differential Pressure Controller features a couple of independent SPDT (Single-Pole, Double-Throw) electrical contacts that are designed to engage or disengage whenever the pressure values reach the trip threshold and then to go back to the resting position when the differential pressure returns to the preset reset value. The Allen-Bradley 836T-D452JX20 Electromechanical Differential Pressure Controller is suitable for panel mounting or stand-alone mounting and it comes from the factory with an enclosure that is a Type 1, 4, and 13 enclosure that is specially designed and manufactured for industrial use in both indoors and outdoors applications. The maximum voltage that this pressure switch is able to withstand is 600 Volts AC, with a maximum current rating of 5 Amps.