The Allen-Bradley 836T-D452JX81X15 Electromechanical Differential Pressure Controller is an 836 series electrical switch that monitors 2 different pressure signals and, according to the difference of pressure between those signals, trips an electrical circuit to allow an external operation to occur, such as turning an alarm off, powering up a pump, or opening or closing a valve. The most common industrial applications for the Allen-Bradley 836T-D452JX81X15 Electromechanical Differential Pressure Controller are in closed-loop instrumentation control algorithms that control variables such as the flow of water through a pipe, the level of liquid in a tank, and the velocity at which a hydraulic machine moves from one point to another. There are 2 independent pressure input ports, each of them featuring copper alloy bellows. These bellows provide a highly sensitive transducing element, which at the same time is resistant enough to guarantee hermetic isolation to the device as long as there are no corrosive substances in the operating environment.

The Allen-Bradley 836 series 836T-D452JX81X15 Electromechanical Differential Pressure Controller comes from the factory with a tough metal Type 1, 4, and 13 enclosure that is manufactured to withstand most clean and contaminated industrial atmospheres. This differential pressure switch can be installed in an upright position, in a horizontal position, inside the panel, or by using standalone support. The Allen-Bradley 836T-D452JX81X15 Electromechanical Differential Pressure Controller can safely operate in locations with an operation temperature range between 0 and 60 degrees Celsius (32 and 140 degrees Fahrenheit). The relative humidity level of the application work site should always remain between 5 and 95% (non–condensing). The differential pressure switch setpoint can be easily configured by turning an adjustable screw that is located on the front side of the device.