The Allen-Bradley 836T-D452JX19 Electromechanical Differential Pressure Controller is a tough piece of 836 series pressure control equipment that has been designed to offer a long-term, trouble-free operation lifecycle while operating in tough indoor and outdoor environments in industrial applications. It is intended as a standalone controller that is able to measure the pressure difference between its sensing inputs, and activating or deactivating a pair of electrical contacts according to predefined adjustments made by the final users. The Allen-Bradley 836T-D452JX19 Electromechanical Differential Pressure Controller operates by sensing 2 independent pressure signals, each of them connected into a separate set of copper alloy bellows designed to isolate the medium being measured (which could be a gas or a liquid) from the measurement mechanism itself. The instrument is then capable of subtracting these 2 pressure signals in order to obtain a differential pressure calculation that is continually compared with the user-defined setpoint.

The Allen-Bradley 836 series 836T-D452JX19 Electromechanical Differential Pressure Controller features 2 SPDT (Single-Pole, Double-Throw) electrical contacts which open and close according to the user’s specifications when the external adjustment knob is set at the predefined setpoint value. These contacts will be triggered when the measured differential pressure value equals or exceeds the established setpoint threshold. Some of the most common applications of the Allen-Bradley 836T-D452JX19 Electromechanical Differential Pressure Controller are standalone pressure level measurement and control in liquid storage tanks, measurement of the difference of pressure between the 2 sides of an orifice plate (commonly used as a low-cost flow measurement mechanism), and applications in machine tools for lubricant and coolant pressure measurement and control.