The 836T-T261JX40 controller is an Allen-Bradley/Rockwell Automation pressure controller. It is used with different industrial applications like lubricant and coolant pressure control, air compressors, and hydraulic pressure control applications. This pressure controller is housed inside a Type 1, 4, and 13 rated enclosure. It supports a maximum line pressure up to 200 PSI. This T Style controller variant comes with external bellows made of high quality Type 316 stainless steel. The single-bellows design of the assembly offers maximum performance in a compact size. The 836T-T261JX40 controller uses a DPDT 4-circuit contact block. The 4-circuit contact block can be arranged for double-pole double-throw operation or other operations with the same polarity. The unit comes with a high-performing piston that is well-fitted for oil and hydraulic fluid applications. It also helps reduce piston friction. 

The environmental temperature should always be in the range of -30 and 66 degrees Celsius for operation for the Allen-Bradley/Rockwell Automation 836T-T261JX40 controller. The 836T-T261JX40 controller can work with both open and closed electrical circuits. An actuator is present inside this pressure control unit that takes in the pressure to the bellows or piston. As the pressure rises, the actuator will have force on the main spring. The main spring transfers the motion to the contact block which in turn displaces the contact. This causes the trip to occur. The front side of the 836T-T261JX40 controller comes with a range scale and an indicator with english and metric measuring units. A captive cover chain is present on the front side of the controller  along with an external differential adjustment screw.