290D dp indicating switch
The DPU torque tube rotor’s MODELS 288A/288C/290D rotation is paired by connecting the link to move the pointer across the scale board within the switch box. An actuating cam, connected directly to the engine of the thrust tube, rotates with the motion of the shaft. Two handheld tank roller / actuator design units, one for each button, respond to the thrust pipe turn by pressing and locking the buttons as they move on and off the engine. With raised and small panel main changes, the DP levels at which the buttons are actuated can be adapted on the scale panel.
The explosion proof Model 290D of the weatherproof Models 288A, 288C and are DP signaling buttons. The 288A and 288C have a waterproof NEMA-4 aluminum panel (finished with black resin weatherproof). In the lens, an elastomer band is given with a cap lens to prevent unexpected ruptures. The circuit functions as a display of moisture, smoke and dust-free atmosphere to notify and change the system between the bezel and the box.