Description
The Johnson Controls P70DA-63 is a pressure switch essentialinstrument in measuring and regulating the pressure in methyl refrigeration systems that utilize ammonia as the refrigerant. It Open-High switch and can control pressure with accuracy within 20 to 100 psi. This pressure switch is operated in a way that requires the ammonia pressure to be constantly measured. The switch triggers a response when pressure is above the top limit of 100psi, normally by sounding a bell or initiating a shutdown process. This used mainly in HVAC for industrial refrigeration, ensures proper pressure to ensure the safety and efficiency of the systems.
