Manufacturer: Johnson Controls
Category: Electrical Controls
Sub Category: Pressure Controls
P74 Series Differential Pressure Controls
The controls are available for applications sensing air, oil or liquid. Typical applications are proof of flow across a chiller or water cooled condenser, proof of flow in a heating or cooling coil and lube oil pressure sensing on refrigeration compressors. On a proof of flow application the control measures pressure drop across two different points in either a closed water circulating system or a city water to supply system.
These differential pressure controls are for use as operating controls and/or indicating system functions through display lights or panels. They measure the difference in pressure exerted upon its two sensing elements.
Replaces Part Numbers: P74BA-9, CARP74BA-9