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Differential Pressure Switches
A differential pressure switch is an instrument that converts a differential pressure change between two systems to an electrical signal. When the pressure in one of the systems changes, the internal electrical switch either opens or closes.
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Differential Pressure Range Increasing 
Differential Pressure Range Decreasing 
Set Point Options 

Whitman Controls Corporation 201 Dolphin Road, Bristol CT 06020 Phone: 800-233-4401, Fax: 860-583-5293