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PENN Controls Products Catalog

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P32 Series Sensitive Pressure Switch Description This differential pressure switch is used to sense pressure/air flow in ducts. Refer to the P32 Series Sensitive Differential Pressure Switch Product Bulletin (LIT-125435) for important product application information. Figure 66: P28 Action Diagram Features • easy-to-read setpoint scale • versatile mounting options Applications • pressure/air flow proving with electric duct heaters, humidifiers, and other equipment • maximum pressure/air flow control for variable volume systems • reheat duct powered systems • clogged filter detection • detection of icing of air conditioning coils and initiation of defrost cycle • sensitive pressure settings • dust-tight snap switch 167

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