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Air differential pressure switch
Air differential pressure switch
This switch with a potential free changeover contact is used to detect the status of pressure drop across the filters. The N/O contact of the air differential pressure switch is connected to neon lamp to indicate the "filter dirty" status. The switch is silicone diaphragm type with calibrated adjustment knob to facilitate pressure setting suitable for operation over a wide range of temperature from -20?C to 85?C. The maximum operating pressure shall be 50 m bar. Application: adjustable differential pressure switch for monitoring, overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases. Possible fields of application include: monitoring air filters and ventilators; overheating protection for fan heaters; controlling air and fire-protection flaps; monitoring industrial cooling-air circuits; monitoring flows in ventilation ducts; and frost protection for heat exchangers.