Features

• 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
• - Monitoring industrial cooling-air circuits
• - Overheating protection for fan heaters
• - Monitoring flows in ventilation ducts
• - Controlling air and fire-protection flaps

Principle of Operation

• With this pressure switch the switching pressure can be adjusted without a pressure gauge using a scaled adjustment knob. The switching differential can also be adjusted with a screwdriver.
• Switching pressure speifications apply to vertical installation which is also the recommended position with pressure-pipe connections pointing downwards. If the switches are installed horizantally with AMP connection terminals uppermost, the switching valves are approx. 20 Pa higher.