Adjustable differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, nonaggressive 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
* Frost protection for heat exchangers