Danfoss 060B215091 MP54 Differential Pressure Control 1/4" Flare 45-Sec Delay

The Danfoss 060B215091 MP54 is a differential pressure control that measures pressure variation in HVAC systems: it is fitted with a 1/4 inch flare connection and a 45 sec time delay. The control operates by determining the pressure difference between two points in a system. When the difference attains a specific value, the switch opens or closes the electrical contact and consequently engages in such activities as fan control or compressor. The 45-second wait avoids such cycling. This differential pressure control is common in air handling units, fan coil units, and other equipment of HVAC systems. (filter), filter condition monitoring; airflow; protection from pressure/air flow.