Differential pressure switch used for Air and other non-combustible, non-aggressive ... non-combustible, non-aggressive gasesMonitor overpressure, vacuum and differential pressure for air and compatible gases.Possible applications are:monitor air ... 140g with bracket, 90g without bracketProtection: IP54 with coverInstallation: vertical, pressure ports P1 and P2 downward.This is the factory-calibrated ...