Deutsch 
English Kromschröder DG 150UG-3 gas pressure switch for monitoring gas and air pressures, also for biogas, with handwheel for switching point adjustment, can be used as a ''special design pressure switch'', EU-certified.
Technical data:
Setting range: 30-150 mbar
Function: Switches on rising positive pressure (gas/air), negative pressure (air), differential pressure (air-air)
With gold-plated contacts: Yes
Electrical connection: With screw terminals and M16 cable gland, IP 54
Technical data:
Setting range: 30-150 mbar
Function: Switches on rising positive pressure (gas/air), negative pressure (air), differential pressure (air-air)
With gold-plated contacts: Yes
Electrical connection: With screw terminals and M16 cable gland, IP 54