Deutsch 
English DG 500UG-3Z Gas pressure switch for monitoring gas and air pressures, also for biogas, with handwheel for handwheel for setting switching points, can be used as a ''special design pressure switch'', EU-certified.
Technical data:
Setting range: 100-500 mbar
Function: Switches on increasing overpressure (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
Special version: Measuring nozzle screw glued
Technical data:
Setting range: 100-500 mbar
Function: Switches on increasing overpressure (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
Special version: Measuring nozzle screw glued