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Kromschroder DG Gas Pressure Switches


DG Switch Series for Gas and Air Pressure







  • Monitoring of gas and air pressures (positive, negative and differential pressures)
  • EC type-tested and certified pursuant to EN 1854 and class “S”
  • DG..T: FM approved and UL listed
  • Certified pursuant to GOST-R and AGA
  • Certified for systems up to SIL 3 and PL e
  • Pressure switch with internal lock and manual reset
  • Suitable for biologically produced methane (can be used on pipes with Zone 2 explosive atmospheres without isolating amplifier)
  • With approved isolating amplifier for Zone 1 and 2 hazardous areas
  • RoHS 2002/95/EC
  • DG..S: special version available for NH3 and O2



Description and Part Numbers


The gas pressure switch DG monitors extremely low pressure differentials and triggers switch-on, switch-off or switch-over operations if a set switching point is reached. The switching point is adjustable via a hand wheel. It monitors positive and negative gas pressures on various industrial gas and air appliances, such as boiler fan monitoring and differential pressure monitoring in firing, ventilation and air-conditioning systems.


Use the Tables below to determine the specification you desire for your Pressure Switch. Then Click here to Obtain a quote on price and estimated delivery


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DG1,5 DG6 DG10 DG12 DG18 DG30 DG50 DG120 DG150 DG400 DG450 DG500 1,5 6 10 12 18 30 50 120 150 400 450 500 DG1,5 DG6 DG10T DG12T DG18T DG30T DG50T DG120T DG150T DG400T DG450T DG500T DG10HT DG12HT DG18HT DG30HT DG50HT DG120HT DG150HT DG400HT DG450HT DG500HT DG10NT DG12NT DG18NT DG30NT DG50NT DG120NT DG150NT DG400NT DG450NT DG500NT Negative pressure, adjusting range -1,5 to -0.5/+0.5 to +3 mbar Adjusting range 0.4 to 6 mbar Adjusting range 1 to 10 mbar Negative pressure, adjusting range -12 to -1/+1 to +7 mbar Negative pressure, adjusting range -2 to -18 mbar Adjusting range 2.5 to 30 mbar Adjusting range 2.5 to 50 mbar Negative pressure, adjusting range -10 to -120 mbar Adjusting range 30 to 150 mbar Adjusting range 50 to 400 mbar Negative pressure, adjusting range -80 to -450 mbar Adjusting range 100 to 500 mbar wc