Differential pressure gauge with alarm contacts, stainless steel Typ: DM20

Static pressure rating 25 bar
NG 100 and 160
without liquid filling

Service intended:
Suitable for gaseous and liquid, non-crystallizing media that will not obstruct the pressure system.
Scale range  must be selected in consideration of the highest static pressure applied. These alarm contacts are intended to make or break am electrical control circuit relative to the position of the instruments pointer. The functions of the different contacts may be chosen depending on application. Points of contact actuation are adjustable over the full extension of the scale graduation. For points with high, dynamic load, fast load alternation and pressure peaks or vibration we recommend a special oil filled type (only available with round case model).

Fields of application:
● pneumatics, hydraulics
● heating and air conditioning technology
● Filter measurements

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similary EN 837-1
Ø 100 and 160 mm stainless steel
Protection class
IP 54 per EN 60529 / IEC 529
Pressure connection
2 x G1/2B, parallel behind, stainless steel 361L identified + and -
Pressure element
Diaphragm element stainless steel 316L, Diaphragm FPM/PA, Pressure chambers, 316Ti, with exhaust
stainless steel
aluminium, black
Aluminium white, scale and lettering black
Laminated safety glass
Zero point adjustment
Adjusting screw in dial
Accuracy class
class 1,6 / 2,5
Temperature error, Tref 20°C
rising temperature: +0,3 % of FS/ 10 K Falling temperature: -0,3 % of FS/ 10 K
Ambient temperature Tmin / Tmax
-25 ... +60 °C
Medium temperature Tmax
Working pressure
Steady : 1,0 x full scale value Fluctuating : 0,90 x full scale value Overpressure safety: + and - pressure chambers, maximum 25 bar
Static pressure rating
maximum 25 bar
Optional extras
see Technical Details
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