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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Approvals
Explosionsschutz gemäß ATEX 2014/34/EU
Zündschutzart Ex II 2 GD c Tx BVS 12 ATEX H/B 079 DEKRA EXAM GmbH, benannte Stelle 0158
Konformitätserklärung
Druckgeräterichtlinie 2014/68/EU
Construction
similary EN 837-1
Case
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
Dial
Aluminium white,
scale and lettering black
Window
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
+100°C
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