Differential pressure gauges with diaphragm element and alarm contacts


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 an 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).





Technical Details

Operating instructions Type I Inductiv contact
Operating instructions Type E Electronic contact

Operating instructions Type M Magnetic snap-action contact

Operating instructions Type S Sliding contact
Alarm contacts
Sliding contact
Magnetic snap-action contact
Electronic contact for SPS
Inductive contact
Pneumatic contact
Technical Data
similarly EN 837-1
Ø 100 and 160 mm, stainless steel
IP 54 per EN 60529 / IEC 529
Pressure connection
2 x G1/2B, parallel behind, st.st. 316L 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
1,6 / 2,5
Temperature error Tref 20°C
Rising temperature : +0,3% FS / 10 K
Falling temperature : -0,3% FS / 10 K
Ambient temperature Tmin / Tmax
- 25 ... + 60°C
Medium temperature Tmax
Working pressure
Steady : 1,0 x full scale value
Fluctuating : 0,9 x full scale value
Overpressure safety:
+ and - pressure chambers: maximum 25 bar
Static pressure rating
maximum 25 bar
Optional extras
see: Technical Details