Technical specifications
16
Bourdon tube, capsule, diaphragm, spring diaphragm pressure gauges
Table 2: Technical specifications Bourdon tube pressure gauge with
clamp type chemical seal
Parameter
Value
General specifications
Degree of protection
> 25 bar = IP 65 (as per EN 60529)
≤
25 bar = IP 54 (as per EN 60529)
Ranges
0.6-40 bar
Permissible operating
pressure
Max. ¾ x full scale value
Overpressure safety
Full scale value
Connection
Clamp as per ISO 2852
Nominal diameter
DN 1", DN 1½", DN 2", DN 2½", DN 3"
Surface roughness
Ra = 0.8 (wetted surfaces)
Accuracy
Cl. 1.6 (as per EN 837-1) at +20 °C;
cl. 1.0 on request
Mounting position
Vertical (NL90 ±5° as per DIN 16257)
Materials
All wetted parts
316 L (1.4404/1.4435)
Pressure gauge connec-
tion
1.4571/1.4404
Housing/ crimped bezel
1.4301
Filling plug
PUR
Window
Safety glass/polycarbonate
Housing seal
NBR/PUR
Filling liquid
Paraffin oil or silicone oil, (FDA-
compliant)
Operating temperature range
Ambient
-20 °C to +60 °C
Fluid
+80 °C (when mounted: short-term
+140 °C for sterilisation)