Types 311.11, 331.11 - Bourdon tube pressure gauge Test gauge series, class 0.6

Applications
For gaseous and liquid media that are not highly viscous or crystallising
Model 311.11: Measuring system Cu-alloy
Model 331.11: Measuring system stainless steel, also for aggressive media
Precision measurement in laboratories
High-accuracy pressure measurement
Testing of industrial type pressure gauges

Special Features
Knife edge pointer for optimal accuracy of reading
Precise movement with wear parts of argentan
Particularly easy-to-read scale due to nominal size 250
Scale ranges up to 0 ? 1,600 bar

Description

Design
EN 837-1
Nominal size in mm
250
Accuracy class
0.6
Scale ranges
Model 311.11: 0 ... 0.6 to 0 ... 600 bar
Model 331.11: 0 ... 0.6 to 0 ... 1,600 bar
or all other equivalent vacuum or combined pressure and vacuum ranges
Adjustment medium
? 25 bar: Gas
> 25 bar: Liquid

Pressure limitation
Steady: Full scale value
Fluctuating: 0.9 x full scale value
Short time: 1.3 x full scale value
Permissible temperature
Ambient:
-40 ... +60 °C
Medium:
+80 °C maximum (model 311.11)
+200 °C maximum (model 331.11)
Temperature effect
When the temperature of the measuring system deviates
from the reference temperature (+20 °C):
Max. ±0.4 %/10 K of full scale value
Ingress protection
IP 54 per EN 60529 / lEC 529

Selected documents