DESCRIPTION
The mechanical model 212.20 Bourdon tube pressure gauge is constructed with a case from stainless steel and wtted parts fom copper alloy.
The model 212.20 meets the requirements of the international industry standard EN 837-1 for Bourdon tube pressure gauges.
Frequent measuring points are found in the machine building, plant construction and building service industries. The model 212.20 can also be used in refrigeration applications.
The cases are available in nominal sizes of 100 and 160 mm and fulfil IP54 ingress protection. With an accuracy class of 1.0, this pressure gauge is suitable for the process industry.
The modular design enables a multitude of combination of process connections, nominal sizes and scale ranges. This high varience enables universal use of the instrument in the industrial sector.
For mounting in control panels, the pressure gauges can be fitted with a mounting flange or with a triangular bezel and mounting bracket.
APLICATIONS
- Machine building and plant construction
- Building services
- Refrigeration technology
- For gaseous and liquid media that are not highly viscous or crystallising and will not attack copper alloy parts.
SPECIAL FEATURES
- Durable and roust
- Cost-effective and reliable
- To combine with WIKA diaphragm seals
- Germanischer LIoyd approval
- Scale ranges up to 0…1,000 bar
SPECIFICATION
Design
EN 837-1
Nominal size in mm
100, 160
Accuracy class
1.0
Scale ranges
0 … 0.6 to 0 … 1,000 bar
or all other equivalent vacuum or combined pressure and vacuum ranges
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
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 per IEC/EN 60529
IP54
Process connection
Copper alloy
Lower back mount
G ½ B (male), SW 22
Pressure element
< 100 bar: Copper alloy, C-type
≥ 100 bar: Stainless steel 316L, helical type
