Pressure Gauge WIKA Model 612.20


The model 612.20 capsule pressure gauge is based upon the proven capsule measuring system. The capsule measuring principle is particulary suitable for low pressure. On pressurisation, the expansionn of the capsule element, proportional to the incident pressure, is transmitted to the movement and indicated.

The case and the bayonet ring are made from stainless steel. The material of the process connection is a copper alloy.

The modular design enables a multitude of combinations of case materials, process connections, nominal size and scale ranges. Due to this high varience, the instrument is suitable for use in a wide range of applications within industry.

For mounting in control panels, the capsule pressure gauges can, depending on the process connection, be fitted with a surface mounting flange or with triangular bezel and mounting bracket.


  • Robust design and ingress protection IP54
  • For gaseous, dry and non-aggressive media
  • Medical, vacuum, environment and filter monitoring.


  • Zero point setting in front
  • Case from stainless steel
  • Special connection location on request
  • Low scale ranges from 0…6 mbar



EN 837-3

Nominal size in mm
63, 100, 160
Accuracy class

Scale ranges

NS 63: 0 … 25 mbar to 0 … 600 mbar

NS 100: 0 … 10 mbar to 0 … 600 mbar

NS 160: 0 … 6 mbar to 0 … 600 mbar
or all other equivalent vacuum or combined pressure and vacuum ranges

Pressure limitation

Steady: Full scale value

Fluctuating: 0.9 x full scale value

Permissible temperature

Ambient: -20 … +60 °C

Medium: ≤ 100 °C

+ 80 °C maximum (with NS 100 and 160 back mount)

Temperature effect

When the temperature of the measuring system deviates from the reference temperature

(+20 °C): max. ±0.6 %/10 K of full scale value

Ingress protection per IEC/EN 60529


Process connection

Copper alloy

Lower mount (radial) or lower back mount

NS 63: G ¼ B (male), SW 14

NS 100, 160: G ½ B (male), SW 22

Pressure element

Copper alloy

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