Mechanical Test Gauge WIKA

Mechanical Test Gauge WIKA

The model 312.20 Mechanical Test Gauge WIKA has been specifically designed for the measurement of pressures with high accuracy.

With its accuracy class of 0.6, the Bourdon tube pressure gauge is suitable for testing industrial type pressure gauges or for precision measurement in laboratories.

For the respective measuring requirement, a scale range between 0 … 0.6 and 0 … 600 bar can be selected. The model 312.20 is constructed with a case from stainless steel and wetted parts from copper alloy.

The instrument meets the requirements of the international industry standard EN 837-1 for Bourdon tube pressure gauges. The optimal readability of the instrument, with a nominal size of 160 mm, is achieved via a knife-edge pointer and a dial with fine divisions.

Supported through the optional mirror band scale, the parallax error can be eliminated. For this instrument, an optional DKD/DAkkS calibration certificate can be generated. Safe storage and transport are ensured by a transport case (accessory).

Applications

• For gaseous and liquid media that are not highly viscous or crystallizing and will not attack copper alloy parts
• Precision measurement in laboratories
• High-accuracy pressure measurement
• Testing of industrial-type pressure gauges

Technical Specification

Design

• EN 837-1

Nominal size in mm

• 160

Accuracy class

• 0.6

Scale ranges

• 0 … 0.6 bar [0 … 8.7 psi] to 0 … 600 bar [0 … 8,702.3 psi]

or all other equivalent vacuum or combined pressure and vacuum ranges

Connection location

• Lower mount (radial)
• Lower back mount

Process connection

• G ½ B

Ambient temperature

• -20 … +60 °C [-4 … +140 °F]

Medium temperature

• +80 °C [+176 °F]

Process connection

• Copper alloy

Pressure element

• < 100 bar: Copper alloy, C-type
• ≥ 100 bar: Stainless steel 316L, helical type

Case, bayonet ring

• Stainless steel

Ingress protection per IEC/EN 60529

• IP54

Test Gauge

The standard test gauge is an accurate gauge used for the calibration of pressure instrumentation. The accuracy of the test gauge means that the error in reading is guaranteed not to exceed 0.25% at any point of the scale on either rising or falling pressure.

Data Sheet