Models 422.12, 423.12

Diaphragm pressure gauge

Industrial series, grey cast iron

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Applications

  • For measuring points with increased overpressure
  • With liquid-filled case for applications with high dynamic pressure pulsations or vibrations (Model 423.12)
  • For gaseous and liquid media, with the open connecting flange option also for particulates-containing and viscous media
  • For mining, environmental technology, machine building and plant construction

Special Features

  • Compatible with switch contacts
  • Process connection thread or open flange
  • Scale ranges from 0 … 16 mbar

Description

Design
EN 837-3

Nominal size in mm
100, 160

Accuracy class
Model 422.12: 1.6                                                        Model 423.12: 2.5 (option 1.6)

Scale ranges
0 ... 16 mbar to 0 ... 250 mbar (flange Ø 160 mm)
0 ... 400 mbar to 0 ... 40 bar (flange Ø 100 mm)
or all other equivalent vacuum or combined pressure and vacuum ranges

Pressure limitation
Steady: full scale value
Fluctuating: 0.9 x full scale value

Overpressure safety
3 x full scale value, however max. 40 bar

Permissible temperature
Ambient: -20 ... +60 °C
Medium: +100 °C maximum
Storage: -40 ... +70 °C (scale ranges ≤ 60 mbar: -20 ... +70 °C)

Temperature effect
When the temperature of the measuring system deviates from the reference temperature (+20 °C):
max. ±0.8 %/10 K of full scale value

Ingress protection
IP 54 per EN 60529 / IEC 529
(with liquid filling (Model 423.12) IP 65)

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