Type 422I.S. - Intrinsically Safe Fail Freeze I/P Converter

The Type 422I.S. Intrinsically Safe Fail Freeze I/P Converter is suitable for use in many hazardous area applications, including natural gas distribution. The advanced electronic controls ensure that in the event of power failure, the last known output pressure is maintained, an essential function in many natural gas applications. In addition, the Type 422I.S. is suitable for use on Intrinsically Safe circuits, thanks to it's low power consumption. The Type 422I.S. offers a proportional output pressure of 0.2...1 Bar (3...15psi) based on a 4...20mA input.
  • I/P Converter
  • Suitable for use in Intrinsically Safe environments
  • Fail Freeze function
  • 4…20mA Input
  • 0.2…1 Bar (3…15psi) Output range
  • Port Size: 1/4″ NPT
  • Captured bleed as standard
  • Minimum vibration effects
Technical data


Body Material


Operating Pressure

0.2. . .1 Bar, 3. . .15 psi

Operating Temperature

-10. . .70°C


Fail Freeze

Protection Class

Intrinsically Safe – ATEX Ex ia IIC T4 Ga

Seal Material



1/4" NPT, G1/4

Download data sheet

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