WIKA Differential Pressure Gauge (732.18, 733.18)

For refrigeration technology, stainless steel, NS 80 and 100

Applications

  • Measurement of differential pressure or of two different pressures applied in refrigeration plants or compressors
  • Simultaneous measurement of the vapour pressure and the resulting vapour temperature
  • For gaseous and liquid aggressive media that are not highly viscous or crystallising, also in aggressive ambience

Special Features

  • Differetial pressure with moving dial
  • Design optionally with duplex scale
  • With liquid-filled case for damping in applications with high dynamic pressure pulsations or vibrations and for avoiding condensation water Model 733.18
  • Combined pressure and temperature scales as duplex, triples or quadruplex scales for all common refrigerants

Sales Contact (Wika.sales@asyatrafo.com)

Description

 

 

Design

Two independent measuring systems, parallel entries in line

Nominal size in mm

80, 100

Accuracy class

1.6

Scale ranges

0 … 2.5 to 0 … 60 bar -1 … 0 … +25 bar
-1 … 0 … +12 bar -1 … 0 … +30 bar
-1 … 0 … +15 bar -1 … 0 … +35 bar
-1 … 0 … +16 bar -1 … 0 … +40 bar
Other scale ranges on request

In order to ensure a good readability, the differential pressure should be no less than 1/6 of the full scale value.

 

When ordering state both pressures:

a) maximum total pressure applied, b) differential pressure

Pressure limitation

Steady: Full scale value
Fluctuating: 0.9 x full scale value
Short time: 1.3 x full scale value

Permissible temperature

Ambient: 0 … +60 °C
Medium: +100 °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