Wika Differential pressure gauge with Bourdon tube parallel entry 732.18 733.18
Applications
■■ Measurement of differential pressures 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
■■ Differential pressure with moving dial
■■ Design optionally with duplex scale
■■ With liquid-filled case for damping in applications with
high dynamic pressure loads or vibrations and for avoiding
condensation water 1)
■■ Combined pressure and temperature scales, as duplex,
triplex or quadruple scales for all common refrigerants
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
English
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