ĐỒNG HỒ ĐO CHÊNH ÁP WIKA 732.18 733.18

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

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