Oxygen tester (max. 700 bar)
Oxygen devices have to be absolutely free from oil and grease. Also many other devices have to be kept clean.
They have to be tested on air, water or other suitable liquids.
This oxytester (oil-water separator) guarantees an absolute separation between reference liquid of the calibration equipment and the device under test liquid.
The separator is sometimes used to prevent a tester from being contaminated by solids or liquids from gauges being calibrated.