For many years we have been supplying Danfoss in Slovakia (formerly Secop) with our AQUATRACE® analyzers analyzers for determining the residual moisture in refrigeration compressors.
Left picture: Variant with AQUATRACE® IV (from 2015); Right picture: Variant with AQUATRACE® III (from 2010)
The refrigerant compressors must be dried before they are filled with refrigerant. Then the so-called "pancake" is filled with refrigerant under slight negative pressure.