The CPS-20M-HC20 Contamination Prevention System protects the Fluke Calibration 6270A Modular Pressure Controller/Calibrator against contamination. It includes an HC20 test port as well as a set of adapters for tool-free, hand-tight connection to common pressure fittings.
The HC20 test port has an M20 X 1.5 female thread and an O-ring inside. This makes it easy to connect devices under test (DUTs) which have M20 X 1.5 male threads. The M20 test ports have varied adapters, which are used to connect different DUTs with other male threads, such as NPT or BSP M14 X 1.5. These adapters seal on an O-ring and thus do not require PTFE tape.