Contamination can occur during pressure calibration when unwanted substances such as water, oil or grit enter the calibration system. These contaminants can damage equipment and distort calibration results. Fluke explains that its Contamination Prevention System (CPS) protects pressure calibrators like the 2271A Industrial Pressure Calibrator, the 6270A Modular Pressure Controller/Calibrator and the 8270A/8370A High Pressure Controller/Calibrator from contamination【980241676124708†L563-L568】.

If your device under test operates with a different medium than your calibrator (for example, nitrogen gas vs. oil), mixing fluids can lead to contamination, potential damage and inaccurate calibrations. To prevent these problems, employ self‑purging liquid traps, separators, vacuum pumps with auto‑vent valves and filters to stop contaminants from transferring between systems【980241676124708†L575-L589】. Always ensure your lines are properly purged before connecting devices, and follow manufacturer guidelines for handling different media.

By proactively preventing contamination, you protect both your equipment and the accuracy of your pressure calibrations, ensuring reliable measurements for critical applications.