Parts Per Million (PPM) is a ratio used to describe the maximum measurement error or resolution of pressure measurement equipment.
PPM is most often used as an alternative way of expressing very small percentage values for high accuracy measurement standards such as dead weight testers and high resolution digital displays.
Related Technical Terms
- BSL – Best Straight Line
- Compensated Temperature Range
- Dead Weight Tester
- NPL – National Physical Laboratory
- Primary Pressure Reference Standard
- Secondary Pressure Standard
- Span Offset
- Traceable Calibration
- TSL – Terminal Straight Line
- UKAS – The United Kingdom Accreditation Service
- UKAS Calibration Certificate
- Zero Offset
- Zero Tare
