Terminal Straight Line (TSL) is a straight line drawn between the measurement output at zero and at full scale.
The TSL is used as a reference for stating the accuracy of a measurement device in a more practical way to help the user determine the reading accuracy. In most applications the device will be calibrated at zero and full scale.
Since the errors may be weighted to one side of the TSL, it is possible to improve on the accuracy by using the BSL as a reference, but calibration is not as straightforward as the TSL method.
Featured high accuracy measurement products
DMP331i High Accuracy Pressure Transmitter - High precision pressure transmitter with an accuracy of 0.1%FS BSL NLHR and digitally adjustable pressure ranges from 400mb up to 40 bar gauge & absolute.
Pressure Calibrator for Pressure Transmitter Calibration – ADT672 - The ADT672 series of pressure calibrators are precision digital pressure gauges with electrical measurement for pressure transmitter calibration
Glossary of Calibration technical terms
- BSL – Best Straight Line
- Compensated Temperature Range
- Dead Weight Tester
- NPL – National Physical Laboratory
- PPM – Parts Per Million
- Primary Pressure Reference Standard
- Secondary Pressure Standard
- Span Offset
- Traceable Calibration
- UKAS – The United Kingdom Accreditation Service
- UKAS Calibration Certificate
- Zero Offset
- Zero Tare
Help from Calibration resources
- Determining calibration error of Bourdon tube pressure gauge
- What is the difference between zero offset and zero drift?
