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TSL – Terminal Straight Line

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.

High accuracy measurement products
  • 10 bar calibration reference pressure sensor
  • LEX1 (Ei) High Accuracy Digital Pressure Gauge
  • -2 to 2 inHg g 4-20mA out intake and exhaust air pressure sensor for building management use
  • Digital pressure gauge for calibrating steam gauges from vulcanisation presses

Calibration Related Terms

More pages related to calibration 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
  • UKAS – The United Kingdom Accreditation Service
  • UKAS Calibration Certificate
  • Zero Offset
  • Zero Tare

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