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Span Offset

Span Offset is the amount of deviation in output or reading from the exact value at a point within the measurement span.

The span offset can be expressed in measurement units, percentage of span or percentage of full scale.

Manufacturers may include a factory setting tolerance for the span offset on the product technical data sheet to help users determine the total error to be expected without any calibration adjustment.

For example a pressure transducer for measuring 0 to 15 psi pressure with a 0 to 30 mV output may have a span offset tolerance of +/-0.1% span.  Therefore at 7.5 psi the maximum span setting tolerance will be +/- 0.015 mV.

Span output adjustable measurement products
  • XMPi Process Plant Gauge and Absolute Pressure Transmitter
  • DMP331i High Accuracy Pressure Transmitter
  • TPHADA Ultra High Range Pressure Sensor TPHADA Ultra High Range Pressure Sensor
  • 41X High Precision Low Range Pressure Transmitter

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
  • Traceable Calibration
  • TSL – Terminal Straight Line
  • UKAS – The United Kingdom Accreditation Service
  • UKAS Calibration Certificate
  • Zero Offset
  • Zero Tare

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