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
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