Square Root Extraction is a mathematical process which is applied to a linear measurement scale to convert it to a non-linear square root scale.

The square root scale is generated by taking the square root of the ratio between measurement reading and full span.

Over a fixed measurement range with a square root extraction applied, the square root measurement will rise faster than the linear measurement at first, and then steadily slow down as measurement readings approach 100% full scale.

For example the flow of a gas or liquid through a closed pipe is proportional to the square root of the differential pressure. Therefore you can use a differential pressure sensor to measure flow by applying a square root extraction to the linear output.

**Square root extraction measurement products**

- 250″wc Orifice plate flow measurement dp transmitter
- DP transmitter with for measuring 300inH2O gas flow across orifice plate
- Pitot tube air flow calculation 1000 hPa differential pressure transmitter
- XMD Process Plant DP Cell Differential Pressure Transmitter

Request info on square root extraction measurement products for your application.

## Related Tools

- Convert linear input to square root extraction output
- Convert square root extraction input to linear output

## Measurement Signal Related Terms

More pages related to measurement signal technical terms.

- 2 Wire
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- 4 Wire
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- BFSG – Bonded Foil Strain Gauge
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- Digital Interface
- FSO – Full Scale Output
- HARTÂ®
- High Frequency Response
- Intrinsic Safety
- Measurement Signal
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- NO – Normally Open
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- Rangeable
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- Span Offset
- Span Sensitivity
- Threshold
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- Transducer
- Transmitter
- TSL – Terminal Straight Line
- TSS – Thermal Span or Sensitivity Shift
- Turndown Ratio
- USB
- Vented Cable
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- Wheatstone Bridge Strain Gauge
- Zero Offset
- Zero Tare