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.
10 kPa orifice plate differential pressure transmitter for water flow measurement
XMD Process Plant DP Cell Differential Pressure Transmitter
ISOCON Universal Analogue Measurement and Control Signal Input to Output Converter- DP transmitter with for measuring 300inH2O gas flow across orifice plate
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
- 3 Wire
- 4 to 20 mA Current Loop Output Signal
- 4 Wire
- Amplified Voltage Output
- BFSG – Bonded Foil Strain Gauge
- Deadband
- Digital Interface
- FSO – Full Scale Output
- HART®
- High Frequency Response
- Intrinsic Safety
- Measurement Signal
- Millivolt Output Pressure Transducers
- mV/V – Millivolts per Volt Output Signal
- NC – Normally Closed
- NO – Normally Open
- Piezoresistive Strain Gauges
- Pressure Transmitters
- Rangeable
- Ratiometric
- Span
- Span Offset
- Span Sensitivity
- Threshold
- Totalizer
- Transducer
- Transmitter
- TSL – Terminal Straight Line
- TSS – Thermal Span or Sensitivity Shift
- Turndown Ratio
- USB
- Vented Cable
- Voltage Output Pressure Transducers
- Wheatstone Bridge Strain Gauge
- Zero Offset
- Zero Tare