Accuracy of a measurement instrument defines how much a measurement value may deviate from the perfect measured value.
Accuracy is very closely connected with precision, but unlike precision it is constrained by a series of fixed reference points or absolute values that all readings are compared with to define the exactness of the instrument measurement. Typically these comparison absolute values are read from a more accurate instrument ideally with a 10 to 1 ratio difference in accuracy to ensure it does not contribute significantly to the overall error calculation. However in practise it is not always possible to achieve such a high ratio difference in accuracy. When this is the case the overall accuracy should also include the reference instrument uncertainty which better reflects the true accuracy of the device.
- 1,500 psig 4-20mA out mineral hydraulic oil pressure sensor for material testing machines
- 100mb leak testing dp transmitter with 1mb accuracy & 10bar overpressure rating
- Hydro power plant sea water high accuracy DP transmitter
- 36XW Digital Submersible Hydrostatic Level Sensor
Request info on high accuracy measurement products for your application.
Accuracy Related Terms
More pages related to accuracy technical terms.