Pressure Measurement Accuracy and Tolerance Calculator

Calculate Pressure Accuracy & Tolerance
Select Answer Mode
Pressure [?]

Accuracy [?]

Tolerance [?]

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Pressure sensor products

Contents

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User Guide

This tool will calculate the tolerance value, accuracy factor or pressure value for a pressure measurement device.

Use different pressure units to define the pressure measurement tolerance to avoid long decimals with too many leading zeros.

Define accuracy as a percentage value or a parts per million factor, plus a few other rarely used methods to express measurement accuracy.

Determine the largest pressure range that can be used to achieve a specific pressure measuring accuracy.

Formulas

The formulas used by this pressure measurement, accuracy and tolerance calculator to determine each individual parameter are:

Tol = P · Acc

Acc = Tol / P

P = Tol / Acc

Symbols

Tol = Tolerance value in pressure units
Acc = Accuracy as a proportion of a pressure value
P = Pressure value

Pressure

This is the pressure value used to derive the accuracy or tolerance. The pressure value used is often the pressure range of a pressure measurement device, since typically the accuracy is a fixed value across the whole range. For pressure calibration equipment the accuracy is sometimes defined as a percentage of reading, and in this case it would be a specific pressure reading that would be used to calculate the tolerance.

Accuracy

This is a proportion of the pressure range or reading that defines the margin of error in measuring the true pressure value.

Tolerance

This is the amount of pressure that a reading may deviate from the true pressure value.

Pressure gauge products