Instrument instruction manual, repeatability: ±0.2%F.S. What does it mean?

repeatability of ±0.2% F.S——In the technical specification of the instrument, "Repeatability: ±0.2% F.S" and "Accuracy: ±1.0% F.S" are two terms that describe the performance indicators of the instrument.

1，repeatability of ±0.2% F.S:

±0.2% F.S "Repeatability" refers to the consistency between measurement results when the instrument measures the same object multiple times under the same measurement conditions. “±0.2%F.S” here means that the maximum deviation between the measurement results of the instrument will not exceed 0.2% of the full scale (F.S, the abbreviation of Full Scale). Full scale refers to the maximum value that the instrument can measure.

For example, if a pressure gauge has a full scale range of 1,000 Pascals, its repeatability error will be within ±2 Pascals.

2，Accuracy:

±1.0% F.S "Accuracy" refers to the closeness between the measured value of the instrument and the true value. Here, "±1.0%F.S" means that the error between the measured value and the true value will not exceed 1% of the full scale. If the instrument's full scale range is 1000 Pascals, then the accuracy error range is ±10 Pascals.

3，Full scale, 0.1% refers to error within the full range of measurement

This %FS means the percentage of accuracy and full scale. For example, for a pressure sensor with a range of 400Bar, if the accuracy of the sensor is 0.5%FS, then the error between the measured value of the sensor and the true value should be 2Bar. Within such a range,

Both indicators are important parameters for evaluating the performance of measuring instruments. Usually, users will choose the appropriate instrument based on the required measurement accuracy and repeatability.

In short, when evaluating sensor performance, repeatability is an important indicator that can help users judge the stability and reliability of the sensor in practical applications.