What is meant by sensitivity accuracy precision?

TechTip: Accuracy, Precision, Resolution, and Sensitivity. Accuracy can be defined as the amount of uncertainty in a measurement with respect to an absolute standard. Accuracy specifications usually contain the effect of errors due to gain and offset parameters.

How resolution affects accuracy and precision?

Accuracy: The error between the real and measured value. Precision: The random spread of measured values around the average measured values. Resolution: The smallest to be distinguished magnitude from the measured value.

Does sensitivity affect accuracy?

Sensitivity describes the smallest absolute amount of change that can be detected by a measurement, often expressed in terms of millivolts, microhms, or tenths of a degree. Sensitivity should not be confused with accuracy—they are entirely different parameters. Sensitivity sometimes can be improved by averaging.

Is sensitivity same as resolution?

Resolution is the smallest unit of measurement that can be indicated by an instrument. Sensitivity is the smallest amount of difference in quantity that will change an instrument’s reading. A measuring tape for example will have a resolution, but not sensitivity.

What does accuracy, precision, resolution and sensitivity mean?

Instrument manufacturers usually supply specifications for their equipment that define its accuracy, precision, resolution and sensitivity. Unfortunately, not all of these specifications are uniform from one to another or expressed in the same terms.

How is accuracy a function of accuracy conditions?

Readings as a function of accuracy Conditions: input 0-10 V, Accuracy = ± (0.1% of input + 1 mV) Precision describes the reproducibility of the measurement. For example, measure a steady state signal many times. In this case if the values are close together then it has a high degree of precision or repeatability.

What do you need to know about accuracy specifications?

accuracy specification includes the non-linearity, and whether or not the accuracy is specified for the full measurement range. If it is not, this gives reason to doubt the measurement accuracy near the extremes. Hysteresis is the change in measurement sensitivity that depends on the direction of the change in the measured variable.

Which is the most sensitive range for resolution?

To further improve on the effective resolution, consider averaging the values as previously discussed. Sensitivity: The most sensitive measurement is made on the ±1 volt range where the noise is only 41.5uV rms whereas the sensitivity of the 5 volt range is 138.8uV rms.