Capacitive Pressure Sensor Measurement Uncertainty

Measurement uncertainty is the amount of uncertainty or error that is present in a measurement. The uncertainty is expressed as a percentage of the measurement value. In the case of a capacitive pressure sensor, the measurement uncertainty is given as a percentage of the full-scale range of the sensor.

Option A is the correct answer, which is ± 0.2%. This means that the measurement uncertainty of the capacitive pressure sensor is ± 0.2% of the full-scale range of the sensor.

Explanation:

Capacitive pressure sensors work by measuring the capacitance between two conductive surfaces. The capacitance changes as pressure is applied to the sensor, and this change in capacitance is used to determine the pressure.

The measurement uncertainty of a capacitive pressure sensor depends on several factors, including the sensitivity of the sensor, the accuracy of the measurement circuitry, and the stability of the sensor over time.

Option A, ± 0.2%, is a typical measurement uncertainty for a capacitive pressure sensor. This means that if the full-scale range of the sensor is, for example, 1000 psi, the measurement uncertainty would be ± 2 psi.

Conclusion:

In conclusion, the measurement uncertainty of a capacitive pressure sensor is expressed as a percentage of the full-scale range of the sensor. Option A, ± 0.2%, is a typical measurement uncertainty for a capacitive pressure sensor. It is important to consider the measurement uncertainty when using a capacitive pressure sensor for accurate pressure measurements.