Enter the reported pressure by the sensor and the true pressure into the calculator to determine the pressure sensor accuracy.

Pressure Sensor Accuracy Formula

The following equation is used to calculate the Pressure Sensor Accuracy.

PSA = | MP-TP | / TP * 100
  • Where PSA is the pressure sensor accuracy (%)
  • MP is the measured pressure
  • TP is the true pressure

To calculate the pressor sensor accuracy, divide the difference between the measured and true pressure by the true pressure, then multiply by 100.

What is Pressure Sensor Accuracy?

Definition:

Pressure sensory accuracy is a measure of the average variance a pressure sensor reads relative to the true pressure. This accuracy is often expressed as a percentage of the true pressure value.

How to Calculate Pressure Sensor Accuracy?

Example Problem:

The following example outlines the steps and information needed to calculate Pressure Sensor Accuracy.

First, determine the measured pressure by the sensor. For this example, the measured pressure is found to be 50 pascals.

Next, determine the true pressure. The true pressure in this scenario is given is 52 pascals.

Finally, calculate the pressure sensor accuracy using the formula above:

PSA = | MP-TP | / TP * 100

PSA = |50-52 | / 52 * 100

PSA = 3.846%

FAQ

What factors can affect the accuracy of a pressure sensor?

Several factors can influence the accuracy of a pressure sensor, including temperature fluctuations, humidity, mechanical vibrations, electrical noise, and the quality of the sensor’s materials and manufacturing process. Calibration and maintenance routines also play a critical role in maintaining sensor accuracy over time.

How often should a pressure sensor be calibrated?

The calibration frequency for a pressure sensor depends on its usage, the environment in which it operates, and the accuracy requirements of the application. Generally, it is recommended to calibrate sensors annually, but for critical applications or harsh environments, more frequent calibration may be necessary.

Can pressure sensor accuracy be improved after manufacturing?

While the inherent accuracy of a pressure sensor is determined by its design and manufacturing quality, accuracy improvements can be achieved through calibration. Calibration adjusts the sensor output to compensate for errors, thereby improving its accuracy when measuring pressure. Software algorithms can also be used to correct known errors in sensor readings.