What is the accuracy percentage for a gauge reading of 50 psi with ±0.6 psi accuracy?

What is the accuracy percentage for a gauge reading of 50 psi with ±0.6 psi accuracy?

• A. 0.6%
• B. 1.0%
• C. 1.2%
• D. 1.5%

Answer: (C)

To determine the accuracy percentage for a gauge reading of 50 psi with an accuracy specification of ±0.6 psi, you start by calculating the accuracy as a fraction of the full scale. The accuracy range indicates how much deviation from the true value can be expected in the reading. First, you calculate the accuracy percentage using the formula: \[ \text{Accuracy Percentage} = \left( \frac{\text{Accuracy}}{\text{Gauge Reading}} \right) \times 100 \] In this case, the accuracy is ±0.6 psi and the gauge reading is 50 psi. Plugging the values into the formula gives: \[ \text{Accuracy Percentage} = \left( \frac{0.6}{50} \right) \times 100 = 1.2\% \] So, the accuracy percentage is 1.2%. This means that the gauge reading could realistically vary by ±0.6 psi, which corresponds to a 1.2% deviation from the indicated pressure of 50 psi. This figure is significant in process control, as it provides insight into the reliability of measurements crucial for safe and efficient operation.

To determine the accuracy percentage for a gauge reading of 50 psi with an accuracy specification of ±0.6 psi, you start by calculating the accuracy as a fraction of the full scale. The accuracy range indicates how much deviation from the true value can be expected in the reading.

First, you calculate the accuracy percentage using the formula:

[

\text{Accuracy Percentage} = \left( \frac{\text{Accuracy}}{\text{Gauge Reading}} \right) \times 100

]

In this case, the accuracy is ±0.6 psi and the gauge reading is 50 psi. Plugging the values into the formula gives:

[

\text{Accuracy Percentage} = \left( \frac{0.6}{50} \right) \times 100 = 1.2%

]

So, the accuracy percentage is 1.2%. This means that the gauge reading could realistically vary by ±0.6 psi, which corresponds to a 1.2% deviation from the indicated pressure of 50 psi. This figure is significant in process control, as it provides insight into the reliability of measurements crucial for safe and efficient operation.