A Phoenix meter is calibrated when it shows more than how much deviation from the standard?

A Phoenix meter is calibrated when it shows a deviation of more than 0.1 +/- from the standard. This level of deviation indicates that the meter is not measuring accurately within acceptable limits and requires recalibration to ensure precision in readings. Calibration is crucial for maintaining the reliability of measurements, especially in water treatment applications where even minor inaccuracies can lead to significant consequences. A deviation greater than 0.1 +/- signals that the meter's performance may be compromised, necessitating corrective action to ensure that it operates effectively and adheres to established standards. Having a clear threshold like this is essential in quality control processes in numerous industries, including water systems, to uphold standards of accuracy and reliability.