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Phase angle measurement with Laureate Phase Meters requires that two signals with identical periods be applied to Channels A and B. Phase angle measurement from -180° to +180° is obtained by timing the rising edge of one channel and the falling edge of the other channel, and programming a 180° offset. A resolution of 1°, 0.1° or 0.01° is selectable. Accuracy is 0.01% up to 100 Hz, 0.1% at 1 kHz, and 1% at 10 kHz.
| Phase angle indicates the lead or lag in degrees from 0° to 360° between two periodic signals having the same period. In the illustration to the right, phase angle is 360*P1/P. The signals are applied to the A and B input channels. |
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| Phase angle measurement is commonly used with AC power from 50 Hz to 400 Hz. Phase angle needs to be set to zero to synchronize AC generators. It also applies to the triggering of SCRs and Triacs for power control. The phase angle between AC current and voltage determines power factor. Laureate phase angle meters provide exceptionally fast response and high accuracy for low frequencies, such as AC line frequency. |
For specifications and additional operating modes of the Laurel digital meters and counters, please see:
Exceptional flexibility is achieved for Laureate phase angle meters by programmable features and up to 5 plug-in boards in addition to the main board. Please see our Laureate product line overview.
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