Phase angle measurement
with the Laureate Phase Meter requires that two signals with identical periods be applied to Channels A and B.
Phase angle measurement
from -180º to +180º is obtained by timing the rising edge of one channel
and the falling edge of the other channel, and programming a 180º offset.
A resolution of 1º, 0.1º or
0.01º 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 0º
to 360º 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.
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. The Laureate phase
angle meter provides exceptionally fast response and high accuracy for low
frequencies, such as AC line frequency.
