North Atlantic Model 225 Digital Phase Angle Voltmeter, P/N 401085, 400 Hz

North Atlantic 225 Phase Angle Voltmeter

This PAV provides complete analysis of complex AC waveforms at a discrete frequency or frequencies, and displays the results on a high readability 4 1/2 digit display.  Parameters measured are Total, Fundamental, In-Phase, and Quadrature voltages plus Phase Angle.  Phase angle is displayed directly in degrees from 0° to 360° with a resolution of 0.1°.

SPECIFICATIONS:

• Phase Sensitive Operating Frequencies: 400 Hz & 54 kHz
• Signal Voltage Range: 10 mV to 1000 V RMS in 6 ranges, 500 V RMS max input
• Display Voltage: 4 1/2 digits, 0.01% full range resolution
• Display Phase: 0.0° to 360.0° range, 4 digits (0.1° resolution)

There is no option label on the back, but using the option information I was able to find, it appears that our 225 has the following options:

01 - Angle Mode & 45° Phase Adjust
02 - Autoranging
05 - Broadband Isolation (Signal)
08 - Rear Input (Signal & Reference) Terminal Strips
10 - Null Meter
 

 I used the front photo of another unit we had, but this one looks basically the same.

Additional specifications available upon request.