THIS PRODUCT IS NO LONGER AVAILABLE, PLEASE SEE MODEL 2250A at the following link:
NAIs 2251 Phase Angle Voltmeter is one of the most versatile AC Measurement Instruments available. It employs a microprocessor-based design utilizing Fast-Fourier Transform techniques that combine many of the capabilities of today's network/waveform analyzers in a Digital Analyzing Voltmeter configuration. Similar to the 2250, the 2251 incorporates the most commonly used functions, providing a more cost-effective measurement instrument with fewer features and reduced accuracy requirements.
The 2251 is exceptionally “user friendly.” Simply pressing individual switches on the front panel enables the 2251 to make highly accurate ratio measurements in both phase-sensitive and voltage modes; measure percent, total harmonic distortion, and the magnitude and phase of selected harmonic; and compute the percent deviation of a signal from a selected nominal. Isolated inputs allow null, ratio, and gain measurements of key parameters. Specifically designed for the Synchro/Resolver and LVDT/RVDT marketplace, the 2251 is ideally suited for defense, industrial, and commercial applications.