Clarke-Hess 6000A Phase Meter

The Clarke-Hess 6000A is an advanced phase angle meter designed for highly accurate phase and voltage measurements in electronics, power electronics, measurement and control engineering and industrial applications. With accuracy to ±0.020°, resolution of 0.001°, and a wide frequency range from 5 Hz to 1 MHz, the 6000A offers unprecedented performance for laboratories and production lines.

With 80 dB harmonic suppression, a high-resolution colour display, and extensive digital connectivity via IEEE-488, USB and optional LAN, the 6000A is a leading instrument in its class.

Phase and voltage accuracy

The Clarke-Hess 6000A uses an advanced Fourier Transform technique, effectively filtering out harmonics and noise. This ensures exceptional precision regardless of the waveform of the signal.

Phase accuracy is specified as follows:

• > 5 Hz – 2 kHz: ±0,020°
• > 2 kHz – 5 kHz: ±0,030°
• > 5 kHz – 10 kHz: ±0,040°
• > 10 kHz – 50 kHz: ±0,050°
• > 50 kHz – 1 MHz: f (in kHz) × 0,001°

The 6000A’s voltage tolerance is exceptionally wide: from 10 mV to 630 V RMS, making the instrument suitable for both low- and high-voltage measurements.

Advanced measurement functionality and ease of use

Two selectable ranges: 0° to 360° or ±180°

> Fully waveform-independent: unique DFT circuitry guarantees accurate phase angle measurements even with distorted or noisy signals.
> Automatic amplitude and phase range selection prevents erroneous measurements.
> Offset correction for differential phase angles without manual calculations.
> Galvanically isolated inputs prevent ground loops and increase measurement reliability.
> Robust input protection prevents damage in case of sudden high input voltages.

There is also an optional DC output (Model 6000A-01), which provides a voltage output directly proportional to the phase angle (1 V/°), ideal for analogue monitoring and data acquisition systems.

Applications Clarke-Hess 6000A Phase Meter

The Clarke-Hess 6000A is designed for:

> Calibration and testing of phase angle meters, vector voltmeters and power meters
> Precision phase and voltage measurements in R&D and quality control
> Frequency response analysis (FRA) and power quality testing
> Industrial and scientific applications in energy and network analysis

The Clarke-Hess 6000A Phase Meter offers an unparalleled combination of precision, noise reduction and advanced functionality.