The Clarke-Hess 2600 is a versatile Phase Angle Voltmeter (PAV) designed for precise measurements in electrical engineering applications, including Synchro/Resolver and LVDT/RVDT testing. It offers advanced DSP technology for enhanced performance and user-friendliness, replacing the previous Model 2500A. The instrument’s design prioritizes ease of use with “at the touch of a button” classic measurements, functioning more as a dedicated instrument than a complex computer. This makes it suitable for laboratories, industrial environments, and research facilities where reliable and accurate electrical measurements are critical.
## Technical Specifications
### Channels
* **Primary Channels:** 2, galvanically isolated, AC coupled.
* **Optional Channel:** Additional channel for In-Phase LVDT measurements.
### Measurement Capabilities
* **Core Measurements:** Total, Fundamental, In-phase, Quadrature, Ratio, Frequency, and Phase Angle.
* **LVDT/RVDT Functions:** Pre-defined functions including (A-B)/(A+B) and (A-B)/Ref.
* **Third Channel Measurements (Optional):** (A-B)/(A+B), In-phase, Quadrature, and Phase Angle measurements relative to the oscillator input.
* **Extended Measurements (with external shunt):** Power, Power Factor, Total Harmonic Distortion (THD), harmonics, and impedance.
### Frequency Range
* **Measurement Frequency:** 20 Hz to 100 kHz.
### Voltage Measurement
* **Input Voltage Ranges:** 20 mVrms to 630 Vrms, available in ½ decade ranges or auto-ranging.
* **Maximum Input:** 650 Vrms.
* **Voltage Resolution:** 4½ digits.
* **Voltage Accuracy:** Varies by frequency range, for example:
* 20 mV range, 20 Hz to 2 kHz: 0.04% of reading + 0.04% of range.
* 200 mV to 63 V range, 2kHz to 5kHz: 0.05% of reading + 0.05% of range.
* 630 V range, 20 Hz to 2 kHz: 0.05% of reading + 0.05% of range.
### Phase Measurement
* **Phase Input Ranges:** 0.00° to 360° or ±180°.
* **Phase Resolution:** 0.001°. (Note: One source lists 6 digits, another lists 0.1 degree)
* **Phase Accuracy:**
* 20 Hz to 1 kHz: ±0.010°.
* 1 kHz to 5 kHz: ±0.015°.
* 5 kHz to 10 kHz: ±0.020°.
* 10 kHz to 20 kHz: ±0.025°.
* 20 kHz to 50 kHz: ±0.040°.
* 50 kHz to 100 kHz: ±0.080°.
* *Note:* An additional 0.030° may be added if either input is on the 20 mV range.
### Signal Generator (Optional)
* **Output Voltage:** 1 Vrms to 120 Vrms, with ±2.0% accuracy (no load, no leveling).
* **Output Voltage Resolution:** 5 digits.
* **Output Frequency:** 360 Hz to 20 kHz, with ±0.01% accuracy.
* **Output Current:** Ranges from 1V to 32.00V.
* **Reference Generator Power:** Sufficient to drive most LVDT/Synchro references.
### Display
* **Type:** Large, high-resolution color TFT graphical display.
* **Content:** Simultaneously displays multiple parameters and the null meter.
* **Additional Feature:** Built-in oscilloscope for viewing input waveforms.
### Interfaces
* **Standard:** IEEE-488.2, USB.
* **Optional:** LAN.
### Electrical Characteristics
* **Input Impedance:** 1 MΩ || 52 pF (excluding leads). (One source indicates 1 MΩ || 20 pF)
* **Common Mode Rejection Ratio (CMRR):**
* 20 Hz to 1 kHz: -131 dB.
* 1 kHz to 5 kHz: -117 dB.
* 5 kHz to 20 kHz: -105 dB.
* 20 kHz to 50 kHz: -97 dB.
* 50 kHz to 100 kHz: -91 dB.
* **Harmonic Rejection:** -105 dB (even and odd harmonics).
* **Nulling Sensitivity:** 1 µV.
* **DC Recorder Output:** -1.8V to 3.6V (Phase), ±2V full scale (All others).
* **DC Output Accuracy:** ±10 mV.
### Physical
* **Dimensions (Approximate):** 17.3″ W x 3.5″ H x 13” D. (One source lists 3-1/2” H X 19” W X 13” D, and another 8.5″ x 6″ x 2.5″ – note that the latter may refer to older models or different configurations.)
* **Weight (Approximate):** 13 pounds.
* **Operating Temperature Range:** 0°C to 40°C.
* **Within Specification Temperature:** 23°C ± 5°C.
### Power Supply
* **Input Voltage:** 100V to 260 Vrms, 47Hz to 63Hz.
* **Power Consumption (Max):** 30 VA.
Why Choose Aumictech for Clarke-Hess 2600?
At Aumictech, we specialize in supplying high-end Phase Angle Voltmeter equipment. Whether you need precise Synchro/Resolver and LVDT/RVDT measurements, comprehensive electrical parameter analysis, or robust instrument integration with IEEE-488 and USB interfaces, our team ensures the Clarke-Hess 2600 delivers maximum performance for your application.
