For example: Agilent E4440A or Anritsu 68369
540B Thermal Transfer Standard

Model:540B

Manufactured by: Fluke

Category:Calibration Fixtures

Fluke 540B - Calibration Fixtures

Fluke 540B Overview

The Fluke 540B is a used Thermal Transfer Standard.
  Voltage transfers may be made from 0.25 to 1000V rms in 14 ranges with a frequency range from 5Hz to 1MHz and a basic accuracy of ±0.01%.

Other Info:
The Fluke 540B, Thermal Transfer Standard, that is a thermal instrument for precise measurement and calibration of AC voltage and current. The Fluke 540B, Thermal Transfer Standard, is designed for simple operation with positive protectection from overloads.

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