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Precision DC calibrator offers ease of testing at high currents and voltages

The Yokogawa 2560A precision DC calibrator has been designed to offer users a simple, stand-alone solution for the testing and calibrating of DC measuring instruments such as analogue meters, clamp meters, thermometers, temperature transmitters and data loggers.

The 2560A generates signals over a wide output range to enable the testing of products over their full operating ranges - it can generate DC voltages up to 1224 V and DC currents up to 36.72 A – and by connecting two instruments in parallel, a maximum current of 73.44 A can be generated.

Designed to provide intuitive operation the device comes with rotary dials and switches for each digit and function, along with traditional 7-segment LEDs to provide clear visibility. In addition, a range of computer interfaces enable the 2560A to be integrated into an automatic test system.

The output can be swept within the source range with sweep times of 8, 16, 32 or 64 seconds and linearity tests have been simplified by dividing the output into steps, with a setting of four, for example, generating steps of 25, 50, 75 and 100% of the set output value.

According to Yokogawa when the deviation dials are adjusted to check the full-scale value on the meter, the deviation from the main output setting is displayed as a percentage of full scale. The output value calculated from the main, divider and deviation settings is displayed, so that the user can directly read the output value. The EMF equivalent to the thermocouple temperature and resistance equivalent to RTD temperature can also be displayed.

The 2560A DC calibrator is one of a family of AC and DC calibrators which also includes the 2553A Small and light Precision DC Calibrator and the 2558A AC voltage/current standard.

Author
Neil Tyler

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