Yokogawa unveils enhanced calibration services for power measurements

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By eeNews Europe

The new services being offered by Yokogawa include calibration at frequencies up to 100 kHz – the only industrial (i.e. non-government or national) organisation to offer such a service; calibration of external current transducers at currents of up to 1200 A with precise phase calibration to cater for the measurement of power as well as current; and the capability to carry out calibration at low power factors down to 0.001.

The European Standards Laboratory has also developed a high-accuracy power measurement system based on two sampling voltmeters and synchronization devices using two stage inductive voltage dividers and electronic current compensated transformers with an AC shunt resistor. The measurement uncertainty of this low-frequency sampling wattmeter is less than 40 parts in 10^6 for active, reactive and apparent power for frequencies between 45 and 60 Hz.

More information about Yokogawa’s calibration service at


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