The Yokogawa LS3300 is a dedicated, standalone and cost-effective calibrator, says the company, designed to reduce the cost and complexity of calibrating power meters and analysers with accuracies up to 0.15 per cent. Unlike existing multi-function calibrators, the LS3300 provides a lower cost and easy-to-use solution with specific features for calibrating power meters, adds Yokogawa.
Terry Marrinan, vice president, T&M Business Unit, Yokogawa T&M Europe and Asia Pacific says: “With the launch of the LS3300, we are bringing new dimensions of cost-effectiveness and simplicity to those who need to undertake their own calibration operations on multiple instruments with low to medium accuracies.”
The LR3300 combines a wide output (up to 1250V and 62.5A) with high accuracy (450ppm or 0.045 per cent) and high stability (100ppm or 0.01 per cent for one hour). For larger current outputs, up to 180A can be obtained by synchronising the outputs of multiple units.
For the calibration of three-phase power meters, it is possible to synchronise the outputs of two or three LS3300 instruments using master/slave connections. Other features of the LS3300 include the capability for direct calibration of the current sensor inputs of a clamp-on power meter using the instrument’s auxiliary output, and notification of when the output becomes stable to maximise the accuracy of the measurement.
The LS3300 is based on the core technology of Yokogawa’s AC calibrator, the 2558A, originally released in 2013. Calibrating power meters with the 2558A, however, required two separate 2558A instruments plus a reference power meter, whereas the LS3300 combines these functions in a single instrument to satisfy the calibration needs of lower-accuracy power meter users.
All power meters and analysers need calibrating to confirm performance and to satisfy the requirements of quality systems (such as ISO9001). As a dedicated instrument for calibrating lower-accuracy power meters at commercial mains frequencies and up to 1.2kHz, the LS3300 offers a cost-effective solution for users who need to calibrate higher volumes of power meters, says Yokogawa.
Customers likely to use the LR3300 include accredited calibration laboratories, private calibration companies, companies that manufacture measurement instruments such as power meters, clamp power meters and smart meters, and calibration divisions and repair service divisions of companies that use power measuring instruments in production line testing.
Where the highest accuracy is required, and also where the application consumes power at frequencies higher than 50/60Hz, an ISO 17025 accredited calibration at higher frequencies is required to prove the performance of the power analyser for the application, and to validate the instrument for compliance testing.
The Yokogawa European Standards laboratory in the Netherlands is the first non-governmental ISO 17025 accredited laboratory to offer power calibrations up to 100 kHz. An LS3300 can therefore be delivered with an accredited calibration enabling it to be quickly incorporated into a customer’s quality system.