Calibration Services
Standards Recertification

Upgrade and Repair of Radian Standards
Radian standards have been the reference standards in North America for the past 15 years. There is no better alternative for services on your Radian standards than going directly to the source. No other laboratory in the world knows more about your Radian standard and can assure that its performance is optimized. Radian will not settle for anything less. Radian standards are tested at voltage, current and phase angle combinations across their entire operating range. Calibration adjustments are made to optimize measurement accuracy at every operating condition.

Non-Radian Energy Standards
Recertification services are available for any AC energy reference standard. These recertification services do not encompass any adjustments of calibration or repairs. Recertify at cardinal test points only or across the entire operating range of the standard. Custom test point options allow you to select exactly what points you want certified. Temperature testing is also offered for an additional charge. Certifiable functions include Wh, VARh, VAh, mAh, mVh, amps squared hours and volts squared hours.

Other AC Measurement Instruments
Radian can test and certify other AC measurement instruments. These instruments are tested using a state of the art AC metrology system with worst case measurement accuracy of +/-0.01% on all of the following instruments:

AC Voltmeters 60 VAC to 600 VAC (lower AC voltages available at slightly lower accuracy)
AC Ammeters 0.2 amps to 67 amps (lower AC currents available at slightly lower accuracy)
AC Wattmeters At any combination of above voltage and current points
Phase Angle Meters Any phase angle from 0 to 360 degrees, or -180 to +180 degrees

Remote Accuracy Certification
Radian now offers the same benefits of a NIST traceable accuracy certification to those customers unable to send their standard in. Remote Accuracy Certifications entail sending a certified Radian transfer standard to the customer for a designated period of time. This transfer standard comes with a complete NIST traceable certificate of calibration at test points across its entire operating range. This standard is then used to certify "other" reference standard(s). This service is ideally suited to those customers having test boards with reference standards that are either integrated or not easily removed. Most modern test boards have software built in to facilitate testing against an external reference. Multifunction standards are available so that the voltage, current, frequency and phase angle outputs of the test board can also be tested and certified. As an option, an as left test sheet on the transfer reference standard can be run and sent to the customer upon its return to Radian. By comparing the original test results with the as-left data, the user can be assured that the transfer standard's accuracy did not shift as a result of shipment. For older test boards, additional accessories are available to help facilitate the testing manually.