INTERCOMPARISON MEASUREMENTS OF THERMAL AC-DC TRANSFER STANDARDS
The intercomparison on the calibration of ac-dc transfer standards of voltage and current involved seven laboratories of seven Member States of the European Community. It consisted in the calibration of transfer devices composed of thermal elements of 5 mA, 10 mA and 30 mA and resistors for 10 V, 30 V, 100 V, 300 V and 1000 V. Measurements were done at various frequencies up to 1 MHz. The participants agreed to within 10 ppm for 10 V at low frequency; the differences increased at high voltages and higher frequencies. Differences up to 90 ppm were observed at 100 kHz.
Bibliographic Reference: EUR 11567 EN (1988) MF, 70 PP., ECU 4, BLOW-UP COPY, ECU 8.75, AVAILABILITY: EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989126111800 / Last updated on: 1989-06-01
Available languages: en