Standard equipment for checking field intensity meters having ferrite antennas

Conclusion The developed equipment permits reproduction of a uniform magnetic field in the frequency range of 10 kHz to 30 MHz with an error of 4.2–5.3%. It can be used as a standard measure during the checking of FIM the error of which is not less than 15%. The volume of the antenna in this case should not exceed the volume of an imaginary cylinder having these dimensions: a radius not greater than 0.05 R and a length of no more than 0.75 R. For antenna dimensions exceeding these the antennas should be checked in Helmholtz rings having some-what larger dimensions. It is necessary to certify such rings by experimental means.Translated from Izmeritel'naya Tekhnika, No. 9, pp. 74–76, September, 1973.     

Additions to the rules for checking meters of thermal energy and hot water

The necessary additions to the rules for checking instruments for measuring thermal energy and hot water are considered. The impossibility in principle of interchanging them, based on the results of checking, is emphasized. The requirements imposed on thermal power meters and their units when delivered for checking and on the accompanying documentation are formulated. The rules for checking and selecting matched pairs of thermal converters of resistance and the rules for adjusting and selecting matched pairs of electromagnetic flow meters are presented. Translated from Izmeritel'naya Tekhnika, No. 8, pp. 45–48, August, 1999.