# The Meters (Certification) Regulations 1990, Paragraph 7: Multi-rate meters


Induction meters
(1) (a) All multi-rate induction meters shall be tested on one rate in accordance with paragraphs 5 and 6 and on each and every other rate at a low load using Method A, Method B or Method C tests and at a high load using Method A test.
(b) The difference in errors measued on one rate shall not differ from the errors measured on any other rate, for the same load conditions, by more than 1%.
Static meters
(2) (a) All multi-rate static meters shall be tested on one rate in accordance with paragraphs 5 and 6.
(b) For repaired multi-rate static meters where–
(i) the total units is the sum of all the rates, a further test shall be carried out on each and every other rate at a high load using Method A;
(ii) the total units are recorded on one register, only this register is required to be tested in accordance with paragraphs 5 and 6.

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Source: https://www.legislation.gov.uk/uksi/1990/792/schedule/1/paragraph/7 (the official version)
Page: https://openlegislation.uk/meters-certification-regulations-1990/schedule-1/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.