Electricity and Gas Inspection Regulations
(a) any meter, other than a supercompressibility correcting meter, shall be, subject to subsection (2), established in accordance with a procedure, approved by the director, based on
(i) the pressure exerted by the gas within the meter and the temperature of the gas flowing through the meter as determined by continuous monitoring at the meter location;
(ii) the relative density, the carbon dioxide content and the nitrogen content of the gas being measured as determined by
(iii) where the parameters of the gas referred to in subparagraphs (i) and (ii) vary, either the time weighted or the volume weighted averages of those parameters during the period the volume of the gas is measured by the meter; and
(b) any supercompressibility correcting meter, shall be one.
(2) A supercompressibility factor of one may be used for any meter for which the pressure exerted by the gas within the meter expressed on the gauge pressure scale does not exceed
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