Weights and Measures Regulations — 270
270 (1) In this section, API Gravity means the amount obtained using the following formula: API Gravity = 141.5 relative density 60/60°F – 131.5; ( densité API ) API Standard means the Manual of Petroleum Measurement Standards , published by the American Petroleum Institute in August, 1980, with the designation “API, Standard 2540”; ( norme API ) ASTM means the American Society for Testing and Materials; ( ASTM ) ASTM-IP means the American Society for Testing and Materials — Institute of Petroleum; ( ASTM-IP ) VCF means, in respect of a mechanical or electronic automatic temperature compensator, the applicable volume correction factor (a) at the temperature of the measured liquid during each test of the compensator, in the column corresponding to the density at 15°C in kilograms per cubic metre for which the compensator is marked or adjusted, or to the density corresponding to the cubical coefficient of thermal expansion, relative density or API gravity for which the compensator is marked or adjusted, that is set out (i) in the case of natural crude oil, in Table 54A of the API Standard, (ii) in the case of generalized liquid petroleum products, in Table 54B of the API Standard, and (iii) in the case of lubricating oils, in Table 54D of the API Standard, (b) at the temperature of the measured liquid during each test of the compensator, in the column corresponding to the agreed or experimentally determined cubical coefficient of thermal expansion at 15°C for that liquid and for which the compensator is marked or adjusted, that is set out, in the case of special petroleum liquids to which Tables 54A, 54B and 54D of the API Standard are not applicable, in Table 54C of the API Standard, or (c) at the temperature of the measured liquid during each test of the compensator, in the column corresponding to the density at 15°C in grams per litre for which the compensator is marked or adjusted, or to the density corresponding to the cubical coefficient of thermal expansion, relative density or API gravity for which the compensator is marked or adjusted, that is set out, in the case of liquefied petroleum gases, natural gas liquids and asphalts, in Table 54 of the ASTM-IP Petroleum Measurement Tables , with designation ASTM D1250, 1953 Metric Edition. ( FCV ) (2) Subject to subsections (4) to (6), the limits of error set out in the table to this subsection apply in respect of mechanical automatic temperature compensators used in conjunction with meters in the measurement of liquids. TABLE Column I Column II Column III Item Known Test Quantity Acceptance Limits of Error In-Service Limits of Error 1 Test volume shall be in accordance with specifications established pursuant to section 13 for mechanical automatic temperature compensators for use with any device or class, type or design of device The ratio NET/GROSS shall lie in the range from (VCF-0.0010 -0.00018ΔT) to (VCF+0.0010 +0.00009ΔT) The ratio NET/GROSS shall lie in the range from (VCF-0.0020 -0.00036ΔT) to (VCF+0.0020 +0.00018ΔT) (3) In the table to subsection (2) and in subsections (5) and (7), (a) NET is the corrected registration of the register and GROSS is the uncorrected registration of the register; and (b) ΔT is the difference in degrees Celsius (i) between the test temperature and 15°C where the compensator is used with a meter designed to measure liquids at ambient temperature, or (ii) between the test temperature and the mid-range temperature of the compensator, where the compensator is used with a meter designed to measure liquids at temperatures other than ambient temperature, and for the purposes of calculating the limits of error, “ΔT” shall not exceed 15°C except in the case of a compensator used with a meter designed to measure liquids at ambient temperature. (4) The acceptance limits of error set out in Column II of the table to subsection (2) apply only to tests made under controlled conditions, and for tests made under other conditions the limits of error set ou