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• 270 (1) In this section,

  VCF

  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

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  • (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.

  	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 [...]	The ratio NET/GROSS shall lie in the range from [...]

• (3) In the table to subsection (2) and in subsections (5) and (7),

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  • (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.

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• (5) In addition to being within applicable limits of error, the NET/GROSS ratios shall agree within 0.001 on at least two of three consecutive tests at the same temperature under controlled conditions.

• (6) The limits of error for mechanical automatic temperature compensators submitted for approval pursuant to section 3 of the Act shall be one half the limits of error set out in the table to subsection (2).

• (7) The limits of error set out in the table to this subsection apply in respect of electronic automatic temperature compensators used in conjunction with meters in the measurement of liquids.

  	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 electronic automatic temperature compensators for use with any device or class, type or design of device	The VCF applied to the gross registration shall be not more than the VCF corresponding to a temperature that is 0.5°C less than the test temperature, and not less than the VCF corresponding to a temperature that is 0.5°C more than the test temperature	The VCF applied to the gross registration shall be not more than the VCF corresponding to a temperature that is 1°C less than the test temperature, and not less than the VCF corresponding to a temperature that is 1°C more than the test temperature

• (8) Where an automatic temperature compensator referred to in subsection (7) is not marked as described in the definition VCF in subsection (1), the printed ticket, card, bill of lading or other printed record of a transaction shall specify the density, relative density, API gravity or cubical coefficient of thermal expansion, as appropriate, for which the compensator is adjusted, for each delivery by the meter.

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