Category: Volume
Bulletin: V-10 (rev. 2)
Document(s): W&M Regs, section 270; API Table 54C
Issue date: 2008-04-01
Effective date: 2008-04-01
Supersedes: V-10 (rev.1), V-12, V-13, V-14
Table of contents
1.0 Purpose
The purpose of this bulletin is to establish policy regarding the use of automatic temperature compensation (ATC) for non-petroleum products and to provide a source for tables of volume correction factors (VCFs) when inspections involve those products identified herein.
2.0 Scope
This bulletin applies to the inspection of all approved volume meter registers and flow computers that are installed with ATC devices for use in trade.
3.0 References
Product specific tables of VCFs can be found on the Volume information page of Measurement Canada's web site. These tables have been identified to provide the inspector or technician with VCFs authorized for use in the inspection, testing and verification of ATC devices used with the specified products.
4.0 Background
During the early 1990s, Measurement Canada permitted various non-petroleum based products to be automatically corrected to reference conditions and subsequently, established VCF tables where no tables had been specified in section 270 of the Weights and Measures Regulations. These product VCFs were initially documented in bulletin V-10 (rev. 1), V-12 and V-13.
4.1 More recently, when requested to allow additional products to be sold on a temperature corrected basis, it was determined that section 236 of the Weights and Measures Regulations only allows a device to register in terms of volume correction to reference conditions when a specification has been developed by the Minister. Accordingly, section 4 of SVM 2 allows for the net registration of liquid petroleum products, liquefied petroleum gases and natural gas liquids. Currently, no other specifications have been developed to allow for net registration of any other products.
5.0 Policy
Measurement Canada does not recognize or condone the use of ATC for any products other than liquid petroleum products, liquefied petroleum gases, natural gas liquids and those products specifically listed in section 5.1 and 5.2 of this bulletin.
The use of ATC for the products listed in this bulletin will be reviewed on a periodic basis to determine if the practice of temperature correction should be continued. Interested parties will be given the opportunity to provide comments when such decisions are being considered.
5.1 Volume correction factors for pure liquids
5.1.1 Listed below are the pure liquids involved along with the corresponding authorized values of cubical coefficient of thermal expansion at 15°C for use with API Table 54C.
| Pure Liquids | Cubical Coefficient of Thermal Expansion @ 15°C per °C |
|---|---|
| Methanol (methyl alcohol anhydrous) | 0.001180 |
| Ethanol (ethyl alcohol anhydrous) | 0.001072 |
| Isopropyl Alcohol (anhydrous) | 0.001016 |
| Acetone (dimethyl ketone) | 0.001416 |
| Methyl Isobutyl Ketone | 0.001152 |
| Methyl Ethyl Ketone | 0.001280 |
| Hexylene Glycol | 0.000788 |
| Methyl Isobutyl Carbinol | 0.000698 |
| Anhydrous Ammonia | Value not listed because it is out of range for use with API Table 54C. VCF Table must be referenced. |
Note: Summary VCF tables for each liquid can be found on the Volume information page of Measurement Canada's web site.
5.2 Volume correction factors for liquid blends
5.2.1 Listed below are the specific liquid blends involved along with their blend ratio and density ranges
| Liquid | Blend Ratio | Density Range at 15 °C |
|---|---|---|
| Toluene | 95 -100 % (Toluene) by Volume | 869 to 873 kg/m3 |
| Xylene | All blends of O-, M- and P-Xylene | 865 to 875 kg/m3 |
Note: Summary VCF tables for each liquid can be found on the Volume information page of Measurement Canada's web site.
6.0 Revision
The original bulletin was issued on September 01, 1993, as bulletin V-13.
6.1 The purpose of Revision 1 (Bulletin V-13) was to reformat and establish as Bulletin V-10 (rev. 1) in a revised set of bulletins issued September 20, 1996.
6.2 The purpose of revision 2 (Bulletin V-10 rev.1) was to combine several related bulletins (V-10 r1, V-12, V-13, and V-14) into one document and subsequently, revoked the redundant Bulletins V-12, V-13, and V-14. Additionally, the 88% Isopropyl Alcohol and 12% water mixture identified in Bulletin V-13 was removed from the list of liquids involved.
6.2.1 In this revision the format was updated to include new purpose, scope, background and policy sections. Minor editorial modifications from the original bulletins were implemented for clarification and to suit the new format. Further to this, the associated VCF tables were removed from the documents and relocated to the Volume information page of the Measurement Canada web site.