V-07—Increment of registration for volumetric liquid meters

Category: Volume
Bulletin: V-07 (rev. 1)
Document(s): W&M Regs. section 126 and 139; Spec. SVM-1 section 20
Issue date: 2007-09-01
Effective date: 2007-10-01
Supersedes: V-07


Table of contents


1.0 Purpose

The purpose of this bulletin is to clarify the requirements regarding the minimum increment of registration for liquid measuring devices.

2.0 Scope

This bulletin applies to volumetric liquid meter registers and their integral or remote mechanical or electromechanical printers. This bulletin does not apply to meters 8 inches or larger.

3.0 Background

Section 20 of the Specification SVM-1 provides information pertaining to the minimum increment of registration exclusive to electronic registers. Sections 126 of the Weights and Measures Regulations prescribe that the means of registration for a device must be appropriate for its intended service, installation and use. The same quantity indicated by more than one means of registration must be in agreement with the limits stated by Regulation 139.

4.0 Terminology

Registration includes both the displayed or printed value.

5.0 Policy

Subsections 5.1 and 5.2 set out the maximum values of minimum increment that will comply with these Regulations.

5.1 Mechanical registers with close-coupled mechanical or electromechanical printers

The maximum value of the minimum increment of registration on mechanical volumetric liquid meters shall be as follows:

5.1.1 Devices with an approved capacity of 1350 litres/minute or more; these devices are found mainly on loading racks and are intended to be used to measure quantities of 2250 litres or more.

Primary Indicator: 1 litre
Printer: 10 litres

5.1.2 Devices with an approved capacity of more than 500 litres/minute but less than 1350 litres/minute; these devices are found mainly on loading racks and are intended to be used to measure quantities of 180 litres or more.

Primary Indicator: 1 litre
Printer: 1 litre

5.1.3 Devices with an approved capacity of more than 115 litres/minute up to and including 500 litres/minute; these devices are normally found on loading racks, mounted on trucks, or used as truck refuellers and are intended to be used to deliver quantities of 180 litres or more.

Primary Indicator: 0.1 litre
Printer: 1 litre

5.1.4 Motor fuel dispensers and high speed dispensers with an approved capacity of more than 20 litres/minute up to and including 115 litres/minute.

Primary Indicator: 0.01 litre
Printer: 0.1 litre

5.2 Remote electromechanical printer connected to an electronic or mechanical register

5.2.1 Some electromechanical printers cannot be set to print to the same increment as the registers to which they are connected. At the normal operating rate these printers cannot accept the flow of pulses sent by the electronic register or the pulser of the mechanical register.

5.2.2 Consequently, the minimum increment of registration of an electromechanical printer used in conjunction with an electronic or a mechanical register may exceed the values indicated in 5.1, but shall not exceed those indicated hereafter provided that the device is used exclusively for selling, and provided that the printer is set so that "rounding off" of quantities is always in favour of the customer.

5.2.3 Devices with an approved capacity of more than 500 litres/minute.

Remote Printer: 10 litres

5.2.4 Devices with an approved capacity of more than 20 litres/minute up to and including 500 litres/minute.

Remote Printer: 1 litre

5.2.5 In the case of electromechanical printers, section 139 of the Regulations may be contravened in some instances, but any discrepancy will be in favour of the customer.

6.0 Revision

The purpose of revision 1 was to remove reference to the revoked regulation 128; update format and sequence; make editorial corrections, i.e., align terminology with SVM-1 and to correct the French version which mistakenly referred to R. 162 rather than 126.

Date modified: