Weights and Measures Regulations (C.R.C., c. 1605)

Regulations are current to 2014-06-12 and last amended on 2012-05-01. Previous Versions

Design, Composition and Construction

  •  (1) If the accuracy of registration, including the zero weight indication, of a portable machine is affected when it is off level, the machine shall be equipped with a self-locking or lockable means of levelling and a level indicator.

  • (2) An electronic computing machine shall be equipped with a level indicator that is easily visible or with the tools that are necessary to expose the level indicator if it is not easily visible.

  • SOR/2012-28, s. 5.
  •  (1) An electronic machine shall be equipped with an automatic motion detector to prevent the registration of weight values until the weight indication is stable within

    • (a) plus or minus one times the value of the minimum increment of registration, if the electronic machine has a capacity of 2000 kg or less; or

    • (b) plus or minus three times the value of the minimum increment of registration, if the electronic machine has a capacity of more than 2000 kg.

  • (2) An electronic computing machine shall be equipped with an automatic motion detector to prevent the registration of weight values until the weight indication is stable within plus or minus one times the value of the minimum increment of registration.

  • (3) The weight indication of an electronic machine shall be stable, in accordance with subsections (1) and (2), for at least 0.4 of a second before registering a weight value.

  • (4) The zero-setting mechanism and the zero-tracking mechanism circuits of an electronic machine shall be interlocked with the motion detector so that these mechanisms are inoperative while motion is being detected.

  • SOR/2012-28, s. 5.

 The registration of monetary value determined by an electronic computing machine shall equal the product of the weight indication multiplied by the unit price. It is to be rounded to the nearest cent as follows:

  • (a) when the digit next beyond the second decimal is less than 5, the second decimal is to be kept unchanged;

  • (b) when the digit next beyond the second decimal is greater than 5, or is 5 followed by one or more digits other than zeros, the second decimal is to be increased by one; and

  • (c) when the digit next beyond the second decimal is 5 and is followed by no other digits or by one or more zeros, the second decimal is to be kept unchanged if it is even and be increased by one if it is odd.

  • SOR/2012-28, s. 5.
  •  (1) The tare function of an electronic machine shall operate only in a negative direction in relation to zero.

  • (2) The tare function control mechanism of an electronic machine shall be identified with the word “TARE”, the letters “TR”, or with words or letters that convey the same meaning.

  • (3) An electronic machine may be equipped with full-scale tare; however, the gross weight shall not exceed the rated capacity of the machine in accordance with the limits set out in section 170.

  • (4) The value of the minimum increment of tare of an electronic machine shall be the same as the value of the minimum increment of registration.

  • (5) The use of any mechanism to convert units of measurement (for example, a pound/kg switch) shall be inhibited when the tare is entered into the memory of an electronic machine, unless the mechanism converts all values of weight registration when activated.

  • (6) The tare function of an electronic computing machine shall be self-cancelling so that when any net weight is added to the tare, the total is computed, and when the gross weight is removed from the machine, the weight indication returns to zero in accordance with section 183, unless the machine is in prepackaging mode.

  • (7) A tare entry shall be automatically erased from an electronic computing machine’s memory only after the completion of the weighing operation. The entry of another price per unit of weight, the use of a “clear” mechanism or any other keying sequence shall not affect the tare entry.

  • (8) An electronic computing machine with a tare function shall be equipped with a power failure interlock mechanism that prevents the continuation of the weighing operation when there is a temporary loss of power. When there is a loss of power to an electronic computing machine, all visual indications of the tare function shall extinguish and remain extinguished even when power is restored.

  • (9) A negative weight value shall continue to be displayed on an electronic computing machine when the load-receiving element is empty and the tare function is in operation.

  • (10) There shall be a visual indication on or adjacent to the weight display of an electronic computing machine when the tare function is in operation.

  • (11) If an electronic machine, other than an electronic computing machine, displays only one weight value at a time, there shall be visual indication on or adjacent to the weight display that indicates that the tare function is in operation.

  • (12) If an electronic machine, other than an electronic computing machine, is capable of registering gross, net or tare weight, the weight values shall be clearly identified.

  • SOR/2012-28, s. 5.