Part 4, Section C: Standards Accuracy Class — Non Automatic Weighing Device
The following tables list the required accuracy standard for an inspection of a given device Non Automatic Device class. Individual tables are provided for Acceptance and In-Service as well as for Metric and Avoirdupois units of measure.
Metric Device type (NAWD) | E1 | E2 | F1 | F2 | M1 | M1-2 | M2 | M2-3 | M3 |
---|---|---|---|---|---|---|---|---|---|
I (when e ≥ 1 mg) | All | n ≤ 312 500 | - | - | - | - | - | - | - |
II (when e ≥ 1 mg) | All | All | All | All Footnote 1 | - | - | - | - | - |
III (e ≥ 0.1 g) | All | All | All | All | All | n ≤ 8 333 and e ≥ 20 g | n ≤ 1 667 | - | - |
III HD (e ≥ 2 kg) | All | All | All | All | All | n ≤ 36 666 | n ≤ 18 333 | - | - |
IIII (e ≥ 5 g) | All | All | All | All | All | e ≥ 200 g | All | e ≥ 500 g | All |
Metric Device type (NAWD) | E1 | E2 | F1 | F2 | M1 | M1-2 | M2 | M2-3 | M3 |
---|---|---|---|---|---|---|---|---|---|
I (when e ≥ 1 mg) | All | n ≤ 625 000 | n ≤ 133 000 | - | - | - | - | - | - |
II (when e ≥ 1 mg) | All | All | All | All Footnote 1 | n ≤ 13 333 and e ≥ 10 mg | - | - | - | - |
III (e ≥ 0.1 g) | All | All | All | All | All | e ≥ 20 g | n ≤ 8 333 | n ≤ 1 667 and e ≥ 50 g | n ≤ 1 333 |
III HD (e ≥ 2 kg) | All | All | All | All | All | All | n ≤ 36 667 | n ≤ 18 333 | n ≤ 2 000 |
IIII (e ≥ 5 g) | All | All | All | All | All | e ≥ 200 g | All | e ≥ 500 g | All |
Avoirdupois Device type (NAWD) | E1 | E2 | F1 | F2 | M1 | M1-2 | M2 | M2-3 | M3 |
---|---|---|---|---|---|---|---|---|---|
I | NA | n ≤ 312 500 | - | - | - | - | - | - | - |
II | NA | All | All | All Footnote 1 | - | - | - | - | - |
III (e ≥ 0.0002 lb or 0.005 oz) | NA | All | All | All | All | n ≤ 8 333 and e ≥ 0.05 lb | n ≤ 1 667 | - | - |
III HD (e ≥ 5 lb) | NA | All | All | All | All | n ≤ 36 666 | n ≤ 18 333 | - | - |
IIII (e ≥ 0.01 lb or 0.2 oz) | NA | All | All | All | All | e ≥ 0.5 lb | All | e ≥ 1 lb | All |
Avoirdupois Device type (NAWD) | E1 | E2 | F1 | F2 | M1 | M1-2 | M2 | M2-3 | M3 |
---|---|---|---|---|---|---|---|---|---|
I | NA | n ≤ 625 000 | n ≤ 133 000 | - | - | - | - | - | - |
II | NA | All | All | All Footnote 1 | n ≤ 13 333 and e ≥ 0.2 gr ≥0.0005 oz tr | - | - | - | - |
III (e ≥ 0.0002 lb or 0.005 oz) | NA | All | All | All | All | e ≥ 0.05 lb | n ≤ 8 333 | n ≤ 1 667 and e ≥ 0.1 lb | n ≤ 1 333 |
III HD (e ≥ 5 lb) | NA | All | All | All | All | All | n ≤ 36 667 | n ≤ 18 333 | n ≤ 2 000 |
IIII (e ≥ 0.01lb or 0.2 oz) | NA | All | All | All | All | e ≥ 0.5 lb | All | e ≥ 1 lb | All |
Notes:
- Class F2 is equal to Measurement Canada's Precious Metal Weight Kits.
- Class M1 is equal to Measurement Canada's Inspector's Weight Kits.
- n is the maximum number of scale intervals which can be verified on the indicated device type, with the indicated accuracy class standard.
Revision
Rev.1: Suspend restriction on Class II devices inspected with Precious Metal Weight Kits (OIML Class F2 weights)
Footnotes
- Footnote 1
-
This section is under review. Until further notice, Precious Metal Weights (OIML F2) are suitable for inspection of all Class II devices.