# The Non-automatic Weighing Instruments (EEC Requirements) Regulations 1995, Paragraph 3: Units of mass


Classification
3.1. Instruments with one weighing range
Instruments equipped with an auxiliary indicating device shall belong to class I or class II. For these instruments the minimum capacity lower limits for these two classes are obtained from Table 1 by replacement in column 3 of the verification scale interval (e) by the actual scale interval (d).
If d < 10−4 g, the maximum capacity of class I may be less than 50 000 e.
3.2. Instruments with multiple weighing ranges
Multiple weighing ranges are permitted, provided they are clearly indicated on the instrument. Each individual weighing range is classified according to 3.1. If the weighing ranges fall into different accuracy classes the instruments shall comply with the severest of the requirements that apply for the accuracy classes in which the weighing ranges fall.
3.3. Multi-interval instruments
3.3.1. Instruments with one weighing range may have several partial weighing ranges (multi-interval instruments).
Multi-interval instruments shall not be equipped what an auxiliary indicating device.
3.3.2. Each partial weighing range i of multi-interval instruments is defined by:
— its verification scale interval ei
with e*(i+1) > ei
— its maximum capacity Maxi
with Maxi = Max
— its minimum capacity Mini
with Mini = Max( − 1)
and Min1 = Min
where:
i = 1, 2, . . . r,
i = partial weighing range number,
r = the total number of partial weighing ranges.
All capacities are capacities of net load, irrespective of the value of any tare used.
3.3.3. The partial weighing ranges are classified according to Table 2. All partial weighing ranges shall fall into the same accuracy class, this class being the instrument’s accuracy class.
Table 2
Multi-interval instruments
Class
Verification scale interval (e)
Minimum capacity (Min)
Number of verification scale intervals
Minimum value
Minimum value
Maximum value
n=Maxie(i+1)
n=Maxiei
(1) For i = r the corresponding column of Table 1 applies, with e replaced by er.
I
0,001 g ≤ ei
100 ei
50 000
—
II
0,001 g ≤ ei ≤ 0,05 g
20 ei
5 000
100 000
0,1 g ≤ ei
50 ei
5 000
100 000
III
0,1 g ≤ ei
20 ei
500
10 000
IIII
5 g ≤ ei
10 ei
50
1 000

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Source: https://www.legislation.gov.uk/uksi/1995/1907/schedule/2/paragraph/3 (the official version)
Page: https://openlegislation.uk/non-automatic-weighing-instruments-eec-requirements-regulations-1995/schedule-2/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.