This is the original version (as it was originally made). The electronic version of this UK Statutory Instrument has been contributed by Westlaw and is taken from the printed publication. Read more
5. Before commencing material testing of the discontinuous totaliser, the inspector shall satisfy himself that the non-automatic weighing machine available in accordance with Regulation 26(2) is such that the arrangements to be used for determining the weight of material used in material testing will give weight determinations of each test load to an accuracy equal to or better than one-fifth of the prescribed limits of error for material testing, whether such test load is determined in one or more weighing operations.
6.—(1) With the load receptor of the discontinuous totaliser empty, the inspector shall ensure that—
(a)the totalisation indicating device is set to zero, and
(b)any individual weight indicating device is set to zero or a given point.
(2) A minimum of two individual tests, each consisting of 20 separate loads, shall then be carried out on the machine under normal conditions of use in accordance with sub-paragraph (3) below.
(3) At least two of the individual tests referred to in sub-paragraph (2) above shall consist of tests involving the weighing on the machine of approximately the same quantity of suitable material, at least equal to the minimum totalised load marked on the machine.
(4) Where the quantity of material weighed by the machine can vary, each individual test referred to in sub-paragraph (2) above shall be made with a quantity of suitable material as nearly as practicable equal to the minimum totalised load and another individual test consisting of 20 separate loads with a quantity of suitable material as nearly as practicable equal to the maximum capacity shall then be carried out on the machine.
(5) For each of the tests carried out in accordance with sub-paragraphs (2), (3) and (4) above, the inspector shall determine:—
(a)the weight of material used in the test using the arrangements referred to in paragraph 5 above;
(b)the material testing error by ascertaining the difference between the weight of the material determined in accordance with sub-paragraph (a) above and the value for that weight of the material obtained from the totalisation indicating device.
(6) Subject to sub-paragraph (7) below, the inspector shall determine the repeatability error for each of the tests carried out in accordance with sub-paragraph (3) above, being the difference between the material testing errors determined in accordance with sub-paragraph (5) above.
(7) Before 1st January 1988, the inspector shall not carry out his duty specified in sub-paragraph (6) above in respect of any discontinuous totaliser which is made in accordance with a pattern in respect of which a certificate of approval was in force before the date of coming into operation of these Regulations.
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