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Regulation 8 Reference meters for water

Original text. Later amendments are not shown.

(1)

Reference meters for water shall be tested with water either—

(a)

by means of a proving tank for water which is of sufficient size to hold at least 10 l or one minute’s delivery of the meter under test whichever is the greater; or

(b)

by means of a weighing machine, the repeatability of which shall be not more than 0.05 per cent of the weight of the water delivered by the meter under test, and which can weigh at least 10 kilograms or one minute’s delivery of the meter under test whichever is the greater.

(2)

The proving tank for water or the weighing machine used to test a reference meter for water shall have a discrimination threshold of not more than 0.05 per cent of the quantity delivered by the meter under test.