The Measuring Instruments (Cold-water Meters) Regulations 2006 (revoked)

Rated Operating Conditions U.K.

14.  The manufacturer shall specify the rated operating conditions for the instrument, in particular—

(a) the flowrate range of the cold water, the values for which shall fulfil the following conditions—

(i) Q₃/Q₁ ≥ 10;

(ii) Q₂/Q₁= 1.6;

(iii) Q₄/Q₃ = 1.25,

and for 5 years from the date of entry into force of the Directive the ratio Q₂/Q₁ may be 1.5, 2.5, 4 or 6.3;

(b) the temperature range of the cold water, the values for which shall be 0.1°C to and including 30°C;

(c) the relative pressure of the cold water, the range being 0.3 bar to at least 10 bar at Q₃; and

(d) for the power supply, the nominal value of the AC voltage supply and/or the limits of DC supply.