Division Rated Operating Conditions

The manufacturer shall specify the rated operating conditions for the instrument, in particular:

1. 1..

   F1The flowrate range of the water.

   The values for the flowrate range shall fulfil the following conditions:

   • Q ₃ /Q ₁ ≥ 40

   • Q ₂ /Q ₁ = 1,6

   • Q ₄ /Q ₃ = 1,25

2. 2..

   The temperature range of the water.

   The values for the temperature range shall fulfil the following conditions:

   • 0,1 °C to at least 30 °C, or

   • 30 °C to at least 90 °C.

   The meter may be designed to operate over both ranges.

3. 3..

   The relative pressure range of the water, the range being 0,3 bar to at least 10 bar at Q₃.

4. 4..

   For the power supply: the nominal value of the AC voltage supply and/or the limits of DC supply.