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12. The manufacturer shall specify the rated operating conditions of the relevant instrument, taking the following into account—
(a)the flowrate range of the relevant instrument shall fulfil at least the following conditions—
Class | Qmax/Qmin | Qmax/Qt | Qt/Qmax |
---|---|---|---|
1.5 | ≥ 150 | ≥ 10 | 1.2 |
1.0 | ≥ 20 | ≥ 5 | 1.2 |
(b)the temperature range of the gas, with a minimum range of 40 °C;
(c)fuel/gas related conditions—
the relevant instrument shall be designed for the range of gases and supply pressures of the country of destination. In particular, the manufacturer shall indicate—
(i)the gas family or group;
(ii)the maximum operating pressure;
(d)a minimum temperature range of 50 °C for the climatic environment;
(e)the nominal value of the AC voltage supply and/or the limits of the DC supply.
Commencement Information
I1Sch. 1 para. 12 in force at 30.10.2006, see reg. 1(2)