Siemens SITRANS FC330, Руководство по эксплуатации, Страница: 54 / 280

Prevent cross talk in one of the following ways:
● Mount sensors on separate frames
● Decouple the pipeline using flexible tube or couplings
Figure 4-10 High risk of cross talk when using non-flexible pipes
Figure 4-11 Low risk of cross talk when using flexible pipes and separate frames
4.2.2.5 Hydrostatic testing
The flowmeter is pressure-tested before delivery to 1.5 times the rated working pressure of the
sensor.
In all cases the maximum allowed hydrostatic test pressure (MATP) of the flowmeter is 1.5
times the marked MAWP (PS) at 20 °C.
Pressure test of a completed flow system with piping and other components can be done at
pressures no higher than 1.5 times the marked MAWP (PS) at 20 °C of the lowest rated system
component.
4.2.2.6 Installing with insulation
Insulation is added to pipes and equipment for two reasons:
● To protect personnel from exposure to hot or cold surfaces, thereby preventing burns and
other injuries
● To prevent heat loss into or out of the process, thereby preserving the process temperature
and process medium conditions.
Installing/mounting
4.2 Installation instructions
SITRANS FC330
54
Operating Instructions, 01/2019, A5E44030648-AB