Nivus NivuFlow 650, Инструкция по эксплуатации

Страница: 82 / 173

Instruction Manual
NivuFlow 650
page 82 NF 650 - rev. 01 / 29.06.2020
Selecting the measurement medium
Choose “User defined” if your medium to be measured is not in the list.
This action opens another menu point where you need to specify e.g. the speed of sound
within the medium.
Tip:
Lists providing various speeds of sound can be found on the Internet or contact your local
distributor or NIVUS GmbH.
32.1.7 Medium Temperature
The medium temperature must initially be entered once and as accurately as possible; it is
required for correctly initializing the transmitter.
32.1.8 Channel Profiles
The transmitter allows selecting from a wide variety of standardised channel profiles mainly
used in practice.
Since particularly older channel systems often have special shapes, the transmitter moreover
provides the option to enter dimensions or heights/areas of symmetric and asymmetric chan-
nels in tables.
The profile chosen is shown as graph in the 3D preview box if selected. To indicate the graph
the dimensions entered are set in relation to one another.
This visual control is important to instantly see whether the profile has been basically created
correctly. Particularly for free profiles this kind of direct verification is helpful.
Select from the available channel profiles:
• Pipe
• Ellipse
• Egg profile (1:1,5)
• Rectangle
• U-Profile
• Trapezoid
• Channel
• Channel (local datum)
• Height-Width (sym.)
• Height-Width (asym.)
• Height-Area
• Q=f(h)
 Ü
Select profile.
The dimensional values are entered as soon as the profile has been chosen. The unit is
set to meter [m] by default. This can be changed in the >System< / >Region Settings< /
>Units< / >Level< menu (Fig. 32-4).