![Emerson Rosemount 3101 Скачать руководство пользователя страница 23](http://html.mh-extra.com/html/emerson/rosemount-3101/rosemount-3101_reference-manual_104699023.webp)
11
Reference Manual
00809-0100-4840, Rev CB
February 2015
Avoid mounting the transmitter directly over any inlet stream.
Liquid surface turbulence is not normally a problem unless it is excessive. The effects of
turbulence are minor, but excessive turbulence can be dealt with by fine-tuning the
transmitter on site, if necessary.
3.3.3
Consider in-tank effects
Stirrers or agitators can cause a vortex. Mount the transmitter off-center of any vortex
to maximize the return echo.
If stirrer blades become uncovered, they create echoes as they pass through the
ultrasonic beam. The transmitter can learn to ignore these false echoes (see
or
).
In tanks with rounded or conical bottoms, mount the transmitter off-center. If needed,
a perforated reflector plate can be installed on the tank bottom directly under the
transmitter center line to ensure a satisfactory return echo.
Avoid detecting pump casings, as the liquid falls away, by not mounting the transmitter
directly above pumps. If this is not possible, fine-tuning of the transmitter on-site may
be required.
Figure 3-2. Tank Installation Considerations
A. Transmitter is Mounted Vertically (Maximum Deviation of 3°)
B. Use Non-metallic Fitting or Flange
C. 6° Beam Half Angle
D. 1.3 in./ft. (11 cm/m). Minimum of 12 in. (0,3 m)
A
D
B
C
Содержание Rosemount 3101
Страница 2: ......
Страница 4: ...ii Reference Manual 00809 0100 4840 Rev CB Title Page February 2015 ...
Страница 12: ...x Reference Manual 00809 0100 4840 Rev CB Contents February 2015 Contents ...
Страница 34: ...22 Reference Manual 00809 0100 4840 Rev CB Section 3 Installation February 2015 Installation ...
Страница 68: ...56 Reference Manual 00809 0100 4840 Rev CB Section 4 Starting up February 2015 Starting up ...
Страница 112: ...100 Reference Manual 00809 0100 4840 Rev CB Appendix B Product Certifications February 2015 Product Certifications ...
Страница 120: ...108 Reference Manual 00809 0100 4840 Rev CB Appendix C Integrated Display Menus February 2015 Integrated Display Menus ...
Страница 128: ...116 Reference Manual 00809 0100 4840 Rev CB Appendix E Field Communicator Menus February 2015 Field Communicator Menus ...
Страница 236: ...224 Reference Manual 00809 0100 4840 Rev CB Index February 2015 Index ...
Страница 237: ......
Страница 238: ......
Страница 239: ......