AFLOWT LV Series, Installation Manual

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3. MOUNTING CONSIDERATIONS
3.1. Site requirements for mounting AS should be as follows:
- Tank (channel, pipeline) operation conditions exclude foreign items on
the surface of media interface within the area of measurements
- Liquid turbulence and pulsations are absent or minimal
- Foams on the surface of media interface are minimal
- There are no structural components on the way of acoustic beam from
PEP to the media interface
- Foreign items inside the AS sound guide are excluded
- Icing over PEP emitting surface and reference reflector surface as well
as built-up of ice caused by fumes inside the sound guide are
prevented.
3.2. AS can be mounted on a horizontal section of tank (channel, pipeline).
Mounting location is selected considering the minimal distance from
media interface to the AS base plane that must be no less than:
- 1400 mm
– for acoustic systems of AS-40x-xx0 and AS-50x-xx0
versions
- 800 mm
– for acoustic systems of AS-11x-xx3, AS-6xx-xx0, and AS-
7xx-xx0 versions.
3.3. AS must be mounted in vertical plane. Deflection of the sound guide axis
from the vertical axis must not exceed 3 degrees of arc.
It is recommended to mount acoustic systems of suspended type
AS-50x-xx0, and AS-7xx-xx0 in the areas where rocking by wind and
draft is excluded.
3.4. The on-site structure where AS is installed must be rigid enough to
prevent sound guide axis shift from the vertical and shift of the base
plane from the vertical.
Flanges on the ends of the acoustic system are fixed to the mount
adaptor via a rubber gasket included in the set of AS fittings.
3.5. When mounting (dismounting) and operating the Level gauge, protection
of PEP emitting surface from impacts must be provided.
3.6. The following conditions should be observed at the site of BMD
installation:
- Operation conditions are in accordance with the requirements of the
Operation Manual
- Free access to BMD and convenience in operation is provided
3.7. BMD must not be installed in areas where it can be exposed to water jets
or near sources of heat and electromagnetic radiation.
3.8. When mounting the two-channel Level gauge, the components originally
assigned to a particular measuring channel must be used: serial
numbers of the components specified in the Equipment Certificate and
marking of connection cables must relate to the measuring channel of a
particular number. The connection cables must not be changed in
length.
3.9. The following components may be sealed on completion of on-site
mounting procedure:
- Two fixing screws located on the front panel of BMD
- Cover of Communication Block case
- Cover of RTD (if applicable).