Icon Process Controls Level Pro UltraPro 500 Series Instruction Manual page 7

ULTRAPRO 500 MANUAL
Ultrasonic level meters
g) Foam may be produced on the surface of the measured liquid
during filling, mixing and other processes. The thick foam
significantly absorbs the ultrasound signal and may cause
malfunction of the device (Fig. 5). In those cases it is necessary to
test the device in advance and, if necessary, to contact the
manufacturer.
h) The site for installing the level meter needs to be chosen so that
the emitted acoustic signal is not affected by nearby objects
(reinforcements, supports, brackets, ladders, heating elements,
mixers, etc.). These obstacles may result in false rebounds,
Fig. 6: Minimum distance from close objects in the tank
increasing measurement inaccuracy (Fig. 6).
i) Do not install the device in or above the filling point (Fig. 7).
The measurement could be affected by the inflowing medium.
j) Applicability for measuring the surface level of bulk-solid materials is limited, the range of measurement is shorter
there. We recommend to consult the suitability of the device for measuring
Fig. 7: Installation of the device out of reach of filling circulation
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Fig. 5: Thick foam on the surface
x > c/12
UPS_–53–01 ;02 ; 10
(min. 200 mm)
x > c/8
UPS_–53–06
(min. 200 mm)
x > c/10
UPS_–53–20
(min. 200 mm)
x– distance from the edge of the longest object
c – maximum reach of the level meter
R