R
Ultrasonic level meters
ULTRAPRO 500 MANUAL
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k) The measuring device shall not be installed in places with direct sunlight and
shall be protected against weather conditions.
l) If installation in places with direct sunlight is inevitable, it is necessary to
mount a shielding cover above the device (Fig. 8).
m) It is advisable to keep cable under the cable gland (sagging down) as shown
in Fig. 9 to prevent penetration of moisture. Rain and condensing water can be
therefore drained away freely.
n) The cable gland as well as the connector shall be tightened sufficiently to
prevent penetration of moisture.
o) The ultrasonic signal can be scattered or attenuated if the surface is
moderately stirred or rippled (due to a mixer, inflow of liquid, etc.). This may
result in reduction of the measurement range or unreliable operation of the
device (Fig. 10).
p) False surface reflections of the ultrasonic signal and unreliable operation of
the device might result from the mixer's rotating blades that ripple the surface
level(Fig. 11).
q) The device should not be installed in places with the risk of false reflections of
the ultrasonic signal from the mixer's blades (Fig. 12).
r) Horn adapter ST–G1 (for UPS-500_–02), ST–G1,5 (for UPS-500_-06) or
ST–G2,25 (for UPS-500_–10) for improved reception of the transmitted signal
can be used in open chanels, sumps, etc.
s) Horn adapter ST increases the directivity of the emitted acoustic waves,
improves the reception of weak echoes (unstable surface level, loose
materials) and reduces the risk of false reflections.
t) The horn adapter is installed on the device via process.
!
Fig. 8: Shielding cover against
direct sunlight
Fig. 9: Protection against penetration
of moisture
Fig. 10: Moderately
stirred surface
!
Fig. 11: Strongly
stirred surface
Fig. 12: False reflection
from mixer blades
Fig. 13: Horn adapter installation
Horn adapter ST