Dinel ULM-53L-10 사용 설명서 - 페이지 9

{카테고리_이름} Dinel ULM-53L-10에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Dinel ULM-53L-10 16 페이지. Ultrasonic level meters

k) The level meter must not be installed in places

with direct solar radiation and must be protected

against weather conditions.

l) In case the installation at places with direct solar

radiation is inevitable, it is necessary to mount

a shielding cover above the level meter (Fig. 8).

m) To lower the minimum distance to the medium meas-

ured, a reflection board made from solid, even and

smooth material can be installed together with the

level meter (Fig. 10). Subsequently, the tank can be

filled nearly up to the maximum volume. The solution

is suitable for open tanks and reservoirs.

n) Scattering or attenuation of the ultrasonic signal can

result if the surface level has been moderately stirred

or rippled as a consequence a stirrer's operation,

inflow of liquid and the like. Consequently, measuring

range or unreliable level meter's functioning might

follow (Fig. 11).

o) False surface reflections of the ultrasonic signal

might result as a consequence of rotating mixer's

blades that ripple the surface level and thus cause

unreliable level meter's functioning (Fig. 12).

p) The level meter should not be installed at places

where ultrasonic signal false reflections caused

by stirrer blades might occur (Fig. 13).

Fig. 10: Moderately stirred

surface

ULM–53L

Fig. 11: Intensely stirred

surface

Fig. 8: Direct solar radiation shielding

cover

H + L = Dead zone

Fig. 9: Reflection board

Fig. 12: False reflection caused by

mixer blade