Magnetrol R82 사용자 설명서
11
58-610 Model R82 Radar Transmitter
2.3.3.3 Problematic Applications; GWR Alternative
Some application concerns can be problematic for Radar.
For these, Guided Wave Radar is recommended:
For these, Guided Wave Radar is recommended:
• Extremely low dielectric media (
ε
r
<2.0)
• Very weak reflections from the liquid surface, particularly
during turbulence, can cause poor performance.
• Tanks heavily cluttered with false targets (mixers, pumps,
ladders, pipes, etc.)
• During times of very low liquid levels of low dielectric media,
the metal tank bottom may be detected deteriorating per-
formance.
formance.
2-inch (50 mm) Antenna
8-inch (200 mm) Antenna
13"
(330 mm)
7"
(178 mm)
15" (380 mm) Minimum
(measured from
bottom of threads or
flange face)
2-inch (50 mm)
Antenna
Maximum Recess (m) is 2 × Nozzle Diameter (d)
(example: 2" diameter nozzle)
8-inch (200 mm)
Antenna
Maximum
Liquid Level
Maximum
Liquid Level
m
d
15"
(380 mm)
2" (50 mm)
4" (100 mm)
15"
(380 mm)
8" (200 mm)
9" (225 mm)
3" (75 mm)
4" (100 mm)
d
Figure X
<Caption>
Figure X
<Caption>