Instruction manual

7ML19985CL02 SITRANS LR 300 – INSTRUCTION MANUAL Page 51
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Applications
Application Example: Juice Batch Tank with Sanitary
Horn Antenna
Run: To start normal operation, press the PROGRAM key .
Parameter Enter
P999 ---- master reset
P001 1 mode of measurement = level
P002 1 material = liquid
P003 2 measurement response = 1m/min.
P004 240 antenna = factory
P005 1 units = meters
P006 5 empty distance = 5m
P007 4.5 span = 4.5m
P070 2 Fail-Safe timer = 2 minutes
P071 1 Fail-Safe = Hi
P820 12 algorithm = First Echo
P830 7 TVT type = factory
P837/838
(Note above)
2 & 1 Auto False Echo Suppression
Notes:
• The minimum distance from the flange face to the target is limited by near-blanking
P800.
• Only set P837 if the product is at least 2m (78”) away from the flange face. If it is
closer, leave P837 at 1 until the level drops and the distance increases beyond
2m (78”).
• Choose First only (P820 = 12) if the SITRANS LR 300 is in the center. Otherwise,
keep it at 8 (bLF).
• Sanitary Antenna Options: The one-piece antenna/process seal provides an
excellent mounting method, even on non-sanitary installations.
P007
Existing 4"
tri-clamp
connection
This application is to obtain a level
measurement and corresponding
4-20 mA output proportional to the
juice level on a batch process tank.
The bottom of the horn is 5m from
the tank bottom. The empty level is
0m (bottom) and the full level (span)
is 4.5m from the bottom. The
maximum rate of filling or emptying
is about 0.5m/min.
In the event of a loss of echo, the
SITRANS LR 300 is to go into Fail-
Safe Hi after 2 minutes.
P006
Mixer
4"
S
an
i
tary
H
orn
Mixer
SITRANS LR 300.book Page 51 Monday, June 10, 2002 7:18 PM