Siemens 7ML5431 - Application with Stillpipe

Commissioning
6.3 Application examples
SITRANS LR250 with mA/HART
66 Operating Instructions, 10/2019, A5E32220602-AG
Parameter type
Parameter No./Name
Options/
Values
Function
Quick Start Wiz-
ard parameters
Introduction
NEXT
Continue with Wizard.
Language
NEXT
Continue with current
language.
Material
LIQUID
Response Rate
MED
Medium =1 m/minute
Units
M
meters
Operation
LEVEL
Level is reported as
Volume when a vessel
shape is selected.
Low Calibration Point
3.5
3.5 m (11.48 ft)
High Calibration Point
0.5
0.5 m (1.64 ft)
Wizard Complete
FINISH
Transfers Quick Start
settings to device.
Independent
parameters
Vessel Shape (2.7.1.1.)
PARABOLIC
ENDS
Defines vessel shape.
Maximum Volume (2.7.1.2.)
8000
8000 liters
Vessel Dimension A (2.7.1.3.)
0.8
0.8 m (2.62 ft)
Vessel Dimension L (2.7.1.4.)
6
6 m (19.68 ft)
LOE Timer (2.5.2.)
2
2 minutes
Material Level (2.5.1.)
HI
Fail-safe level set to High
Return to Measurement: press Mode to start normal operation.
6.3.3 Application with stillpipe
Note
•
Near Range (2.8.1.)
(Blanking) will be set at the factory. Check the process connection
tag for specific values.
•
Suitable pipe diameters are 40 mm (1.5") to 100 mm (4").
•
The pipe diameter must be matched with the antenna size. Use the largest antenna size
that will fit the stillpipe/bypass pipe. See
Dimensions (Page 183).
•
See Mounting on a Stillpipe or Bypass Pipe (Page 32) for installation guidelines.
This application is to obtain a level measurement and corresponding 4 to 20 mA output
proportional to the oil level in a fuel storage vessel.
● Low Calibration Pt. is 5 m (16.5 ft) from the sensor reference point.
● High Calibration Pt. is 0.5 m (1.65 ft) from the sensor reference point.
● The stillpipe inside diameter is 50 mm (1.96").
● The maximum rate of filling or emptying is about 0.1 m (4")/min.