Application With Stillpipe - Siemens LR250 Instruction Manual

Application with Stillpipe

Notes:
• 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
Mounting on a Stillpipe or Bypass Pipe
• See
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.
Parameter
Parameter No./Name
type
Material
Response Rate
Units
Quick Start
Operation
Wizard
Low Calibration Point
High Calibration Point
Wizard Complete
Propagation Factor (2.8.3.)
Indepen-
dent
Position Detect (2.8.4.2.)
parameters
CLEF Range (2.8.4.4.)
a)
The recommended values for the propagation factor and for CLEF range are dependent
on the stillpipe diameter. See
ues.
Page 148 SITRANS LR250 (HART) – INSTRUCTION MANUAL
Dimensions
on page 25 for installation guidelines.
sensor
reference
point
5 m
Low Cal.
Pt.
Options/
Values
LIQUID LOW DK
MED
M
LEVEL
5
0.5
FINISH
a)
0.990
HYBRID
a
5
Propagation Factor/Stillpipe Diameter
on page 14).
0.5 m
High
Cal.
Pt.
50 mm I.D.
Function
Medium =1 m/minute
meters
Level is reported as Volume
when a vessel shape is
selected.
5 m (16.5 ft)
0.5 m (1.64 ft)
Transfers Quick Start settings to
device.
P .F. for a 50 mm (1.96") I.D.
stillpipe
5 m (16.5 ft)
on page 149 for val-
7ML19985JE06
vent hole