Page 124 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL 7ML19985JF02
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E: Special Applications
Appendix E: Application Examples
You can use these examples as setup references. Enter the values in the parameter tables to
select the corresponding functions.
Configure the basic settings using the Quick Start wizard parameters. (These parameters are
inter-related, and changes take effect only after you select YES in step 7 to apply changes.)
In each example, after performing a Quick Start, navigate to the other required parameters
(either via the handheld programmer, or via SIMATIC PDM) and enter the appropriate values.
Liquid resin in storage vessel, level measurement
Press Mode to return to Measurement mode.
Note: In the applications illustrated below, values are for example purposes only.
Note: Minimum distance from flange face to target is limited by Near Range (2.2.3.5.1.).
Parameter
type
Parameter Name/No.
Options/
Values
Function
Quick Start
Wizard
parameters
Material (1.1.) LIQUID
Response Rate (1.2.) MED Medium =1 m/minute
Units (1.3.) M meters
Operation (1.4.) LEVEL Level
Low Calibration Point (1.5.) 5 5 m
High Calibration Point (1.6.) 0.5 0.5 m
Apply? (Apply changes) (1.7.) YES
Transfers Quick Start settings to
device.
Independent
parameters
LOE Timer (2.4.1.) 2 2 minutes
Fail-safe Mode FB1 (2.4.2.)
Substitute
value
User-defined value to be used.
Fail-safe Value FB1 (2.4.3.) 4.5 4.5 m
To obtain level measurement proportional to
resin levels:
Low Calibration Pt. = vessel bottom
High Calibration Pt.= 0.5 m from sensor
reference point.
Max.fill/empty rate = 0.2 m/min.
In the event of a loss of echo:
SITRANS LR250 is to report a user-defined
value of 4.5 m after 2 minutes.
0.5 m
Low Cal
Point
5 m
100% Level
0% Level
High
Cal
Point
Sensor
reference
point
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