Appendix E: Application Examples; Liquid Resin In Storage Vessel, Level Measurement - Siemens LR250 Instruction Manual

Appendix E: Application Examples

Note: In the applications illustrated below, values are for example purposes only.
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 to apply changes in the last
step.)
In each example, after performing a Quick Start, navigate to the other required parameters
either via the handheld programmer, or using a Device Management tool (SIMATIC PDM or
AMS Device Manager) and enter the appropriate values.

Liquid resin in storage vessel, level measurement

Note: Minimum distance from flange face to target is limited by Near Range (2.8.1.).
sensor
reference
0.5 m
point
High
Cal
Point
5 m
Low Cal
Point
Parameter
Parameter No. /Name
type
Material
Response Rate
Units
Operation
Quick Start
Low Calibration Point
Wizard
High Calibration Point
parameters
Wizard Complete
LOE Timer (2.5.2.)
Independent
Material Level (2.5.1.)
parameters
Return to Measurement: press Mode
Page 146 SITRANS LR250 (HART) – INSTRUCTION MANUAL
To obtain level measurement/4 to 20 mA output
proportional to resin levels:
100% Level
Low Calibration Pt. = 5 m (16.5 ft) from sensor
High Calibration Pt.= 0.5 m (1.64 ft) from sensor
Max.fill/empty rate = 0.2 m/min (0.65 ft/min)
In the event of a loss of echo:
SITRANS LR250 is to go into Fail-safe High after 2
0% Level
minutes.
to start normal operation.
reference point
reference point
Options/
Function
Values
LIQUID
MED Medium =1 m/minute
M meters
LEVEL Level
5 5 m (16.5 ft)
0.5 0.5 m (1.64 ft)
Transfers Quick Start
FINISH
settings to device.
2 2 minutes
HI Fail-safe level set to High
7ML19985JE06