Operating Instructions

Table Of Contents
To obtain level measurement/4 to 20 mA output proportional to resin levels:
Low Calibration Pt. = 5 m (16.5 ft) from sensor reference point
High Calibration Pt.= 0.5 m (1.64 ft) from sensor reference point
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 minutes.
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Sensor reference point 5 m
High calibration point Low calibration point
0.5 m 0% level
100% level
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
Low Calibration Point 5 5 m (16.5 ft)
High Calibration Point 0.5 0.5 m (1.64 ft)
Wizard Complete FINISH Transfers Quick Start settings to de‐
vice.
Independent pa‐
rameters
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.
Commissioning
6.3 Application examples
SITRANS LR250 with mA/HART
58 Operating Instructions, 10/2019, A5E32220602-AG