Siemens SITRANS LR250 Compact Operating Instructions page 47

Operation
Operation
NO SERVICE
LEVEL
SPACE
DISTANCE
See Material Level (2.5.1.) for more detail.
a)
①
②
③
The point from which High and Low Calibration points are referenced: see Dimension
a)
drawings.
Low Calibration Point
Distance from Sensor Reference to Low Calibration Point: usually process empty level. (See
Operation for an illustration.)
Values
LR250 (mA/HART)
Compact Operating Instructions, 06/2018, A5E33469191-AB
Description
Measurement and associated loop current are not updated, and the device
defaults to Fail-safe mode
* Distance to material surface referenced from Low Calibration Point
Distance to material surface referenced from High Calibration Point
Distance to material surface referenced from Sensor reference point
3
1
2
④
Space
⑤
Level
⑥
Distance
Range: 0.00 to 20.00 m
.
a)
5
4
6
High Calibration Point (process full level)
Sensor reference point
Low Calibration Point (process empty level)
Commissioning
6.2 Programming SITRANS LR250
a)
45