Siemens Sitrans LR 460 Instruction Manual page 64

2. Level Calibration is a linear transfer function that converts a sensor value to a level
value. The level value is used for volume calculation, if that function is enabled.
High Level Point
Level Value
Low Level Point
(distance 1 or 2)
SV2 or SV3
High Level Point
(default: 100%)
Low Level Point
(default: 0%)
3. Then linearization can be carried out to accommodate complex tank shapes, or to
provide level to volume conversion.
4. The LTB provides four possible outputs
• Primary Value (PV) / Level or Volume
• Secondary Value 1 (SV1) / Level
• Secondary Value 2 (SV2) / Distance1 (sensor units)
or
• Secondary Value 3 (SV3) / Distance 2 (any level units, except %)
1.
Level Offset (default O) can compensate for specific tank configurations.
Page 54
Level
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Low Calibration Point Sensor Value
Sensor Value
Level
1
Level Offset
SITRANS LR 460 – INSTRUCTION MANUAL
Calibration
High Calibration Point
Sensor Reference
Point (flange face)
Sensor Offset
High
Calibration
Point
Low Calibration Point
Secondary Value 1
1
7ML19985JM01