User's Manual

Table Of Contents
Page 54 SITRANS LR 460 – INSTRUCTION MANUAL 7ML19985JM01
mmmmm
Profi;e structure
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.
1
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.
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Low Calibration Point Sensor Value High Calibration Point
Level
High Level Point
Low Level Point
Calibration
Level Value
High Level Point
(default: 100%)
Sensor Reference
Point (flange face)
Sensor Value
Low Level Point
(default: 0%)
Level
Level Offset
1
Secondary Value 1
Low Calibration Point
Sensor Offset
High
Calibration
Point
(distance 1 or 2)
SV2 or SV3