User's Manual

Table Of Contents
Page 63 SITRANS LR 460 – INSTRUCTION MANUAL 7ML19985JM01
mmmmm
Parameters
2.3. Sensor Calibration
123
2.3.1. Sensor Units
Whatever units the sensor is measuring in.
2.3.2. Calibration Type
In "Dry" calibration, the user enters all four calibration values: High and Low Level
Points, and High and Low Calibration Points.
2.3.3. Low Calibration Pt.
Distance from Sensor Reference to Low Calibration Point (corresponding to Low
Level Point). Unit is defined in Sensor units. (In PDM, go to Device menu > Sensor
Calibration, then click on More Information, to see an illustration.)
2.3.4. High Calibration Pt.
Distance from Sensor Reference to HIgh Calibration Point (corresponding to High
Level Point). Unit is defined in Sensor units. (In PDM, go to Device menu > Sensor
Calibration, then click on More Information, to see an illustration.)
1.
Sensor Reference Point: the point to which all of the above parameters are refer-
enced, which is the flange face.
2.
Sensor Value: the value produced by the echo processing, which represents the dis-
tance from the Sensor Reference Point to the target.
3.
Level Value: the level measured in level units.
Values
0*
"Dry" calibration
1
"Wet" calibration (not recommended for SITRANS LR 460)
High Level Point
(default: 100%)
Sensor Reference Point
1
(flange face)
Sensor Value
2
Low Level Point
(default: 0%)
Level
3
Level Offset
Secondary Value 1
Low Calibration
Point
Sensor Offset
High
Calibration
Point
tank reference point