KROHNE optiplex 1300 c, Handbook

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Handbook OPTIFLEX 1300 C
71 OPTIFLEX 1300 C
The diagram below shows what the user would see if the return signals were displayed on an oscilloscope.
The interface threshold function is active from the flange return signal and is used to ignore interference
signals.
1 initial pulse
2 flange reflection
3 level reflection
4 interface reflection
5 interface threshold
6 distance not dielectric constant dependant
7 distance dependant on dielectric constant of
top liquid
8 level threshold
Probe end threshold
function C.1.18.0
This function is used for applications where the product measured has a low dielectric constant. Products
with low dielectric constants must sometimes be measured using tank bottom following mode, using the
probe end as a reference. In some cases the return signal may be so weak that manual adjustment on the
probe end threshold is necessary to ignore interference signals.
The diagram below shows what the user would see if the return signals were displayed on an oscilloscope.
The probe end threshold function is active from the flange return signal.
1 Initial pulse
2 Flange reflection
3 Probe end reflection
4 Probe end threshold
On-site device calibration
Linearization table
function C.1.22.0
For on-site calibration.
Linearization procedure
1. Fill the tank to any given level.
2. Go to the linearization table menu item via advanced setup > installation. The level reading will be
displayed with the possibility to enter a different value
3. Make an appropriate reference measurement.
4. Type in the corrected value and confirm
5. Repeat procedure (50 points maximum).