BERTHOLD TECHNOLOGIES LB 480, User Manual

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SENSseries LB 480 Level measurement
BERTHOLD TECHNOLOGIES GmbH & Co. KG
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Volume 3 Menu Structure
3
2.10
Quick Start, Step 3
This menu allows you to determine the calibration date and then
calibrate the instrument. If you calibrate, these data are transferred
to the "Measurement Data" menu and thus activated for the mea-
surement.
1 Read In
Start reading-in the count rates. While the count rate is read in, the
average is calculated and displayed continuously. You define the
reading-in period under
ReadIn Time ( "Quick Start, Step 2 " ).

First choose which calibration point you want to read in:
• BACKGROUND
First you have to measure the background, so that the detector
can correctly compensate for the decay of the radiation source.
Before taking measurements, make sure you do not measure
any radiation from the radiation source
The easiest way to ensure this is if the source is not yet
mounted. Otherwise, close the beam path and fill the container
in addition.
• Cal Point 0%
For this measurement, the level in the tank must be below the
measuring range or the tank must be completely empty. While
you read-in, the level must not rise above 0% and the condi-
tions within the tank must match the conditions during opera-
tion as far as possible.
If appropriate for your application and if it affects the beam
path, this applies, for example, to:
–
Gas density
– Agitator
– Cooling/Heating jacket
• Cal Point 100%
For the measurement, the level in the tank must be above the
monitoring level or the tank must be completely filled. While
you read-in, the level must not drop below 100% and the con-
ditions within the tank must as far as possible match the condi-
tions during operation. If appropriate for your application and if
it affects the beam path, this applies, for example, to:
–
Gas density
– Agitator
– Cooling/Heating jacket
When reading-in the count rates, the time remaining up to the end
of the operation is displayed. Finally, you are prompted to confirm
the detected count rate with
OK . To shorten the read-in process,
you can stop any time by pressing OK .