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4 Quick Guide to Calibration Volume 3
Step 3 - Calibration Points
At the CrystalSENS you can skip the following item Background,
unless the measurement is safety-relevant.
Background
The source shielding is not mounted at the measuring point, but at
least it is adequately shielded (see
chapter 7.1 , page 3-411 ).

Select ReadIn BACKGROUND and wait until the measure-
ment time is over.
Empty calibration
Source is mounted and beam path open (see chapter 7.2 , page 3-
413 ). The tank is empty or the level below the limit value.

Select ReadIn Cal Point 0% and wait until the measurement
time is over.
Full Calibration
The beam path of the shielding is closed, or better, the tank is full.

Select ReadIn Cal Point 100% and wait until the measure-
ment time is over.
Calibration

Select Cal Preset .
The message 0-OK must be displayed, otherwise correct the cali-
bration error as per the error message and reselect Cal
Preset .
On the following pages you can find detailed calibration instructions.
Tip
Always carry out a test calculation after every calibration. This will
ensure that your calibration data are plausible and the detector is
set correctly (see
chapter 2.39 , page 3-366 , Cps Average Mode
and Cps Average Test ).