3. Getting Started LB 124 Scint
16
Please note: After each start-up, the device is in the same pro-
file it was in before being switched off. If required, select your
own profile from the profile menu. See chapter 6.9.
3.2 The First Control Measurement
Turn on the device by pressing the ON/OFF button. When
started the device first displays the software version and the
battery voltage and switches then to the ratemeter meas-
urement mode (cps) after start-up and can immediately be
used.
Slide the metal plate with the test source Sr-90 on the coun-
ter tube.
After a measuring period of approximately 10 seconds, read
the determined measured value and compare it to the value
indicated on the test source. Your measured value should
reach this value with a tolerance of +/- 10% after approx. 10
seconds.
3.3 Setting Basic Parameters
Before starting to measure, the most important parameters
have to be set and the factory-set parameters (alert thresholds,
background etc.) have to be modified according to your specific
requirements and conditions.
The following parameters should be checked or modified:
Define the Language. See chapter 6.8.1.
Enter the Date/Time. This is important for your documenta-
tion. Each measurement stored is provided with the respec-
tive date and time. See chapter 6.8.2.
Define the parameters for the individual measurement
modes and measuring channels on the menu Measure-
ment Parameters. See chapter 6.4.
If required, define the Calibration Factors for additional
nuclides or nuclide compounds (use the positions B-1 and
B-2) and define nuclide-specific alert thresholds, if required.
See chapter 6.6. The calibration factors can be changed in
the Expert profile; therefore, select this profile (chapter 6.9).
Select nuclides for measurements. In order to be able to
select the nuclides required for a current measurement di-
rectly, you should pre-select the respective nuclides for the
small nuclide table of the Measurement Menu. See chapter
6.6.
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