Chapter 3 Parameters
Mini-Switch LB 471
Source replacement
Read off or enter year for source replacement
(Only in the professional mode)
If the current date in code 01 reaches the year set here, the warn-
ing message "39.01" (Replace source) will be output.
The automatic calculation of the date is dependent on the maxi-
mum time constant in code 14 and the current time constant in
code 12.
A manually entered date value disables the automatic calculation.
If four bars are displayed in this code, then you have to push Clear
to reset the value before you enter a date.
Evaluation unit electronics temperature (°C)
Show current EVU temperature
(Only in the professional mode)
The board of the evaluation unit accommodates a temperature
sensor.
An error message is output if this temperature exceeds the limits
set in code 48.
Test pulse generator
Simulate detector count rate
(Only in the professional mode)
Enter the full or empty count rate to simulate the respective con-
tainer level and to switch the alarm relay.
With the test pulse generator enabled:
the device acts as if the count rate were coming from the de-
tector.
the counts coming from the detector will be ignored.
the error relay is enabled to indicate that the readings do no
longer correspond to the level any more.
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