BERTHOLD TECHNOLOGIES LB 480, User Manual, Page: 323 / 450

SENSseries LB 480 Level measurement
BERTHOLD TECHNOLOGIES GmbH & Co. KG
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Volume 3 Menu Structure
3
2.12
Date & Time
Menu path: Device Config

Setup

Sensor Configuration

Date & Time .
The correct date is important for the automatic decay compensation
of the isotope. Since the activity of the source diminishes with time,
the calibration count rates will be compensated automatically in the
Meas Data menu through the date. The decay compensation takes
place daily at 09:01 h. A capacitor ensures that the date and time
continue to run for about a month even when the detector is turned
off and even if the power supply is switched off. If the detector has
not been supplied with power for a longer period of time (several
weeks), then the capacitor may be empty. If the power supply is
switched on again, then the clock starts with the last saved date and
an error message "Real time clock not valid" indicates that the date
must be updated.
1 Date
Current date. The date is specified in the following format:
MM/DD/YYYY.
If the detector detects that the date deviates, a date error is indi-
cated. The response of the signal output is dependent on the setting
for
Error Handling ( Signal Parameter , page 3-329 ):
• NORMAL
The measurement continues with the last saved date.
• SENSITIVE
The measurement goes to the safe condition and the current
output goes to fault current.
2 Time
Current time. The time is specified in the following format:
hh:mm:ss
Differences in time have virtually no effect on the correction of the
decrease in activity. However, the correct time is helpful to check
the detector function: If an error occurs, you can see in the error
log (
Device Config

Diagnostic

Log , page 3-387 ) when
exactly the error occurred.
3 Active Detector No.

Choose the detector for which you want to display the current
values in this window.
• Detector No. = 0 shows the date and time of the master
detector.
• Detector No . = 1 shows the date and time of slave 1.
• Detector No. = 2 shows the date and time of slave 2.
• etc.