SENSseries LB 480 Level measurement
BERTHOLD TECHNOLOGIES GmbH & Co. KG
3 – 331
Volume 3
Menu Structure
3
2.18
Signal Dependency
Menu path:
Device Config
Setup
Signal Condition
Signal
Dependency
.
Use this menu, for example, to detect external radiation from weld
inspections, or short-term use of other sources in the vicinity of the
detector.
If the current count rate exceeds the threshold set in
Io Factor
or
in
RI Sigma
, the interference radiation warning will be issued. In
this case:
–
the measured value is frozen and
–
the current output holds the last measured value
The measurement remains frozen as long as the external radiation
is present, plus the waiting time that has been set in Waiting Time.
To get the warning messages, you have to evaluate the messages
via the HART
®
signal or the digital output.
IMPORTANT
If interference radiation detection is enabled, the measured values
are output with a delay. The delay is adjustable from 0 to 5 sec-
onds.
The delay is required so that at the moment of detection the mea-
sured value remains unaffected, even though in this case,
increased count rates are already present. For this reason, while
interference radiation detection is active, no applications can be
run where the reaction time must be below the set delay.
For detailed information please refer to the section Interference
Radiation Detection (
1 Response Mode
Additional parameters are displayed, depending on which function
you select.
Select the detection mode:
• DISABLED
Interference radiation detection and Rapid switchover are dis-
abled.
• RAD. INTERFERENCE
Interference radiation detection is enabled.
For detailed information please refer to the section Interference
Radiation Detection (
• RAPID SWITCH
Rapid switchover is enabled.
The use of the function
RAPID SWITCH
is recommended only
for special applications where the output signal has to adapt
rapidly to the new value, e.g. for measurements on small con-
tainers and if sudden level changes occur.
Содержание LB 480
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