Chapter 2 Operation
Mini-Switch LB 471
1
Reading in count rates is started with the „Cal.“ button.
Push „Clear“ to abort the count rate reading-in process.
While reading in the count rate, the remaining
averaging time appears on the display instead of
the code number. The averaged count rate is
displayed in the bottom row. You can change the
start time for averaging in code 37.
2
If the counting time is over, the average value is automatically
stored.
The new count rate has been determined and stored.
The process is automatically aborted after 1200 s at the latest.
2.2.1 Measurement Mode
In the regular measurement mode the measured value is displayed
in percent in code "10", or the count rate in cps in code 11.
If code 10 (11) is not displayed, push the Clear button (for 2 sec-
onds) to jump to the result display.
The reading in % may fluctuate significantly around 0% if the con-
tainer is empty, but it must not get close to the switching thresh-
old defined in code 18. To prevent this, the time constant in code
12 has to be big enough or the program has to be set to the au-
tomatic mode.
The reading in % allows you to check the measured values during
operation. If you get significantly different values, for example,
due to product caking, you may perform a re-calibration any time.
20 minutes after a button has been pushed for the last time, the
program automatically goes to code 10 or code 11, provided these
codes are not yet displayed. In code 15 you can define if code 10
or code 11 is the standard result display.
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