Chapter 1 General Information
Mini-Switch LB 471
Case (7 TE) into which the evaluation unit LB 4710 is installed,
so it can be used in any 19" rack
Count rate with empty container
Some parameters can either be set to the automatic or manual
mode. For the manual mode you have to enter a fixed value in
the respective parameters.
Type of radiation source: Cobalt-60 (Co-60) or Cesium-137
(Cs-137) for level measurements.
Count rate caused by natural environmental radiation.
A value stored under a certain code.
Time after which an automatic reset is performed.
Count rate with full container.
Value of counts relative to one second.
Count rate unit: Counts per second.
A process that is started by the user in order to determine the
average value of the count rate at the respective level. This
count rate is needed to calibrate the measurement. The count
rate is averaged over a certain time (standard 60 s) to exclude
statistical and process-immanent fluctuations.
All parameters have been preset by the manufacturer using
standard values. In most cases this simplifies calibration of the
instrument significantly. Despite factory setting, calibration al-
ways has to be performed.
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