R
Pulse Rate Measurement
In the “pulse rate” measuring mode, the pulses registered by the counting tube are continuously
measured and converted into a pulse rate. The unit of this pulse rate is cps (counts per second).
Note: What is being calculated is the rate of ionization per second recorded in the counter tube.
This is not identical to the activity of the isotope, which is defined in Becquerel.
Displaying the Pulse Rate
Press the button to switch to the pulse rate measu-
ring mode. The symbol will flash during measurement.
After measuring, the symbol becomes steady again.
Pulse rate measurement gives the average number of
pulses per second. Since radiation intensity may strongly
fluctuate extensively over a brief period, this average will,
of course, be more exact over a longer measurement
period.
GAMMA-SCOUT
®
provides you with a first result within a
few seconds. Then it automatically prolongs the measu-
ring time to a maximum of 4096 seconds in order to
reach as precise an average figure as possible.
For example, 1024 pulses after 4096 seconds = 0.25
pulses / second. After pressing the button, the measu-
ring intervals always start again after 2 seconds.
Note: Pressing the button displays the number of
measured impulses (i.e. ionized molecules) per second.
Of course, this is not the activity of the source (Becquerel).
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Summary of Contents for ALERT
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