4.
Other Commands for Controlling the ALPHAiX 3000
PERIOD
key
The PERIOD key is used to program the measuring intervals.The currently set
measuring time appears if PERIOD is pressed immediately after switching on.
This measuring time display flashes if the SET key is depressed at the same
time.The measuring time setting can be changed with the
↑
/
↓
keys in this
phase. After the required measuring time is set, the SET key is depressed
again until the time is displayed. The measuring range selection mode is then
exited and other functions can be used.
If the PERIOD key is depressed during a measurement
-
the measuring time already elapsed is displayed first
-
on the 2nd press the total measuring time previously set is displayed
-
on the 3rd press the unit returns to display the current measuring
value.
The measured value is always shown in the display at the end of a series of
measurements.
No total measuring time display is given when measuring
µ
Sv/h because the
measuring time is a variable in this measuring method - i.e. sometimes
shorter, sometimes longer depending on the impulse density.
STORE
key
Display of the average (mean value) from all stored (max. 43) measured
values ( /0). This value (total measuring time should be at least 100 minutes)
can be used as background rate if no other radiation exposure is present.
After depression of STORE, pages of the stored values can be turned with the
↑
/
↓
keys, starting with the display of the date, time, background counts
setting and measuring time.
Reading the memory is, however, only possible if no measurement series is in
progress - i.e. the measurement series must first be interrupted with STOP or
the memory must be made accessible with STORE immediately after switching
on.
The measured values are numbered consecutively with the oldest value as No.
1 and the latest measured value as No. 40.
SOUND
key
The SOUND key allows to switch on/off the audible impulse signal in the
IMPULSE mode. With this key the alarm can also be switched off.
Simultaneous depression of the SOUND and SET key permits setting of the
zero rate, ie. adjusting - with
↑
/
↓
keys - the background count.
For dose rate measurements in
µ
Sv it is important to first program the correct
zero rate. A zero rate of 20 IPM/m is set as a factory default - which
corresponds to the zero rate for the counter tube type A.
The zero rate for counter tube type B is
8 IMP/m
The zero rate for counter tube type FSZ is
17 IMP/m
The zero rate for counter tube type G is
28 IMP/m
OPERATING INSTRUCTIONS
ALPHAiX 3000
JS Friday 22 April 2011 Page 5 of 7