Geiger counter Handheld w/ built-in tube 513545
2020-02-27 / MRA
Product manual
AC513545
p.
3/4
Dansk
manual:
Se p. 1
QUICK GUIDE
Power on:
Press ON to power on the instrument.
The display briefly shows a version number and
the GM voltage. Immediately after the counter has
been turned on, the counting period is 1 s
–
CPS
is
indicated on the display.
Other views:
From CPS press
once to select
µSv/h
relative to Cs-137.
Press
once more to select the mean value of
counts per second
–
Mean CPS
.
Other counting periods:
Press
or
until
Pulse
is highlighted in the display. The instrument now
counts for a selectable period, starting with 10 s.
Press HOLD
HOLD and set the measurement
period with
and
.
The unit is seconds. The symbol “
---
“means
indefinite counting.
Select with
CAL
/ cancel with
HOLD
.
Setting the GM voltage:
Press
CAL
and adjust the
voltage with
and
. Select with
CAL
.
Counting rate (
CPS
) is shown in the secondary
display during the adjustment.
This setting returns to the default value when the
instrument is turned on.
•
8 fixed count periods (1, 10, 20, 30, 40, 50,
60 or 100 s)
•
Display of dose rate (µSv/h) related to Cs-
137
•
GM tube voltage can be adjusted between
400 V and 700 V while showing count rate.
•
Max, Min and average view for µSv/h and
CPS.
Description
The GM tube
The Geiger tube is provided with a cap to protect
the sensible window. When working with gamma
radiation, the cap may remain in place. Remove
the cap when alpha or beta radiation is involved.
NOTE:
Although the GM tube itself is protected by
a plastic housing, the tube itself is relatively fragile
in its construction. Particular attention should be
paid to the radiation stop of the sensor when the
cap is removed in connection with Alpha and Beta
measurements. Therefore, do not drop or squeeze
the instrument or touch / strike the radiation
peak.
If the accident is out as described above, the pipe
will typically crack. However, it is possible to have
the tube replaced - A service assignment we can
offer at an agreed price.
Time
The counting period 1 s is achieved by selecting
CPS
(counts per second). All other periods,
including infinity is obtained with the
Pulse
setting, When the instrument has been turned off,
the measurement period for
Pulse
is 10 s.
To change the period, press
HOLD
HOLD
and
set the measurement period with
and
.
The unit is seconds. The symbol “
---
“means infinite
counting.
Select with
CAL
/ cancel with
HOLD
.
During Pulse measurements, the progress of each
measurement can be followed on the % scale at
the top
