F
or this purpose
,
check which isotope is integrated in the source
container
.
Y
ou can
fi
nd this information on the type label of the source
container
.
T
hrough this selection
,
the sensitivity of the sensor is adapted perfectly
to the isotope
.
T
he normal reduction of the emitter activity is hence
considered through the radioactive decay
.
T
he
POINTRAC
31
requires this information of the automatic decay
compensation
.
T
his ensures an interference
-
free measurement over
the complete life time of the gamma emitter
-
an annual recalibration is
not necessary
.
E
nter the requested parameters via the appropriate keys
,
save your
settings with
[
OK
]
and jump to the next menu item with the
[
ESC
]
and
the
[-
>
]
key
.
E
nter here
,
the respective application
.
T
his menu item enables adaptation of the sensor to the requested
application
.
Y
ou can choose between the following applications
:
"
L
evel
"
,
"
P
oint level
"
or
"
S
ummation
S
lave
"
.
T
he natural radiation on earth in
fl
uences the accuracy of the
measurement
.
B
y means of this menu item
,
the natural background radiation can be
fi
ltered out
.
F
or this purpose
,
the
POINTRAC
31
measures the natural background
radiation and sets the pulse rate to zero
.
I
n future the pulse rate from this background radiation is automatically
deducted from the total pulse rate
.
T
his means
:
only the component of
the pulse rate originating from the source is displayed
.
T
he source container must be closed for this setting
.
S
etup
/
A
pplication
S
etup
/
B
ackground ra
-
diation
POINTRAC
31
•
F
oundation
F
ieldbus
25
6
S
et up with the indicating and adjustment module
41779
-
EN
-
120329
