19
2)
follow the instructions displayed on the SPECTROSCOPIC RADIATION MONITOR
РМ1403’s LCD, see Figure 6.2 (1). Open the γ- filter, see Figure 6.5 (А) and place BDAB on the
surface being tested so that the detector window faces the surface;
Attention! Handle the detector window of the
-
-radiation detector with care (don’t
damage it) when doing measurements with
- filter removed.
3)
press OK;
4)
Spectroscopic Radiation Monitor РМ1403’s LCD will indicate a count rate value
specified by common
-
-
- radiation during measurement of
-radiation flux density – "Alfa +
Beta + Gamma" in cps, Figure 6.6 (2). Statistical error of average count rate value is displayed in
percents with 0.95 probability under indicated measurement units on Spectroscopic Radiation
Monitor РМ1403’S LCD (to the right). Read the measured value when the statistical error is 10 % or
less. The lower the statistical error is, the more accurate the measurement data are;
5)
leave BDAB on the tested surface. When statistical error is 10 % or less, press the MENU
key on Spectroscopic Radiation Monitor РМ1403. The lower the statistical error is, the more accurate
the measurement data are;
6)
select "Next Step" menu item, Figure 6.6 (3). Press SELECT key on Spectroscopic
Radiation Monitor РМ1403. When statistical error exceeds 10 %, the Spectroscopic Radiation
Monitor РМ1403’S LCD will display a corresponding message, Figure 6.6 (4). If current
measurement error is sufficient, then select "Yes" option in the message and press “SELECT” key on
Spectroscopic Radiation Monitor РМ1403;
7)
following the instructions displayed by Spectroscopic Radiation Monitor РМ1403’S LCD,
Figure 6.6 (5), mount the
- filter on BDAB, and place BDAB on the tested surface in the same way
as before
- filter installation;
8)
press OK;
9)
Spectroscopic Radiation Monitor РМ1403’s LCD will indicate continuously measured
flux density values of
- radiation в min
-1
/cm
2
, Figure 6.6 (6). The user can read the measured value
of
- radiation flux density when the statistical error is 10 % or less.
The level of measured
- radiation flux density is displayed graphically on the analogue scale
as well. Quantity of the lighting scale segments corresponds to the value of measured
- radiation
flux density relative to the set threshold level.
When set threshold of flux density is exceeded, the instrument will emit sound (and) or light
signals. At that the analogue scale displayed on the Spectroscopic Radiation Monitor РМ1403’S LCD
will be filled completely. Signals are emitted all the time when the measured flux density value
exceeds a set threshold. Press any Spectroscopic Radiation Monitor РМ1403 key to switch off
alarming.