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The sequent push of the “MODE” button switches between the following instrument’s modes:
-
Dose equivalent rate measurement of gamma and X-ray radiation;
-
Dose equivalent measurement of gamma and X-ray radiation;
-
PC and smartphone (only for PM2012MB) communication mode;
-
Clock-Calendar mode.
The sequent push of the “SET” button switches between the following instrument’s submodes,
which were chosen by the “MODE” button:
-
Dose equivalent rate measurement of gamma and X-ray radiation preset dose
equivalent rate threshold value;
-
Dose equivalent measurement of gamma and X-ray radiation dose equivalent time
accumulation preset dose equivalent threshold value;
-
IR-connection is turned on IR-connection is switched off for PM2012M,
PM2012MA, Bluetooth-connection is turned on Bluetooth-connection is turned off
for PM2012MB;
-
Time indication mode Calendar indication mode.
2.5 Principles of Operation
The Radiation Detector module continuously measures the ambient dose equivalent rate
( )
10
*
•
Η
and the ambient dose equivalent
Н*(10) of gamma- and X-ray radiation and the dose
accumulation time.
If the preset thresholds of the dose rate or/and the dose are exceeded the unit produces audible
and visual alarms (on display).
When the CWA Module is activated, the ambient air is pumped through an ionizing chamber by
a micropump, and CWA vapors in air are monitored. To separate two types of CWA
(organophosphorus compounds and arsenic-containing compound) the polarity of voltage signals
is determined.
If the preset level of organophosphorus compounds (sarin, soman, V-gases) is exceeded, the
instrument produces an audible signal and displays a visual signal on the yellow LEDs bar.
If the preset level of arsenic-containing compound (lewisite) is exceeded, the instrument
produces an audible signal and displays a visual signal on the red LEDs bar.
The operation history is saved in the non-volatile memory of the unit and can be transferred to a
PC by infrared link for data viewing and programming.
