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2.4 Instrument Design
The instrument is a monoblock, which encloses two independent modules:
- gamma-radiation detector module (Radiation Detector Module) containing a Geiger-
Mueller counter;
- chemical warfare detector module (CWA Module) including an ionizing chamber with
Ni-63 beta source, and a micro pump.
The unit contains also appropriate electronics (with a nonvolatile memory) that controls over the
unit operation and stores the operation history.
The instrument (Figure 2.1) has two control buttons (7 and 8) and a rotating head (2) that allows
the operator to change the operating modes of the CWA Module.
The analyzed air enters the unit via the inlet (1) and exits it via the outlet (11).
The display (6) together with two color LEDs bars (3 and 3'), along with the audible alert device
(4) provides all relevant data to the operator.
The infra-red (IR) port (5) enables the data exchange between the unit and PC.
The lid (10) closes the battery compartment.
The instrument can be operated using AC adapter or DC power supply connected with the port
(9). In its turn, PM2012MB can be also operated using the USB cable.
Figure 2.1 – The PM2012M/PM2012MA
1
vapor inlet,
2
rotating head,
3
yellow LEDs bar,
3’
red LEDs bar ,
4
audible alert device,
5
IR port,
6
OLED/LCD display,
7 “
SET” button,
8
“MODE” button
9
AC adapter and DC power supply port, USB cable
10
battery compartment lid,
11
vapor outlet
1
2
3
3
4
5
6
7
10
11
8
9
