Figure 9-8.--ABC-M11 portable decontaminating apparatus.
only four detectors the may must be shifted when the
wind direction shifts greater than 20 degrees.
Figure 9-7, view C, shows a company in a defensive
position with six detectors deployed. The actual number
of alarm systems per unit varies depending upon the
table of allowance (TOA). The 300-meter distance
between the M43 detectors reduces the possibility that
agent clouds might drift through holes in the array. This
array provides a high probability of detecting an
off-target attack within a reasonable warning time.
Figure 9-7.--Dep1oyment of automatic chemical agent alarms.
NOTE
Remember that the detector is oriented on
Figure 9-7, view A, shows a situation where four
wind direction, NOT on the direction of the
detectors are emplaced with three platoons online. Note
enemy.
the orientation on the wind direction. The detector is
oriented on wind direction, not on the direction of the
enemy. When the automatic chemical agent alarms are
IM-143/PD or IM-143A/PD Dosimeter
mounted on vehicles, consideration must be given to
wind direction for the protection of the main body.
This is the standard tactical dosimeter in use today.
It is a direct reading instrument capable of detecting and
Figure 9-7, view B, shows an array using four
recording a total dose of up to 600 rads. It is termed a
detectors with the wind direction coming from the right
pocket dosimeter and is about the size and shape of a
flank of the unit. A significant difference between a
fountain pen.
four-detector may and a six-detector array is that with
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