Chapter 2. FUNCTIONING OF EQUIPMENT

TM 3-6665-302-34

CHAPTER 2

FUNCTIONING OF EQUIPMENT

M43 DETECTOR UNIT

Section I.

Solution is pumped from the solution reservoir

2-1. Pneumatic System Operation

assembly back into the detector cell.

Air is drawn into the M43 detector unit through

2-2. Electrical Operation

the case top at the air inlet port and passes into

the detector cell. Solution is pumped from the

a. The detector cell (1A2A2A3V1) detects

reservoir assembly by the pump assembly into

very low concentrations of chemical agents in

the detector cell to form an air-solution mix-

the forms of vapor or inhalable aerosols. Chemi-

ture. The air-solution mixture is drawn from

cal agents increase the electrical output of the

the detector cell into the solution reservoir as-

detector cell. This triggers the electronic module

sembly where the air and solution are separated.

assembly (1A2A4 ) causing the horn (1A2A5A2)

Air is pumped from the solution reservoir as-

to sound. At the same time, voltage is removed

sembly and exhausted through the air outlet port.

MU397901

Figure 2-1. M43 detector unit pneumatic system block

diagram

2-1