Initial Procedures

2-2. Initial Procedures

The reading should be 6000 + 1200 CPM if the

equipment is operating properly.

Perform the procedures below to place the

b. Operator Check for X-Ray Probe.

radiacmeter into operation:

(1) Follow procedures in paragraph 2-2.a,

then set selector switch to OFF.

CAUTION

(2) Disconnect the coil cord cable from the

Protect the main probe, aux probe and

main probe and connect to the x-ray probe (Figure

x-ray probe window areas from sharp

2-3).

objects which could damage the light

(3) Detach the probe handle from the main

barrier. The light barrier is very thin and

probe and attach to the x-ray probe (Figure 2-3).

easily punctured which will cause the

(4) Set the selector switch to the 10K posi-

equipment to become inoperative. Keep

tion and center the x-ray probe window as close

the main and auxiliary probe window

as possible over the check source on the bottom

covers (Figure 1-2) in place when the

of the radiacmeter (Figure 2-4).

radiacmeter is not in use.

(5) Read the indicating meter when the

check source and the main probe are in contact.

Operator Check for Main Probe.

The reading should be between 4,000 and 10,000

(1) Open the storage case and remove the

counts per minute.

radiacmeter and main probe from their storage

position. Set the radiacmeter with main probe

2-3. Monitoring Terrain, Supplies, and

attached, upright on a flat surface.

Equipment.

(2) Loosen the two battery compartment

a. General. The main (or aux probe) and the

cover screws (Figure 2-1) and remove the battery

x-ray probe are used to monitor terrain, supplies,

compartment cover.

or equipment. Remember that the window areas

( 3 ) install two BA-30 batteries into the

of each type probe are fragile and can be punc-

radiacmeter. Follow the plus and minus marking

tured or damaged easily.

o n the case for the proper battery position.

b. Procedures for Using the Main Probe (or

Reinstall the battery compartment cover.

Aux Probe). Adjust the radiacmeter and use the

(4) Set the selector switch to the BATT

procedure below for monitoring large open areas.

position and check the batteries.

In areas where space is limited, use the aux probe

(5) Loosen the probe handle retaining nut

(Paragraph 2-4).

(Figure 2-1) and separate the main probe from the

(1) Place the radiacmeter into operation by

radiacmeter. Remove the main probe window

performing the procedures in Paragragh 2-2,

cover.

above.

(6) Set the selector switch to the 10K posi-

(2) Determine the best configuration for

tion and place the main probe window area over

use and connect equipment as outlined below:

the check source (Figure 2-2) on the bottom of the

(a) Main Probe Attached. R a d i a c -

radiacmeter. Fit the main probe and radiacmeter

meter can be used with the main probe attached

at a right angle to get as close as possible to the

to the radiacmeter (Figure 1-1).

check source.

(b) Main Probe Detached. Remove the

WARNING

main probe from the radiacmeter by loosening the

main probe handle retaining nut and separating

The check source used in this equip-

the two units. Attach the carrying strap to the

ment contains Thorium (a radioactive

radiacmeter case and place the carrying strap

metal). Thorium is a hazardous material.

around your neck or on your shoulder to aid in

Injury or disease may result if the check

carrying.

source is not handled properly. Use ex-

(c) Main Probe Extended. Connect the

treme care not to touch, scratch, break,

handle extension (Figure 1-1) to the main probe by

or remove the surface of the check

removing the handle from the main probe body

source while handling them. See the

and inserting the handle extension between the

front of this technical manual for first

two.

aid procedures.

(3) Set the selector switch to the 1K posi-

tion and proceed with monitoring while watching

(7) Read the indicating meter when the

the indicating meter.

check source and the main probe are in contact.

Change 2

2-2