FIELD EXPEDIENT FOR CHARGING RADIACMETERS IM-93/UD AND IM-147/PD

TB SIG 226-9

DEPARTMENT

THE

ARMY

TECHNICAL

BULLETIN

FIELD EXPEDIENT FOR CHARGING RADIACMETERS

IM-93/UD AND IM-147/PD

8 October 1958

Headquarters, Department of the Army, Washington 25, D. C.

cations Agencv, Fort Monrnouth, N. J.

1. Scope. a. This bulletin contains instructions

for making and using a field emergency dosimeter

2. Purpose and Use. Normally, Radiacmeters

charger (fig. 1) for Radiacmeters IM-93/UD and

IM-93/UD and IM-147/PD aec charged by using

IM-147/PD (usually called dosimeters).

Radiac Detector Chargers PP-630A/PD and

Caution: Improper use of this dosimeter

PP-1578/PD. However, if the proper charger is

charger may permanently damage the dosimeter.

not on hand, an emergency charger may be made,

Read and follow these instructions carefully.

thereby keeping in operation a vital warning

b. Forward comments on this publication to

device.

Commanding Officer, United States Army Publi-

Figure 1. Field emergency dosimeter charger.

4. Fabrication. a. File down the ball of Plug

3. Materials and Tools Required.

PL-55 as shown in figure 2. After the ball has

Dry Battery BA-51 (two).

Plug PL-55 or equivalent.

been filed flat, punch a dimple in the center of

the flat surface with a center punch. The dimple

Resistor (any value between 1 and 10 meg-

should be suitable to accept the charging pin of

ohms).

the dosimeter.

Suitable wire (stranded or solid hookup wire,

b. Tape two Batteries BA-51 together. Wire

field wire, lamp cord, etc.).

File.

the plug, the current-limiting resistor, and the

two series-connected batteries as shown in figure

Center punch and hammer.

Tape.

3. If Batteries BA-51 are not available, any com-