SAFETY, CARE AND HANDLING - TM-11-6665-230-120012

TM 11-6665-230-12

b. Performance Data.

1. Type of radiation detection: Detects gamma radiation alone or gamma and beta radiation

together.

2. Types of indication: Meter readings (visual) and audible checks.

NOTE

For scientific and technical reasons, nuclear radiations are measured in 2

varieties of units, to include the "roentgen" (r), "roentgen equivalent physical"

(rep), "radiation absorbed dose" (rad), and "centigray" (cGy). For practical

military use, all types of radiation are measured in centigray. This unit of

measurement is used interchangeably with, and in Iiew of, other units previously

mentioned.

3. Sensitivity ranges: Four sensitivity ranges: 0.5, 5, 5.0, and 500 milliroentgens per hour

(mR/hr)(5 uGy(mrad)/hr)(50 uGy(mrad)/hr)(500 uGY(mrad)/hr)(5000 uGY(mrad)/hr)

4. Power requirements: Six BA-30, 1.5-volt dry cell batteries.

5. Characteristics: Portable, battery-operated, individually carried and capable of close range

detection of weak radiation.

1-13. SAFETY, CARE AND HANDLING

The test sample used in this equipment is radioactive. Damage to body tissue

can result from mishandling.

Do not remove the test sample from the chain attaching it to the carrying

case.

Do not handle the test sample by the radioactive end (purple end).

Do not prolong exposure to the radiation and handle the test sample un-

protected.

1-14. PRINCIPLES OF OPERATION The radiac set indicates the presence of radiation by clicks in the

headset and by readings shown on the radiacmeter panel meter. The meter reading and the frequency of

the clicks are proportional to the radiation intensity.

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