Specifications

3
Chapter 1: Introducon
The Inspector EXP is a health and safety instrument that is opmized to detect low levels of radiaon. It mea-
sures alpha, beta, gamma, and x-ray radiaon (ionizing radiaon only).
Its applicaons include:
• Detecng and measuring surface contaminaon
• Monitoring possible radiaon exposure while working with radionuclides
• Screening for environmental contaminaon
• Detecng noble gases and other low energy radionuclides
How The Inspector EXP Detects Radiaon
The Inspector EXP uses a Geiger-Mueller tube to detect radiaon. The Geiger tube generates a pulse of
electrical current each me radiaon passes through the halogen quenched tube and causes ionizaon. Each
pulse is electronically detected and registers as a count. The Inspector EXP displays the counts in the mode you
choose.
The number of counts detected by the Inspector EXP varies from moment to moment due to the random
nature of radioacvity. A reading is expressed more accurately as an average over me, and the average is
more accurate over a longer me period. For details, see Operang in Timer Mode in Chapter 3.
Precauons
To keep the Inspector EXP in good condion, handle it with care, and observe the following precauons:
• CAUTION: Never touch the Inspector EXP to a surface that may be contaminated. You may contaminate
the instrument.
• Do not leave the Inspector EXP in temperatures over 100° F (38° C) or in direct sunlight for extended
periods of me.
• Do not get the Inspector EXP wet. Water can damage the circuitry and the mica surface of the Geiger
tube.
• Do not put the Inspector EXP in a microwave oven. It cannot measure microwaves, and you may damage
it or the oven.
• This instrument may be sensive to and may not operate properly in radio frequency, microwave,
electrostac, and electromagnec elds.
• If you do not expect to use the Inspector EXP for longer than one month, remove the baery to avoid
damage from baery corrosion. Change the baery promptly when the baery indicator appears on the
display.
• CAUTION: When using the unit at altudes higher than 8000 feet (2438.4 meters), it is possible that the
tube window can rupture.