44-2 Low Flashcards

1
Q

What is it used for?

A

Detecting low levels of gamma radiation. Range 60 keV-1.25 MeV

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2
Q

Common applications

A
  • Background radiation monitoring
  • Detecting low levels of gamma
  • Spectrum analysis
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3
Q

Volts it operates between?

A

500-1200V

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4
Q

Sensitivity

A

175cpm per uR/hr (Cs 137 gamma)

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5
Q

Construction

A

Beige aluminum housing with polyurethane enamel point

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6
Q

Operating temperature

A

5-122 degrees F (may be certified for -40 to 150 degrees F)

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7
Q

What kind of scintillator does it have?

A

Sodium Iodide (NaI) crystal inside of a photomultiplier tube

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8
Q

Background

A

1800 cpm

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9
Q

What is considered to be a proper background reading?

A

8-15 uR/hr

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10
Q

When using a check source, what range should the reading be within from the last calibration?

A

20%

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11
Q

Max relative humidity

A

Less than 95% non-condensing

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12
Q

Steps for cleaning

A
  1. Turn the instrument off
  2. Allow instrument to sit for 1 min
  3. Disconnect the detector cable

Do not submerse in water

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