44-2 Low Flashcards
1
Q
What is it used for?
A
Detecting low levels of gamma radiation. Range 60 keV-1.25 MeV
2
Q
Common applications
A
- Background radiation monitoring
- Detecting low levels of gamma
- Spectrum analysis
3
Q
Volts it operates between?
A
500-1200V
4
Q
Sensitivity
A
175cpm per uR/hr (Cs 137 gamma)
5
Q
Construction
A
Beige aluminum housing with polyurethane enamel point
6
Q
Operating temperature
A
5-122 degrees F (may be certified for -40 to 150 degrees F)
7
Q
What kind of scintillator does it have?
A
Sodium Iodide (NaI) crystal inside of a photomultiplier tube
8
Q
Background
A
1800 cpm
9
Q
What is considered to be a proper background reading?
A
8-15 uR/hr
10
Q
When using a check source, what range should the reading be within from the last calibration?
A
20%
11
Q
Max relative humidity
A
Less than 95% non-condensing
12
Q
Steps for cleaning
A
- Turn the instrument off
- Allow instrument to sit for 1 min
- Disconnect the detector cable
Do not submerse in water
