SPRD-GN Flashcards
Can this be used in an explosive environment?
No
True or False: This is intended to be used as a personal dosimeter.
False
What is the gamma dose rate limited to?
25 mrem/h
(250 uSv/h)
What kind of batteries does this take? How many hours of battery life does it have?
- 2 AAA LiH batteries
- Est 150 hours
What kind of radiation does it detect?
Gamma and Neutron
What does NBR stand for and what is its function?
Natural Background Rejection. This algorithm allows the SPRD separate man made gamma radiation from naturally occurring background radiation.
What does NORM stand for?
Naturally Occurring Radioactive Material
What kind of technology does is use? Describe how it works.
A single CLYC (Cesium Lithium Yttrium Chloride) scintillator simultaneously detects neutron and gamma radiation. The CLYC is also equipped with a mini silicon photomultiplier (SiPM), allowing the detection of very low levels of radiation.
How many measurement values are recorded internally?
At least 1600 mean and max values of the gamma dose/count rate and neutron count rate are recorded
What color flashes when gamma is detected?
Orange
What color flashes when neutron is detected?
Blue
How do you acknowledge alarms?
Hit button on the top right of the SPRD
What units of measure can the SPRD display?
Cps, Roentgen, Rem, Gray, Sievert
What is displayed on the screen when a Lu test is required?
A triangle with an exclamation point on the left side. The number of days past the test date at the top. “Lu-adjust required” along the bottom.
You can acknowledge with the right arrow or start the test with the left arrow.
Are neutron dose rates and calculations performed?
No
What will the screen show if the meter encounters a higher dose rate than what it can measure?
“Overload”
Can you use the SPRD in pulsed fields?
No
What is this meter used for?
Detecting and localizing gamma and neutron radiation sources
The use of _________ for neutron detection makes the RadEye SPRD-GN an ideal solution for gamma-neutron detection.
Pulse Shape Discrimination (PSD)
Are the gamma and neutron audible alarms different?
Yes
How long is the “Learning” period?
After startup the message “Learning” is displayed together with a progress bar for the first 16 s.
What happens when the meter is “Learning”?
During this time the sig-
ma-alarm levels of the gamma channel is adapted more quick-
ly to the current radiation level. During this time period the sigma alarms are active, however not yet with the full sensitivity.
What is shown on the basic display screen after being turned on?
The gamma channel
What does the “On” key or down arrow do?
Normally the On key toggles between standard display and
gamma value on a time axis
