14
ONYX OPERATION MANUAL
A Becquerel(Bq) is a measure of activity, and one
Bq is defines as 1 disintegration per-‐second. Units
are displayed in Bq/m
2
(Becquerel per square
Meter)
Note
: A
Bq Efficiency Value
must be set for this to
display
(Set this value in the
Settings/Geiger
Menu).
For this to be used with accuracy, Unit efficiency
needs to be known for the particular radionuclide
mix on the surface being measured.
•
QR Tweet
Displays a QR Code
representing a current
radiation count, which you may then scan with a
Smart Phone camera, to share that measurement
with your followers at
www.Twitter.com
.
You will
need a QR App on your smart-‐phone to use this
feature.
•
Log Status
Shows percentage usage of Flash Memory for data
logging, and shows remaining data logging
time
based on the current
Log Interval
setting.
Also shows number of readings logged and total
number of available data “slots”; for instance,
2/3772
indicates that 2 log events have been
recorded to Flash Memory out of the available
3,372 data point “slots” in Flash memory, given the
current
Log Interval
setting.
