15
•
AUD and VIS indicate that the Audio
and Visual alarms are both enabled.
•
The unit will start counting and display-
ing the instantaneous Rate. Naturally
occuring background radiation will
cause the unit to display a low reading.
1
•
To switch to the Dose Mode, press the
DOSE key.
•
Press the RATE key to return to the
Rate Mode.
•
The rate units indicator
( )
µ
R
hr will
blink slowly to show that the Rate
Mode is active.
Figure 3 The Rate Display
1. Naturally occuring background radiation typically measures
less than 20
µ
R/h or 0.20
µ
Sv/h.
