User manual

R
Limits, Rechargeable Battery Operation
6
Normal Values of Exposure to Radiation, Limit Values
For individuals with professional exposure to radioactive sources in the EU, there are two legal
upper limits:
Dose rate limit is 6 mSv p.a. = 3 µSv/h (assuming 2,000 working hours per year), Category B
Dose rate limit is 20 mSv p.a. = 10 µSv/h (assuming 2,000 working hours per year), Category A
(An exclusion zone exists starting at 3 mSv/h)
The natural environment in Heidelberg, Germany has a radiation level of about 0.1 - 0.2 Micro-Sv/h
Below the digits that show the measurement value, the detected dose is illustrated on a bar chart.
The symbolism shows: one can be exposed to this radiation for longer than 1 year ( >1a), until the
legal maximum of 20 mSv p.a. is reached. Higher radiation shortens this time of exposure.
Operating Range of GAMMA-SCOUT
®
GAMMA-SCOUT
®
is used to control (constant monitoring with log) gamma radiation impact at home
andonthejob.Verystronggammaradiationloads,above1000µSv/h(5,000timesnormalradia-
tioninHeidelberg),cannotbemeasuredwiththistechnique.Incaseofsuchanevent,“Overow”
and an alarm symbol will appear in the display.
Resettheiconbydouble-pressingthebutton.Datafromoverow-statusismarkedwith(*)in
the download table. .
Device with Rechargeable Batteries (“RECHARGEABLE”)
For customers using the GAMMA-SCOUT
©
above 10 µSv/h in a laboratory (or preferring a rechar-
geable power supply), we constructed the model RECHARGEABLE. This model needs a different
power supply, therefore is equipped with a rechargeable battery. Charging starts automatically
when the GAMMA-SCOUT
©
has been connected to a PC through a USB port or with the power
supply unit that is included in delivery.
Charging time for power supply unit is 8 hours. Overcharging will be avoided by an internal char-
ging circuit. A display of the charge state can be seen by using the button.
Full charge = 4.0 V