Operation Manual

Limits, Rechargeable Battery Operation

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 showing the measured value is a bar chart illustrating the detected dose is illustra-

ted. The symbols state that one can be exposed to this radiation for longer than 1 year ( >1a) be-

fore the legal maximum of 20 mSv p.a. is reached. Higher radiation shortens this time of exposure.

Operating Range

GAMMA-SCOUT

has been conceived for monitoring (constant monitoring with log) normal working

and environmental locations. Very strong gamma radiation loads, above 1000 µSv/h (5,000 times

normal radiation in Heidelberg), cannot be measured with this technology. Should this occur,

“Overow” and an alarm symbol will appear in the display. Data above the measurement limits

is marked with (*) in the download table. Reset icon by pressing button twice.

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 RECHARGEABLE model. This model needs a different

power supply, and is therefore equipped with a rechargeable battery. Charging starts automatically

when the GAMMA-SCOUT

is connected to a PC via a USB port (or with the power supply unit

included).

Charging time with the power supply unit is ca. 8 hours. An internal charging circuit prevents over-

charging. The charge status is displayed by pressing the button.

Full charge = 4.0 V. Models Standard and w/ALERT show about 3.6 V.