Welcome
| Company Profile
| Products
| GRAETZ News
| Service
> General Service Information
| Downloads
| Contact
| Imprint
| 
General Information |
| Ionizing Radiation |
Alpha Radiation
consists of alpha particles (helium nucleus) with an emission velocity of approx.
107 m/s. Due to its positive charge it can be deflected by
electric and magnetic fields. The range of alpha particles in the air is only a
few centimeters. One or two sheets of paper are sufficient to shield this radiation.
Danger is restricted to contamination of the skin or to incorporation.
Beta Radiation
consists of electrons having different velocities between 108 m/s
and 0,999•c (c = velocity of light) and energies of approx. 0,1 MeV up to 3 MeV.
Due to its negative charge it is deflected opposite to alpha particles in electric
and magnetic fields. The range of beta radiation in the air is very different due
to the varying energies (between 10 cm and 11 m).
Gamma Radiation
or photon radiation is an electromagnetic radiation with wavelengths of approx. 10
-12 m and energies between 0,01 MeV and 10 MeV for radioactive
materials. In contrast to alpha and beta radiation gamma radiation has no finite
maximum range.
| Handling Tips |
Storage of GRAETZ Instruments
Storage temperatures acc. to the operation instructions have to be kept.
The place of storage has to be dry. If the instrument is stored for a longer
time, batteries have to be removed in order to avoid damage by leakage.
For at least once a year a device should be operated for example for one hour.
Cleaning the devices
Should an instrument be wet after use in rain or snow, it has to be dried at
room temperature. Dirty parts have to be cleaned with a damp cloth and dried
afterwards.
Contaminated devices have to be cleaned with a soft brush and a lukewarm
decontamination liquid (0,5% decontamination material and alkaline cleansing
agent, dissolved in water) or by using a customary mild detergent.
Please do not use organic solvents or caustic cleansing agents!
After cleaning it has to be checked, whether the instrument is free of
contamination.
Disposal of your old GRAETZ Instruments
Old electric/electronic devices frequently contain worthy, but also harmful
materials which have been necessary for their function.
PLEASE NOTE: Old devices do not belong to domestic waste! GRAETZ
Strahlungsmeßtechnik GmbH takes your old GRAETZ device back free of charge and
takes care of its correct disposal. This offer applies to devices delivered
from August 2005 on.
| back to top |
Welcome
| Company Profile
| Products
| GRAETZ News
| Service
> General Service Information
| Downloads
| Contact
| Imprint
|