Low-level gas flow Beta multicounter system for the measurement of 5 samples simultaneously. The basic part of the Risø low-level beta multicounter system is a gas-flow unit with dimensions of 50x100x250 mm. which incorporates five individual GM sample counter elements and a common guard counter.
1、Lower background：The background can be reduced to <0.2 CPM with 100mmlead shieldine.
2、Input voltage and power: normal working range of the laboratory.
3、Counter gases :99% Argon and 1% Isobutane; or 99% Argon and 1% Propane.
4、The controller includes 5 sample channels and 1 protection channel.
5、Sample counter elements: 25 mm diameter with aluminized mylar window (<1 mg/cm2).
6、Cosmic ray noise reduction: anticoincidence technique.
8、Size of sample box :25 mm diameter.
9、System operation: computer operation software control,
10、Calibration sources: 5 Tc-99 calibration sources.