СИ-9А детектора альфа-излучения
                  SI-9A α Radiation Counter Tube
				  Compteur Geiger-Müller sensible au rayonnement Alpha
				  Alpha-Zählrohr
              
 Manufactured by Zaprudnya Factory of Electrovacuum Devices (ZELTA), Russia.
              Working voltage: 330-390 V
               
              Maximum working speed of count: 1000 pulses/s
              Starting voltage: less than 400 V
              Plateau slope: 0.2 %/V
              Fiche technique • Data sheet • Datenblatt:
              Russian_Detectors_and_Counters_3.pdf
               
			  
              Hauteur • Height • Höhe : 71 mm • 2" 3/4
              Diamètre • Diameter • Durchmesser : 29 mm • 1" 1/8
			  
			  
               
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