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931_Beckman

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ID = 35478
       
 
   
Tube type:  Screen-grid Tetrode 
Identical to 931_Beckman
Similar Tubes
Normally replaceable-slightly different:
  930_Beckman

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament
Description Electrometer tube for pH-meter, specially selected for Beckman Instruments. 
Text in other languages (may differ)
Information source - - Manufacturers Literature   Manual for Beckman pH-meter type G


Just Qvigstad
Usage in Models 1= 1957

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

 
beckman_931_b.jpg

931_Beckman
 

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