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ID = 35598
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Ionisation or Vacuum Gauge 
Identical to D-79512
Similar Tubes
Different maximum ratings:
Predecessor Tubes 205B  

Was used by Technology / Measurement
Filament Vf 4.5 Volts / If 1.6 Ampere / Direct

Ionization gauge with glass tube on top as inlet measurement port. Pear-shaped hard-glass (Nonex) version of D-79510.

As ionization gauge the anode is biased negative, -2 to -10 volts, while the grid must be positive, 100 to 125 volts typical, 5 to 25 mA. In operation filament voltage must be reduced for a grid current of 21 mA at 110 V DC. In this condition the pressure in mm. of mercury is about five times the plate current in amperes, P = 5 Ip.

Data and applications given in a PDF booklet attached to the D-79510 sensor.

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