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Other (weirdo tubes) ·Other

EIP12

One-shot evaporation ion pump incorporating a Bayard-Alpert gauge and zirconium getter filament, providing both vacuum pumping and independent pressure measurement.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

One-shot evaporation ion pump incorporating a Bayard-Alpert gauge and zirconium getter filament. The gauge can also be used independently for pressure measurement; the sheet specifies pumping speed, pressure range, sensitivity, emission current, insulation resistance, and operating conditions.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Other

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Evaporation ion pump with Bayard-Alpert gauge

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Other

Characteristic

  • Pressure range, pumping 107310

    10711 torr

  • at

    10 mA

  • emission current

    0.4 Vs

  • Gauge emission current range 1l uA to

    75 mA

  • tter ter

    145 v

  • gauge [1]

    550 V

  • gauge [2]

    8 v

  • vl o oo Oy filament

    8 v

  • measurement 100 A, [1]

    1 mA

  • measurement 100 A, [2]

    10 mA

  • outgassing

    75 mA

Other

  • measurement and pumping outgassing

    5 v

  • collector] getter collector oter

    178 V

  • collector] getter collector oter

    ~28 v