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Specialized - Sensor Tube ·Sensor

56006

Omegatron mass-spectrometer sensing tube with platinum electrodes and tungsten cathode. It analyzes residual gases by separating ions according to mass-to-charge ratio and measuring partial pressures.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
B9G
Socket code
-
Base pins
9
Nominal heater
-

Description

Omegatron mass-spectrometer tube with platinum electrodes and tungsten cathode for gas analysis. Published data were interpreted from the complete supplied Philips datasheet, including ratings, characteristics, operating conditions, and construction notes.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
B9G
Socket code
-
Base pins
9
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

B9G - 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

Sensor

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Omegatron mass-spectrometer tube. Published electrode voltages, RF drive, magnetic-field and pressure data are retained as parameters; no canonical promoted field mapping is reliable.

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 0-D

Published operating points and test conditions from this source.

SECTION 1

Sensor

Characteristics

  • Usable partial-pressure range

    1e-11 to 1e-10 torr

  • Magnetic induction example

    0.4 Wb/m2

  • RF frequency relation

    f = 15.33e6 * B / M Hz

Other

  • Recommended filament voltage range

    0 to 2 V

  • RF voltage range

    1 to 5 V RMS

  • Grid-to-box D voltage

    -990 V

  • Electron collector voltage

    -80 V

  • Box D voltage range

    0 to 40 V

  • Ion collector voltage range

    -10 to 10 mV

  • RF generator frequency range formula

    60e3*B to 16000e3*B Hz

  • Maximum recommended electrode cleaning temperature

    800 degC

    Pressure<1e-9torr