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Tube Tinker — Electron Tube Database
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Specialized - Gauge Tube ·Gauge

6579

Thermistor thermal-conductivity vacuum gauge designed for approximately 0.1 to 1000 microns pressure.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
8GP
Socket code
-
Base pins
8
Nominal heater
-

Description

Thermistor thermal-conductivity vacuum gauge for approximately 0.1 to 1000 microns.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8GP
Socket code
-
Base pins
8
Nominal heater voltage
-
Nominal heater current
350 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8GP - 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

Gauge

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published applicable promoted ratings populated; remaining device-specific values retained as parameters.

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

1955 Vacuum Tube Products

Published operating points and test conditions from this source.

SECTION 1

Gauge

Characteristic

  • Heater Current Normal

    350 mA

  • Heater Resistance Cold

    32 ohm

  • Heater Resistance Hot

    40 ohm

  • Pressure Range

    0.1 to 1000 micron

Other

  • Heater Current Maximum

    500 mA

  • Heater-Thermistor Voltage Maximum

    75 V

  • Thermistor Voltage Maximum

    75 V

  • Thermistor Dissipation Maximum

    35 mW

  • Thermistor Circuit Current Maximum

    20 mA