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

6MX7S

Russian precision mechanotron displacement and force transducer with high sensitivity, low drift, and long rated service life. Mechanical movement directly modulates electrode current.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 170 mA

Description

Mechanotron for precision measurement of displacement and force in instrumentation. Extracted and translated from the complete Russian entry corresponding to the PDF filename; neighboring page-break fragments were excluded.

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
6.3 V
Nominal heater current
170 mA
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

Sensor

X-ray radiationInterelectrode capacitances
Plate resistance
2000 Ω
Max plate voltage
17 V

Values promoted from the complete filename-matched Russian entry only.

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

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Sensor

Characteristic

  • Internal resistance

    2 kOhm

    Translated from Russian source; filename-matched entry only

  • Current sensitivity to displacement

    235 uA/um

    Translated from Russian source; filename-matched entry only

  • Output drift maximum

    0.02 um/h

    Translated from Russian source; filename-matched entry only

  • Temperature sensitivity maximum

    0.05 um/C

    Translated from Russian source; filename-matched entry only

  • Self measuring force maximum

    0.25 N

    Translated from Russian source; filename-matched entry only

  • Service life minimum

    24000 h

    Translated from Russian source; filename-matched entry only

  • Maximum plate voltage

    17 V

    Translated from Russian source; filename-matched entry only