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IOG12

Bayard-Alpert ultra-high-vacuum ionization gauge head designed for pressure measurement into the extreme-high-vacuum region, with published nitrogen sensitivity.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 8 V / -

Description

Bayard-Alpert ultra-high-vacuum ionization gauge head. Electrical ratings, heater data, operating limits, and published characteristics are captured from the supplied datasheet.

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: 8 V
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

Gauge

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published ratings/characteristics are also preserved as parameter rows.

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

Gauge

Other

range
1077 torr
range 1077 torr to 10-10 torr; sensitivity approx. 12 per torr.
range
-10 torr
range 1077 torr to 10-10 torr; sensitivity approx. 12 per torr.
range
12 per torr
range 1077 torr to 10-10 torr; sensitivity approx. 12 per torr.
Pressure range
-10 torr
Pressure range 10-3 t0 10-10 torr
Sensitivity (for nitrogen) approx
12 per torr
Sensitivity (for nitrogen) approx. 12 per torr
Emission current range
1 uA
Emission current range 1uA to 75 mA
Emission current range
75 mA
Emission current range 1uA to 75 mA
28V +
28 V
28V +
+145V
145 V
+145V. 550V
+145V
550 V
+145V. 550V
measurement
100 uA
measurement 100 uA, 1 mA or 10 mA
measurement
1 mA
measurement 100 uA, 1 mA or 10 mA
measurement
10 mA
measurement 100 uA, 1 mA or 10 mA
outgassing
75 mA
outgassing 75 mA
Pressure (filament litt) max
1073 torr
Pressure (filament litt) max. 1073 torr
Filament voltage max
8 V
Filament voltage max. 8 V
Emission current max
75 mA
Emission current max. 75 mA
Grid input power max
40 W
Grid input power max. 40 W
Bulb temperature during operation max
100 °C
Bulb temperature during operation max. 100 °C
Ix=75mA at Vg=550V ]
75 mA
Ix=75mA at Vg=550V ]
Ix=75mA at Vg=550V ]
550 V
Ix=75mA at Vg=550V ]
k=10mA at Vg=145V
10 mA
k=10mA at Vg=145V
k=10mA at Vg=145V
145 V
k=10mA at Vg=145V
6 Vi (V)
6 V
6 Vi (V) 8