Vacuum Gauge, Glass Bayard-Alpert, Dual Tungsten Filament, 0.75 in. Metal Inlet Port
Model:
274013
Vacuum Gauge, Glass Bayard-Alpert, Dual Tungsten Filament, 0.75 in. Metal Inlet Port
Vacuum Gauge, Glass Bayard-Alpert, Dual Tungsten Filament, 0.75 in. Metal Inlet Port
Model:
274013
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274013 Vacuum Gauge, Glass Bayard-Alpert, Dual Tungsten Filament, 0.75 in. Metal Inlet Port $160
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Overview
The 274013 Glass Bayard-Alpert Hot Cathode Gauge features dual tungsten filaments, a <1 x 10-9 to 1 x 10-3 Torr vacuum measurement range, and a 3/4 inch Kovar metal inlet port. 274 Ionization Vacuum Gauges provide good vacuum and pressure measurement at an economical cost. Bayard-Alpert (hot cathode) gauges provide pressure measurement based on the ionization of gas molecules by a constant flow of electrons from a filament. The number of ions created is directly proportional to the density of molecules. The ions are collected and measured by a vacuum gauge controller and converted to pressure based on the sensitivity of the gauge.
Technical Specs
Type
Vacuum Gauge
Sensor Type
Bayard-Alpert Hot Cathode
Measurement Range
1.0 x 10-9 to 0.001 Torr
Fitting Type
Kovar metal inlet port
Port Size
0.75 in.
Filament
Dual Tungsten
Collector
Tungsten, .010 in. diameter
Accuracy
±20% (typical)
Bake Out Temperature
450°C
Installation Orientation
Any, Vertical preferred
Envelope
Nonex 7720 glass, 2.25 in. (57 mm) OD, 5 in. (127 mm) long
Grid
Refractory Metals
Length
6 in. (152 mm)
Sensitivity
10/Torr
X-ray Limit
3 x 10-10 Torr (approximate)
Electron Bombardment Degas
100 Watts maximum
Resistance Heated Degas
6.3 to 7.5 VAC at 10 Amps (l2 R)
Filament Voltage Potential
+30 VDC
Collector Potential
0 V
Grid Potential
+180 VDC
Filament Heating Current
4 - 6 Amps
Filament Heating Voltage
3 - 5 V
Technical Specs
Type
Vacuum Gauge
Sensor Type
Bayard-Alpert Hot Cathode
Measurement Range
1.0 x 10-9 to 0.001 Torr
Fitting Type
Kovar metal inlet port
Port Size
0.75 in.
Filament
Dual Tungsten
Collector
Tungsten, .010 in. diameter
Accuracy
±20% (typical)
Bake Out Temperature
450°C
Installation Orientation
Any, Vertical preferred
Envelope
Nonex 7720 glass, 2.25 in. (57 mm) OD, 5 in. (127 mm) long
Grid
Refractory Metals
Length
6 in. (152 mm)
Sensitivity
10/Torr
X-ray Limit
3 x 10-10 Torr (approximate)
Electron Bombardment Degas
100 Watts maximum
Resistance Heated Degas
6.3 to 7.5 VAC at 10 Amps (l2 R)
Filament Voltage Potential
+30 VDC
Collector Potential
0 V
Grid Potential
+180 VDC
Filament Heating Current
4 - 6 Amps
Filament Heating Voltage
3 - 5 V
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Vacuum Gauge, Glass Bayard-Alpert, Dual Tungsten Filament, 0.75 in. Metal Inlet Port
Vacuum Gauge, Glass Bayard-Alpert, Dual Tungsten Filament, 0.75 in. Metal Inlet Port