Compare Model Drawings, CAD & Specs Fitting Type Filament Availability Price
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Dual Tungsten Filament, 2.75 in. CF
$525
CF Flange Dual Tungsten
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Dual Thoria-coated Iridium Filament, 2.75 in. CF
$565
CF Flange Dual Thoria-coated Iridium
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Single Thoria-coated Iridium Filament, 2.75 in. CF
$525
2.75 in. CF Flange Single Thoria-coated Iridium
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Dual Tungsten Filament, 2.75 in. CF, Pin Guard
$595
2.75 in. CF Flange with Pin Guard Dual Tungsten
Vacuum Gauge, Nude Bayard-Alpert, Dual Thoria-coated Iridium Filament, 2.75 in. CF, Pin Guard
$625
2.75 in. CF Flange with Pin Guard Dual Thoria-coated Iridium
Vacuum Gauge, Nude Bayard-Alpert, Single Thoria-coated Iridium Filament, 2.75 in. CF, Pin Guard
$595
CF Flange with Pin Guard Single Thoria-coated Iridium
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Dual Tungsten Filament, NW40 ISO-KF
$535
NW40 ISO-KF Dual Tungsten
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Single Thoria-coated Iridium Filament, NW40 ISO-KF, Pin Guard
$610
NW40 ISO-KF with Pin Guard Single Thoria-coated Iridium
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Dual Tungsten Filament, NW40 ISO-KF, Pin Guard
$610
NW40 ISO-KF with Pin Guard Dual Tungsten
274 nude bayard-alpert ionization vacuum sensor
Vacuum Gauge, Nude Bayard-Alpert, Dual Thoria-coated Iridium Filament, NW40 ISO-KF, Pin Guard
$635
NW40 ISO-KF with Pin Guard Dual Thoria-coated Iridium

Specifications

  • Sensor Type
    Bayard-Alpert Type Ionization Vacuum Gauge
  • Collector
    Tungsten, 0.005 or 0.010 diameter
  • Accuracy
    ±20%
  • Bake Out Temperature
    450°C
  • Installation Orientation
    Any
  • Envelope
    Nude with 2 3/4 in. OD ConFlat flange
  • Cathode
    Dual tungsten or dual thoria coated iridium on replaceable assembly or Thoria coated iridium on replaceable assembly
  • Grid
    Refractory Metals
  • Length
    4 1/8 in. (105 mm)
    3 in. (76 mm) Insertion length
  • Sensitivity for N2
    Electron Bombardment Degassable: 25/Torr
    Resistance Heated Degassable: 10/Torr
  • Electron Bombardment Degas
    40 watts max.
  • Resistance Heated Degas
    100 watts max., 70 watts nominal
  • Cathode Heating Current
    Electron Bombardment Degassable: 2.5 to 3.5 A
    Resistance Heated Degassable: 4 to 6 A
  • Cathode Heating Voltage
    3 to 5 V
  • Cathode Voltage Potential
    +30 VDC
  • Collector Potential
    0 V
  • Grid Potential
    +180 VDC

Features

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