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Technical Information
Technical Specifications
Table 1
Filament Voltage
Filament Current
Element Voltages
Degas Power Requirements (40 W)
Measurement Specifications
Materials
Agilent UHV-24/UHV-24p Ionization Gauge User Manual
Technical Specifications
3 to 4.5 V (AC or DC) - Varies with pressure and emission current
2.5 to 3.5 A - Varies with pressure and emission current
Collector voltage: V
= 0
c
Filament voltage: V
= 28 VDC
fil
Grid voltage, V
= +180 VDC
g
Grid Voltage: +600 VDC max
Emission Current (total): 67 mA DC
Filament Voltage: 7 V
Sensitivity:
• 25/Torr (UHV-24), nominal
• 20/Torr (UHV-24p), nominal Emission Current:
• 4 mA for widest measurement range 5x10
to 1x10
-4
Torr
• 10 mA for pressures lower than 5x10
pressure over 1x10
-4
Torr
Filament: Tungsten or yttria-coated iridium filaments
Filament Supports: SST
Collector - tungsten:
• 0.007" diameter for UHV-24
• 0.002" for UHV-24p
Grid: SST
Feedthrough: SST, Alumina, Nickel Alloy
-10
Torr
Torr ≤ 0.1 mA for
-10
19
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