UHV Series Gauge Tube Vacuum Measurement Ionization Guage Tubes Nude -

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Vacuum Measurement
Ionization Guage Tubes - Nude Ionization - UHV Series

UHV Series Gauge Tube

Features
High Temperature UHV compatible Del-Seal™ CF flange Stainless steel construction

Vacuum Specifications
Vacuum Range	10^-3 to 2x10^-10 Torr
Maximum Operating Pressure	1x10^-3 Torr
Sensitivity ±20%	25 Torr
X-ray Limit	2x10^-10 Torr
Construction Specifications
Flange	304ss
Grid	Tungsten
Filament	Dual: Tungsten or Iridium
Collector	Tungsten
Shield Coating	Platinum
Base Leads	Soft Nickel, 0.060" dia.
Collector Lead	Soft Nickel, 0.040" dia.
Operating Specifications
Collector	0 Volts DC
Grid	+180 Volts DC
Filament	+30 Volts DC
Filament Voltage	3 - 4.5 Volts
Filament Current	2 - 4 Amps
Degas by I2R	30-40 Watts
Emission	4 mA
Max. Bakeout Temperature	450ºC
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All "In Stock" parts ships same business day as ordered. Lead Time indicates business days. Please Note that cut off time for same day shipment is 1:30 p.m. Pacific Standard Time. Prices and specifications are subject to change without notice. See full terms of sale here.

Drawings download if available are indicated by in the Part Number column. Click on to go to Downloads Page

NOMINAL FLANGE	DESCRIPTION	WT LB	Part Number	UOM	List Price	Net Price	Lead Time	Qty
2-3/4	TWIN TUNGSTEN FILAMENT, UHV GAUGE TUBE	3/4	432004 REF# UHTT	EACH	$465.00	$465.00	15 days
2-3/4	TWIN IRIDIUM FILAMENT, UHV GAUGE TUBE	3/4	432006 REF# UHIR	EACH	$463.00	$463.00	15 days

Tube Interchange / Cross Reference Table

Several of the MDC tubes will directly interchange with models of various manufacturers as noted in the Cross Reference Table. While tubes may have identical electrical specifications with tubes from other manufacturers not listed, pin-out dimensions may vary.

	Replacement for			MDC Reference	MDC Part Number
Description	Granville-Phillips	Perkin-Elmer	Varian	MDC Reference	MDC Part Number
TWIN TUNGSTEN FILAMENT, UHV GAUGE TUBE	274022	605-7673	-	BAIR	432004
REPLACEMENT FILAMENT FOR 432004	274024	605-7671		UHRT	432005
TWIN IRIDIUM FILAMENT, UHV GAUGE TUBE	274023	605-7672		UHIR	432006
REPLACEMENT FILAMENT FOR 432006	274029	605-7676	-	UHRI	432007

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