Vacuum Gauges

Serving Science & Technology since 1988

The Vacuum Specialist Company

xtronix is a diversified technology supplier to academic and government research, corporate R&D and hi-tech industry.

portfolio1 portfolio2 portfolio3 portfolio4

Glass or Ceramic sealed F/T's

An important variety of vacuum feedthroughs are available from our selection.

These can include high current, high voltage, flange-mounted, etc.

Call or email us your specifications for a quotation.

Ionization Gauges

Bayard-Alpert glass-body and CF-mounted nude UHV ionization gauges.

Our high quality B-A gauges are direct replacements to major brands. We carry a large inventory.


A large selection of sizes!

Standard and on request materials include Kodial, Quartz, Sapphire, MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si and Lead Glass.

Call us to discuss your needs!

Custom Pirani Gauges

These glass-to-metal sealed Pirani gauges were built to order for a major International instrumentation manufacturer

We delivered a first batch of 250 gauge sensors followed by a second order for 100.

small portfolio1 small portfolio2 small portfolio3 small portfolio4
Glass / Ceramic Quality Vacuum Components
get in touch


Contact us for your special connector needs. High voltage, high current, bakeable to high temperatures and more.


Glass-to-metal feedthoughs for various electrical characteristics. They can be delivered on KF or CF flanges.


Need a replacement Bayard-Alpert gauge? We have dozens of models for most brands, glass body or nude UHV versions.

Main Menu:


Describe the photo or the page it links to

If you need simple rough vacuum measurement, we can help! We have low cost instruments for various needs, including 'unbranded' digital or analog panel mounts for OEM requirements.


Describe the photo or the page it links to

We supply ionization gauge filaments, Temescal / Telemark electron beam gun replacement parts, Commonwealth and Ion Tech source parts, Krytox oil, LVP grease, silicon and Santovac 5 diff pump fluids.


Describe the photo or the page it links to

This new site conforms to XHTML syntax and is compliant with the corresponding standard semantic markup. It caters to the mobility generation; so well adapted to Smartphone and tablet users.

Vacuum Gauges


xtronix is a major supplier of generic vacuum gauges, with emphasis on Bayard-Alpert and Thermocouple sensors.

We match an estimated 95% of the world's B-A gauge supply. So there is over four out of five chance we can match the model you presently use. Just let us know the brand and part number used and we will quote an economical xtronix sensor head having the the same electrical characteristics, size and pin-outs. Buying an xtronix gauge also means you are buying a high quality product.


Economical 100% drop in replacements for over a dozen brands!

  • Choice of twin Tungsten or Thoria-coated Iridium

  • Choice of Miniature, Wide Body & Broad Range

  • Choice of 0.75" or 1" Ø Glass, Pyrex® or Kovar® tubulation

  • Choice of internal platinum shield or plain glass body

  • Choice of 25 KF, 40 KF or 35 CF flange on Kovar® tubulation


UHV Nude Gauges




  • Filament: Twin tungsten or thoria-coated iridium.
  • Filament voltage: 3.0 - 4.5 Volts (sensitivity setting 4.0 mA on grid).
  • Filament: Twin tungsten or thoria-coated iridium
  • Degas: Electron bombardment at 30 to 40 watts.
  • Grid: Platinum-clad molybdenum (both support and lateral turns)
  • Grid potential: +180 Volts.
  • Collector: Tungsten.
  • Filament potential: +30 Volts.
  • 2 3/4" CF flange (NW35 CF).
  • Collector potential: 0 Volts.
  • Inserted length: 3".
  • Vacuum range: 10-3 -10-11 Torr.
  • Bakeable to 450° C. 
  • Mountable in any position (best vertical).

Our large selection of TERRANOVA Vacuum Gauge Controllers can address any pressure range from rough vacuum through to 10-11 Torr using various standard sensors. Modern digital electronics permit for local and remote operation.

Analog & Digital Thermocouple Gauge Meters

On stock, thermocouple replacement gauge heads and analog or digital panel instruments. We match replacement TC gauge heads for several brands.


slide up button

Explore our affiliate sites via these links

xtronix main Beamline Science Gas Flow Management SciTech Blog eCommerce