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KJLC® 345 Series Pirani Gauges & 945 Controller KJLC® 345 Series Pirani Gauges & 945 Controller 1

KJLC® 345 Series Pirani Gauges & 945 Controller

Note The 345 gauge head and 945 controller are no longer offered. Please consider the 375/275 combo as a possible alternative and feel free to contact the KJLC product team at with any additional questions.

A new, economical single-channel controller that is ideal for applications in the rough to high vacuum range of 100 down to 10-4 Torr (133 to 10-4 mbar) including vacuum pump base pressure measurement and system process startup using the two standard set points.


  • Rugged filament design for reliable operation
  • Designed for harsh process environments
  • Rapid response to pump down and vent operations
  • Repeatable measurements and independent relay set points for optimum process control
  • Digital LED display
  • CE marked


  • Semiconductor
  • Load locks
  • Leak detection
  • Vacuum coating
  • Freeze dryers

Specifications Table

Measurement MethodPirani
Measurement Range1.0 x 10-4 Torr (1.3 x 10-4 mbar) to Atmosphere: 5% of reading Tconst
Communications Interface9-pin, Sub-D-socket
Temperature (operating)0-50° C
Temperature (bakeout)50° C
Materials Exposed to VacuumStainless steel, nickel 200, alumina, ceramic, platinum, silver brazing alloy
Repeatability (Typical)5% of indicated pressure
Mounting/Installation OrientationAny
Calibration GasAir/Nitrogen
Product Downloads
Product Downloads
Below is a list of available file downloads for this product.
KJLC 945 Series Manual
Product Cross-Reference Inquiry
Click here to fill out our form and KJLC can cross-reference your vacuum product and suggest either a replacement or equivalent product.
Gauge Selection Guide
With a variety of gauges to choose from, the Gauge Selection Guide is designed to help you find the right gauge to meet your vacuum requirements.
Gauges FAQ
Click here for answers to some of the most common questions we are asked.
Contact Us
Contact Us
To contact someone directly, please click here, or call +1 412 387 9200 to get in contact with your dedicated sales team.
Contact Us - KJLC® 345 Series Pirani Gauges & 945 Controller