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KJLC® 317 Series Pirani Gauges & 947 Controller KJLC® 317 Series Pirani Gauges & 947 Controller 1

KJLC® 317 Series Pirani Gauges & 947 Controller

Note The 317 gauge head and 947 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.

Ideal for rough to medium vacuum applications, including measurement of roughing and foreline pressures, activation of high vacuum sensors, or startup of a system process with the standard relay set points.


  • Convection-enhanced Pirani vacuum gauge controller
  • Digital LED display for clear, unmistakable readings
  • Wide measurement range of 10-3 to 10+3
  • Rapid responsiveness for critical applications
  • Two independent relay set-points for process control
  • Gas-type sensitivity ideal for leak detection
  • Multiple pressure unit versions available
  • CE marked


  • Zero adjust
  • Atmospheric adjust
  • Set-point functions


  • Semiconductor
  • Food processing
  • Analytical applications
  • R & D
  • Other industrial vacuum applications

Specifications Table

Measurement MethodPirani
Measurement Range1 x 10-3 to 1,000 Torr (1 to 1,333 mbar)
Communications InterfaceDigital RS-485, 9-pin, Sub-D-socket
Accuracy (% of measurement)±<1% of Decade
Temperature (operating)0-50° C
Temperature (bakeout)100° C for Shielded model (gauge tube only)
Materials Exposed to VacuumStainless steel, nickel, glass, platinum
Repeatability (Typical)5% of indicated pressure
Mounting/Installation OrientationHorizontal
Calibration GasAir/Nitrogen
Product Downloads
Product Downloads
Below is a list of available file downloads for this product.
KJLC 947 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
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Contact Us - KJLC® 317 Series Pirani Gauges & 947 Controller