Thermocouple Vacuum Gauge Tubes

Digital AVC Vacuum Controller

Digital AVC Vacuum Controller

The Teledyne Hastings Instruments (THI) Digital AVC (DAVC) is a microprocessor controlled vacuum gauge meter without readout. In addition to the analog output (0-1 VDC), pressure measurements can be accessed by an RS232 serial port using Torr, mbar or Pa.

A precision A/D converter along with the microprocessor
measures the thermocouple vacuum gauge tube’s signal output, converts the measurement to a pressure reading employing the gauge tube’s well-defined output/pressure function, and transmits the result.

These instruments are packaged in a small extruded aluminum case with controls and D-connector mounted on the top cover.

The Digital AVC Vacuum Gauge Meter is available for two of THI’s most popular gauge tube families: the DV-6 and the DV-4. The DV-6 range is 1-999 mTorr. The DV-4 range is 0.02-20 Torr.


  • Operates Hastings Instruments’ Most Popular DV-4 and DV-6 Gauge Tubes
  • Ranges: DV-6 (1 – 999 mTorr), DV-4 (0.02 – 20 Torr)
  • Direct Replacement for the Model AVC
  • Octal Connector to Vacuum Gauge Tube
  • 9 Pin D-sub Electrical Connector
  • Compatible with Calibration Reference Tubes
  • 12 – 30 VDC Input
  • 0 – 1 VDC Output (Nonlinear)
  • TTL Setpoint for Process Control (w/ LED)
  • RS-232
  • CE Compliant: EN61326


• Cryogenics/Vacuum Insulation
• Vacuum Furnaces
• Pharmaceutical Production
• Freeze Drying
• Agricultural Processes
• Glove Boxes
• Air Conditioning
• Plasma Coating
• Refrigeration (HVAC)
• Accelerators
• Appliance Manufacturing