TELEVAC 7E Double Inverted Magnetron Cold Cathode

The TELEVAC 7E cold cathode sensor has a measurement range from 1 × 10-8 Torr up to 1 × 10-2 Torr. It indirectly measures absolute pressure by ionizing gas in the presence of a magnetic field. Unlike hot filament sensors, the 7E is resistant to inrushes of gas. The design of this sensor allows for easy disassembly enabling quick cleaning and extended use. The 7E can be operated by several TELEVAC controllers, including the MM200 or MC300 rack-mountable controllers and the MP7ER. The MM200 and MC300 controllers automatically operate the cold cathode to provide a full-range vacuum measurement solution when the 7E is used in conjunction with rough vacuum sensors.

The TELEVAC 7E Double Inverted Magnetron Cold Cathode Features

  • Cleanable design for extended use
  • Compact design
  • Improved sensitivity when compared to Penning magnetrons
  • Mountable in any orientation
  • Minimal stray magnetic field
  • Interchangeable with 7F, 7FC, 7FCS
  • Excellent customer support
  • Designed and manufactured in the USA


Operating Range1 × 10-8 Torr to 1 × 10-2 Torr
Analog OutputController dependent
Supply VoltageController dependent
Mounting OrientationAny
Calibration MediumDry air or nitrogen
Overpressure150 psi
Analog Output ResolutionController dependent
Operating Temperature0 °C to 50 °C
Storage Temperature-20 °C to 70 °C
Bakeout Temperature120 °C
Response Time≤ 10 ms
Accuracy1 × 10-7 Torr to 1 × 10-2 Torr: ± .2 decade

Analog Output Behavior



7E 1” Straight2-2142-013
7E NW16 (DN16 ISO-KF)2-2142-030
7E NW25 (DN25 ISO-KF)2-2142-031
7E NW40 (DN40 ISO-KF)2-2142-032
7E 2.75” CF (DN40 ISO-CF-F)2-2142-052

7F Double Inverted Magnetron Cold Cathode Sensor – This sensor has a measurement range from 1 × 10-11Torr up to 1 × 10-2 Torr. It indirectly measures absolute pressure by ionizing gas in the presence of a magnetic field. Unlike hot filament sensors, the 7F is resistant to inrushes of gas. The design of this sensor allows for an extended range of measurement and high bakeout temperatures up to 400 °C. The 7F can be operated by several TELEVAC controllers, including the MM200, MC300, and MP7FR. The MM200 and MC300 controllers automatically operate the cold cathode to provide a full-range vacuum measurement solution when the 7F is used in conjunction with rough vacuum sensors.

MP7ER Active Gauge – This gauge measures high vacuum from 1 × 10-8 Torr up to 1 × 10-2 Torr utilizing a double inverted magnetron sensor. It has a linear or logarithmic 0 V to 10 V analog output with a relay set point and an LED display of pressure.

MM200 Vacuum Sensor Controller – The MM200 controls any TELEVAC vacuum sensor including cold cathode, convection, diaphragm, hot ion, and thermocouple sensors. It also has optional features including up to 8 relay set points and RS-232/RS-485 communications. The large, bright LED display makes it easy to read from a distance. The MM200 is a modular unit, allowing customers to choose a vacuum sensing solution specific to their needs.