TELEVAC 7B Penning Magnetron Cold Cathode Vacuum Sensor

The TELEVAC 7B Penning magnetron cold cathode sensor has a measurement range from 1 × 10-7 Torr up to 1 × 10-3 Torr. It indirectly measures absolute pressure by ionizing gas in the presence of a magnetic field. Unlike hot filament sensors, the 7B is resistant to inrushes of gas. The design of this sensor allows for easy disassembly, enabling quick cleaning and extended use. The 7B can be operated by the TELEVAC MM200 or MC300 rack-mountable controllers. These controllers automatically operate the cold cathode to provide a full-range vacuum measurement solution when the 7B is used in conjunction with rough vacuum sensors.

The TELEVAC 7B Penning Magnetron Cold Cathode Features

  • Competitively priced
  • Easily cleaned for extended sensor lifetime
  • Durable construction
  • Reliable Penning magnetron technology
  • Resistant to inrushes of gas
  • Mountable in any orientation
  • Excellent customer support
  • Designed and manufactured in the United States of America


Operating Range1 × 10-7 Torr to 1 × 10-3 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≤ 50 ms
Accuracy1 × 10-6 Torr to 1.0 × 10-3 Torr: ± .2 decade

Analog Output Behavior



7B Sensor 3/4” NPT2-2100-263
7B Sensor 3/4” Straight Brass2-2100-264
7B Sensor 1” Straight Brass2-2100-265
7B Sensor 1 1/4” Straight Brass2-2100-266
7B Sensor 1” Straight Stainless Steel2-2100-267
7B Sensor NW25 (DN25 ISO-KF) Stainless Steel2-2100-272

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.

7E Double Inverted Magnetron Cold Cathode Sensor – This sensor has a measurement range from 1 × 10-8Torr 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, MC300, and 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.

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.