Televac® 7E Double Inverted Magnetron Cold Cathode Gauge - Vacuum Gauge

Part Numbers: 2-2142-013, 2-2142-031, 2-2142-032, 2-2142-052


Compatible With: MX200, MX200 EthernetIP


Features and Benefits:

  • Low cost vacuum gauge
  • Easily cleaned cold cathode gauge for extended sensor lifetime
  • Durable Penning ionization gauge construction
  • Reliable cold cathode ionization gauge technology
  • Contamination resistant, resistant to inrushes of gas, and cleanable
  • Mountable in any orientation
  • Interchangeable with 7F, 7FC, 7FCS
  • Excellent customer support

The Televac® 7E cold cathode gauge (also called a vacuum pressure gauge or cold cathode ionization gauge) has a measurement range from 10-8 Torr up to 10-2 Torr. This vacuum gauge makes indirect absolute pressure measurements by ionizing gas in the presence of a magnetic field. Unlike hot filament vacuum gauges, the 7E cold cathode gauge is cleanable, contamination resistant, and isn’t as easily damaged by inrushes of gas.

The design of this vacuum gauge allows for easy disassembly, enabling quick cleaning and extended use. The 7E cold cathode ionization gauge can be operated by using the Televac® MX200 rack-mountable controller. Any vacuum controller will automatically operate the cold cathode to provide a full-range vacuum measurement solution when the 7E is used in conjunction with rough vacuum sensors like the 2A thermocouple vacuum gauge or 4A convection vacuum gauge.

Image7E Double Inverted Magnetron Cold CathodePart NumberPriceBuy
7E DI Magnetron Cold Cathode - 1” Straight
1” Straight2-2142-013$535.00
7E Double Inverted Magnetron Vacuum Gauge
NW25 (DN25 ISO-KF)2-2142-031$555.00
7E DI Magnetron Cold Cathode - NW40 (DN40 ISO-KF)
NW40 (DN40 ISO-KF)2-2142-032$565.00
7E DI Magnetron Cold Cathode - 2.75” CF (DN40 ISO-CF-F)
2.75” CF (DN40 ISO-CF-F)2-2142-052$575.00
Image7E Coaxial CablesPart NumberPriceBuy
10ft 7E/7F Coax Cable
10'2-9841-010$170.00
20ft 7E/7F Coax Cable
20'2-9841-020$180.00
35ft 7E/7F Coax Cable
35'2-9841-035$185.00
50ft 7E/7F Coax Cable
50'2-9841-050$190.00
Image7E Coaxial High Temp/200˚CPart NumberPriceBuy
7E/7F High Temperature Coax Cable
Custom Length, Max 300'2-9842-000$345.00

ImageReplacement PartsPart NumberPriceBuy
Replacement 7E Anode Assembly - Part Number: 2-7900-075
7E Anode Assembly2-7900-075$250.00
Replacement O-Ring for the 7E Cold Cathode: Part Number: 6-4210-260
O-Ring6-4210-260$4.15
Operating Range 1*10-8 Torr to 1*10-2 Torr
Analog Output Controller dependent
Supply Voltage Controller dependent
Mounting Orientation Any
Calibration Medium Dry air or nitrogen
Overpressure 150 psi
Analog Output Resolution Controller dependent
Operating Temperature 0 °C to 50 °C
Storage Temperature -20 °C to 70 °C
Bakeout Temperature 150 °C
Response Time ≤ 10 ms
Accuracy 1*10-7 Torr to 1*10-2 Torr: ± .2 decade

Analog Output Behavior

Televac vacuum pressure gauge cold cathode pressure gauge output graph, 7E, The Fredericks Company, 215 947 2500