Televac MP7ER Cold Cathode

2-7950-XYY and 2-7970-XYY

The Televac MP7ER Active Gauge utilizes an easily replaceable Televac 7E double inverted magnetron cold cathode vacuum sensor. It has a variety of features including a wide range of measurement from 1×10-8 Torr to 1×10-2 Torr, a programmable set point, a factory settable analog output, and an LED display. This unit indirectly measures absolute pressure by ionizing gas in the presence of a magnetic field. Unlike hot ion sensors, this unit is resistant to inrushes of gas. The design allows for easy disassembly enabling quick cleaning of the sensor and extended use.

The Televac MP7ER Features

  • Cleanable sensor for extended use
  • Compact design
  • Mountable in any orientation
  • Minimal stray magnetic field
  • Superior unit-to-unit performance
  • Excellent customer support
  • Designed and manufactured in the United States of America
Operating Range 1×10-8 Torr to 1×10-2 Torr
Communications N/A
Analog Output 0 V to 10 V DC
Programmable Set Points 1
Set Point Type Relay
Supply Voltage 24 V DC
Maximum Power 6 W
Calibration Medium Dry air or nitrogen
Overpressure 150 psi
Digital Output Resolution 2 significant digits with exponent
Operating Temperature 0 °C to 50 °C
Storage Temperature -20 °C to 60 °C
Bakeout Temperature 150 °C (electronics removed)
Display Readable Distance 3 m (10 ft)
1×10-7 Torr to 1×10-2 Torr ±0.2 decade
Analog Output ±5 mV
MP7ER Cold Cathode Active Gauge Logarithmic Output
10-8 to 10-2 (2 to 8 VDC) X = 1
10-6 to 10-2 (0 to 10 V DC) X = 2
10-8 to 10-2 (3 to 9 V DC) X = 3
MP7ER Cold Cathode Active Gauge Part Number
1” Straight Stainless Steel 2-7950-X13
NW16 (DN16 ISO-KF) Stainless Steel 2-7950-X30
NW25 (DN25 ISO-KF) Stainless Steel 2-7950-X31
NW40 (DN40 ISO-KF) Stainless Steel 2-7950-X32
2.75” CF (DN40 ISO-CF-F) Stainless Steel 2-7950-X52
Replacement 7E Sensors Part Number
1” Straight 2-2142-013
NW25 (DN25 ISO-KF) 2-2142-031
NW40 (DN40 ISO-KF) 2-2142-032
2.75” CF (DN40 ISO-CF-F) 2-2142-052
Replacement Parts Part Number
7E Anode Assembly 2-7900-075
D-Sub 9 Pin Cable (flying leads terminated) Part Number
10 ft (3 m) 2-9852-010
20 ft (6 m) 2-9852-020
35 ft (11 m) 2-9852-035
50 ft (15 m) 2-9852-050
Wall Power Supply  Part Number
Type A (USA); 100-240 V AC/47-63 Hz 2-7900-093

MX4A Active Gauge – The MX4A utilizes an easily replaceable Televac 4A convection vacuum sensor. It has a variety of features including a wide range of measurement from 1 × 10-4 Torr up to 1000 Torr, RS-485 communications, two programmable set points, and a selectable analog output. The bright OLED display makes it easy to read from a distance. Options can be set from four capacitive touch controls located on the top of the unit or through RS-485 communications. The extensive selection of fittings, simplicity of use, ease of sensor replacement, and competitive cost make this unit an excellent choice for a variety of vacuum applications.

MP7FR Active Gauge – This gauge measures high vacuum from 1 × 10-11 Torr 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.