TELEVAC 2A Thermocouple Vacuum Sensor

The TELEVAC 2A thermocouple sensor has a measurement range from 1 × 10-4 Torr up to 1000 Torr. It indirectly measures absolute pressure by detecting the thermal dissipation of a filament. The 2A can be operated by several TELEVAC controllers, including the MM200, MC300, MX2A, B2A, Compact 2A, Vacuguard, and MV2A.

The TELEVAC 2A Thermocouple Features

  • Competitively priced
  • Compact and robust design
  • Numerous fittings available
  • Excellent resolution and repeatability
  • Minimal sensor-to-sensor output variation
  • Excellent customer support
  • Designed and manufactured in the USA
Operating Range 1 × 10-3 Torr to 20 Torr; 1 × 10-4 Torr to 1000 Torr (MX2A)
Analog Output Controller dependent
Maximum Voltage 5 V
Maximum Power 55 mW
Maximum Filament Temperature 250 °C
Mounting Orientation
1 × 10-3 Torr to 20 Torr Any
20 Torr to 1000 Torr Vertical
Calibration Medium Dry air or nitrogen
Overpressure 150 psi
Analog Output Resolution Controller dependent
Operating Temperature 0 °C to 50 °C
Storage Temperature -40 °C to 85 °C
Maximum Bakeout Temperature 120 °C (brass) 200 °C (stainless steel)
Response Time ≤1 s
Accuracy
1 mTorr to 10 mTorr ±1 mTorr
10 mTorr to 100 mTorr ±10% of reading
100 mTorr to 1 Torr ±20% of reading
1 Torr to 20 Torr Indication only
Analog Output ±10 mV
Accuracy (MX2A)
0.1 mTorr to 1 mTorr 0.1 mTorr resolution
1 mTorr to 10 mTorr ±1 mTorr
10 mTorr to 10 Torr ±10% of reading
10 to 100 Torr ±30% of reading
100 Torr to 1000 Torr ±10% of reading
Analog Output ±10 mV

Analog Output Behavior



2A Sensor 1/8” NPT Nickel-Plated Brass2-2100-10
2A Sensor Stainless Steel 1/8” NPT2-2126-001
2A Sensor Stainless Steel NW16 (DN16 ISO-KF)2-2126-030
2A Sensor Stainless Steel NW25 (DN25 ISO-KF)2-2126-031
2A Sensor Stainless Steel 8-VCO Male2-2126-040
2A Sensor Stainless Steel 8-VCO Female2-2126-041
2A Sensor Stainless Steel 8-VCR Male2-2126-042
2A Sensor Stainless Steel 8-VCR Female2-2126-043
2A Sensor Stainless Steel 4-VCR Male2-2126-044
2A Sensor Stainless Steel 4-VCR Female2-2126-045
2A Sensor Stainless Steel 1.33” CF (DN16 ISO-CF-F)2-2126-050
2A Sensor Stainless Steel 2.75” CF (DN40 ISO-CF-F)2-2126-052

MX2A Active Thermocouple Gauge – This gauge utilizes an easily replaceable TELEVAC 2A thermocouple 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.

4A Convection Sensor – The 4A convection sensor has a measurement range from 1 × 10-4 Torr up to 1000 Torr. The sensor features a rapid response time when compared to typical thermal sensors. It indirectly measures absolute pressure by detecting the thermal dissipation of a filament. The 4A can be operated by several TELEVAC controllers, including the MM200, MC300, and MX4A.

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.