Televac® 2A VacuMini Thermocouple Vacuum Gauge Tube (Pirani)

Part Numbers: 2-2100-102, 2-2100-102-01

Compatible With: MX200, MX200 EthernetIP, MV2A, Compact 2A, VacuGuard™, B2A Portable

Features and Benefits:

  • Compact, robust, contamination resistant vacuum transducer
  • Standard Pirani 1/8″ NPT flange/fitting
  • Weather capped vacuum transducer with gasket and tether
  • Drop-in vacuum pressure gauge replacement
  • Excellent customer support for vacuum transducers
  • Convection gauge filters available for highly contaminated environments

The Televac® 2A VacuMini is a commercial version of Televac®’s highly successful NASA 2A gauge. Our 2A VacuMini thermocouple vacuum gauge tube (also often called a Pirani or vacuum pressure gauge) is widely considered our most robust and contamination resistant low vacuum pressure gauge due to the Pirani filament design and operating temperature, and it’s simple to install because it can be mounted in any orientation.

The 2A VacuMini is roughly half the size and volume of traditional thermocouple vacuum gauge tubes. This thermocouple vacuum gauge’s primary limitation is that with all of our vacuum controllers, this thermocouple vacuum transducer will only read from 1*10-3 Torr (1 micron) to 20 Torr (20,000 microns), instead of all the way up to atmosphere (760 Torr).

This vacuum gauge also has slightly reduced accuracy over some parts of its operating range when compared to the 4A convection Pirani vacuum gauge. The 2A VacuMini vacuum pressure gauge can be operated by several Televac® controllers, including the MX200, MX200 EthernetIP, B2A Portable, Compact 2A, VacuGuard™, and MV2A.

Product Description
1/8" (0.125”) NPT Stainless Steel with Cap and Chain
PN: 2-2100-102
1/8" (0.125”) NPT Stainless Steel without Cap and Chain
PN: 2-2100-102-01

Replacement Parts

Product Description
Cap and Chain
Cap and Chain
PN: 6-4200-111

Operating Specifications

Operating Range 1*10-3 Torr to 20 Torr
Analog Output Controller-dependent
Analog Output Resolution Controller-dependent
Supply Voltage  Controller-dependent
Maximum Voltage 5 V
Maximum Power 55 mW
Maximum Filament Temperature 250 °C
Calibration Medium Dry air or nitrogen
Overpressure 250 psi
Operating Temperature -20 °C to 50 °C
Storage Temperature -40 °C to 60 °C
Bakeout Temperature 60 °C
Response Time ≤ 1 s
1 to 10 mTorr ±1 mTorr
10 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

Physical Characteristics

Electrical Connections 4-Pin; Mates w/Bendix PC-06A-8-4S SR
Weight without Tether 28 g (0.062 lbs)
Dimensions See datasheet

The VacuMini is ideally suited to applications where the vacuum vessel is located outdoors or in a physical environment that renders use of traditional thermocouple sensors impractical. Examples of such applications include:

  • Fixed and mobile bulk cryogenic storage and transport vessels
  • Vacuum jacketed gas delivery manifolds
  • Mechanical vacuum pumps and blowers
  • House vacuum systems