Televac® 2A NASA Mini Thermocouple Vacuum Gauge Tube (Pirani)

Part Numbers: 2-2100-31, 2-2100-97

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 NASA Mini is a smaller, more robust version of our 2A thermocouple vacuum gauge tube originally designed for NASA. Our 2A NASA Mini 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 NASA Mini 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 NASA Mini vacuum pressure gauge can be operated by several Televac® controllers, including the MX200, MX200 EthernetIP, MV2A, Compact 2A, VacuGuard™, and B2A Portable.

Product Description
1/8” NPT Stainless Steel
1/8” NPT Stainless Steel
PN: 2-2100-31
4-VCR Male Stainless Steel
4-VCR Male Stainless Steel
PN: 2-2100-97

Operating Specifications

Operating Range 1*10-3 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
Mounting Orientation Any
Calibration Medium Dry air or nitrogen
Overpressure 125 PSIG
Operating Temperature -54 °C to 93 °C
Storage Temperature -54 °C to 93 °C
Bakeout Temperature 400 °C
Response Time ≤ 1 s
1 to 10 mTorr ±1 mTorr
10 to 100 mTorr ±10% of reading
100 to 1 Torr ±20% of reading
1 to 20 Torr Indication only
Analog Output ±10 mV

Physical Characteristics

Electrical Connections 4-Pin Mates w/Bendix PC-06A-8-4S SR
Weight 28 g (0.062 lbs)
Dimensions See datasheet
Space applications