Televac® 4A Convection Vacuum Gauge (Pirani)

Part Numbers: 2-2119-001, 2-2119-016, 2-2119-025, 2-2120-001, 2-2120-011, 2-2120-030, 2-2120-031, 2-2120-032, 2-2120-040, 2-2120-041, 2-2120-042, 2-2120-043, 2-2120-044, 2-2120-045, 2-2120-050, 2-2120-052

Compatible With: MX200, MX200 EthernetIP, MX4A

Features and Benefits:

  • Low cost Pirani vacuum pressure gauge
  • Compact, robust, contamination resistant vacuum transducer
  • Numerous fittings available (1/8″ NPT, NW25, NW40, CF40, among many others)
  • Drop-in vacuum pressure gauge replacement
  • Excellent customer support for vacuum transducers
  • Filters available for highly contaminated environments

The Televac® 4A convection gauge (also often called a Pirani or vacuum pressure gauge) is a fast, robust, contamination resistant, and high accuracy low vacuum pressure gauge due to the Pirani filament design. Note that by comparison to the 2A thermocouple vacuum gauge, the 4A Pirani vacuum gauge must be mounted vertically.

The 4A convection gauge will read from 1*10-3 Torr (1 micron) to 1000 Torr (1,000,000 microns, slightly above atmosphere) as opposed to the more limited range of the 2A with our vacuum controllers. It also has improved accuracy over the 2A, with several of our active gauges and controllers offering ±10% accuracy over the full operating range of the vacuum gauge. The 4A vacuum pressure gauge can be operated by several Televac® controllers, including the MX200, MX200 EthernetIP, and MX4A.

Product Description
1/8” NPT Nickel-Plated Brass
1/8” NPT Nickel-Plated Brass
PN: 2-2119-001
1/8” NPT Stainless Steel
1/8” NPT Stainless Steel
PN: 2-2120-001
1/2" Straight Stainless Steel
PN: 2-2120-011
NW16/KF16 Nickel-Plated Brass
NW16/KF16 Nickel-Plated Brass
PN: 2-2119-016
NW16/KF16 Stainless Steel
NW16/KF16 Stainless Steel
PN: 2-2120-030
NW25/KF25 Nickel-Plated Brass
NW25/KF25 Nickel-Plated Brass
PN: 2-2119-025
NW25/KF25 Stainless Steel
NW25/KF25 Stainless Steel
PN: 2-2120-031
NW40/KF40 Stainless Steel
NW40/KF40 Stainless Steel
PN: 2-2120-032
8-VCO Male Stainless Steel
8-VCO Male Stainless Steel
PN: 2-2120-040
8-VCO Female Stainless Steel
8-VCO Female Stainless Steel
PN: 2-2120-041
8-VCR Male Stainless Steel
8-VCR Male Stainless Steel
PN: 2-2120-042
8-VCR Female Stainless Steel
8-VCR Female Stainless Steel
PN: 2-2120-043
4-VCR Male Stainless Steel
4-VCR Male Stainless Steel
PN: 2-2120-044
4-VCR Female Stainless Steel
4-VCR Female Stainless Steel
PN: 2-2120-045
CF16/1.33" CF-F Stainless Steel
PN: 2-2120-050
CF40/2.75" CF-F Stainless Steel
PN: 2-2120-052
Vacuum Measurement Range 1*10-3 (1 micron, 1 mTorr) to 1000 Torr
(for MX200, MM200, MC300, MP4AR) 1*10-1 to 1*105 Pa
1*10-3 to 1000 mbar
Vacuum Measurement Range (MX4A) 1*10-4 (1 micron, 1 mTorr) to 1000 Torr
1*10-2 to 1*105 Pa
1*10-4 to 1000 mbar
Accuracy with MX4A, MX200
1 to 10 mTorr (microns): ±1 mTorr (±1 microns)
10 mTorr (microns) to 1000 Torr: ±10% of reading
Analog Output: ±5 mV
Accuracy with MM200, MC300, MP4AR
1 to 10 mTorr (microns): ±1 mTorr (microns)
10 mTorr (microns) to 1 Torr: ±10% of reading
1 to 100 Torr: ±20% of reading
100 to 1000 Torr: ±10% of reading
Analog Output: ±10 mV
Maximum Filament Temperature 250 °C
Mounting Orientation Vertical
Calibration Medium Dry air or nitrogen (N2)
Overpressure 150 PSI
Operating Temperature 0 °C to 50 °C
Storage Temperature -40 °C to 85 °C
Maximum Bakeout Temperature 200 °C (stainless steel)
120 °C (nickel-plated brass)
Response Time Controller dependent
Analog Output Characteristics Controller dependent
Analog Output Resolution Controller dependent
Vacuum Fittings 1/8″ NPT, NW16, NW25, 1.33″ CF, 2.75″ CF
See part numbers tab or datasheet for more
Electrical Connections Male octal connector
Weight (NW25 Flange) 150 g (0.33 lbs)
Height (NW25 Flange) 76 mm (3.0″)
Height (NW25 Flange) 31.7 mm (1.25″)
Additional Dimensions See datasheet for dimensional drawings

Analog Output Characteristics

Televac vacuum gauge convection gauge pirani vacuum transducer
Heat treating and vacuum furnaces
Cryogenics and industrial gases
Thin film deposition and coating processes
E-beam welding
Pharmaceutical product processes
Plasma coating/sputtering
Cryogenic tanks/dewars
Refilling gas cylinders
Lighting/neon signs
Chemical processing
Pharmaceutical products
Processing vacuum packaging and transport