Part Number: 2-2119-0XX and 2-2120-0XX
Our 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 gauge, the 4A Pirani 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, MM200, MC300, and MX4A.
Why would you choose the 4A convection vacuum gauge tube? An excellent question. Below is a list of some of the highlights of this vacuum transducer:
Televac 4A Convection Vacuum Gauge – Vacuum Pressure Gauge – Vacuum Sensor Features
- 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
| 4A Convection | Part Number | Price | Buy |
|---|---|---|---|
| 1/8” NPT Nickel-Plated Brass | 2-2119-001 | $115.00 | |
| NW16 (DN16 ISO-KF) Nickel-Plated Brass | 2-2119-016 | $150.00 | |
| NW25 (DN25 ISO-KF) Nickel-Plated Brass | 2-2119-025 | $155.00 | |
| 1/8” NPT Stainless Steel | 2-2120-001 | $190.00 | |
| NW16 (DN16 ISO-KF) Stainless Steel | 2-2120-030 | $195.00 | |
| NW25 (DN25 ISO-KF) Stainless Steel | 2-2120-031 | $195.00 | |
| 8-VCO Male Stainless Steel | 2-2120-040 | $200.00 | |
| 8-VCO Female Stainless Steel | 2-2120-041 | $200.00 | |
| 8-VCR Male Stainless Steel | 2-2120-042 | $200.00 | |
| 8-VCR Female Stainless Steel | 2-2120-043 | $200.00 | |
| 4-VCR Male Stainless Steel | 2-2120-044 | $200.00 | |
| 4-VCR Female Stainless Steel | 2-2120-045 | $200.00 | |
| 1.33” CF (DN16 ISO-CF-F) Stainless Steel | 2-2120-050 | $200.00 | |
| 2.75” CF (DN40 ISO-CF-F) Stainless Steel | 2-2120-052 | $205.00 |
| 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 | 1 to 10 mTorr (microns): ±1 mTorr (±1 microns) |
| (for MX4A, MX200) | 10 mTorr (microns) to 1000 Torr: ±10% of reading |
| Analog Output: ±5 mV | |
| Accuracy | 1 to 10 mTorr (microns): ±1 mTorr (microns) |
| (for MM200, MC300, MP4AR) | 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
 |  |  |  | |
| MX4A Convection | MX200 | MX200 EthernetIP | MC300 | |
| Measurement Range | 1*10-4 to 1000 Torr | 1*10-11 to 10,000 Torr | 1*10-11 to 10,000 Torr | 1*10-11 to 1000 Torr |
| Communications | RS-485 | RS-232/RS-485/USB | EthernetIP/USB | None |
| Analog Output | Configurable 0 to 10 V DC | 0 to 10 V DC (1 per sensor) | 0 to 10 V DC (1 per sensor) | 0 to 10 V DC (1 per sensor) |
| Programmable Set Points | 2 | 0, 4, or 8 | 0, 4, or 8 | 4 |
| Heat treating and vacuum furnaces | |
| Cryogenics and industrial gases | |
| Thin film deposition and coating processes | |
| Semiconductor | |
| E-beam welding | |
| Petrochemical | |
| Load-lock | |
| Pharmaceutical product processes | |
| Plasma coating/sputtering | |
| Cryogenic tanks/dewars | |
| Refilling gas cylinders | |
| Lighting/neon signs | |
| Chemical processing | |
| Textile | |
| Pharmaceutical products | |
| Processing vacuum packaging and transport | |