Televac MX2A Active Thermocouple Pirani Gauge
$760.00
Televac MX2A Active Thermocouple Pirani Gauge
The Televac MX2A Active Vacuum Gauge (also called a thermocouple vacuum gauge, analog or digital vacuum gauge, or Pirani gauge) utilizes an easily replaceable Televac 2A thermocouple gauge. This vacuum gauge has a variety of features including a pressure measurement range from 1*10-4 Torr up to 1000 Torr, RS-485 communications, two programmable set points, and a selectable analog vacuum gauge output.
The bright OLED digital vacuum gauge display makes it easy to read from a distance. Options on this Pirani gauge can be set from four touch controls on the top of the unit or through RS-485 communications (or EthernetIP if you add in an EthernetIP gateway). This vacuum gauge offers an extensive selection of fittings, simple use, ease of sensor replacement, and low cost making it an excellent choice for a variety of vacuum applications.
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Description
Televac MX2A Active Thermocouple Pirani Gauge
Televac MX2A Active Thermocouple Vacuum Gauge (Pirani)The Televac MX2A Active Vacuum Gauge (also called a thermocouple vacuum gauge, analog or digital vacuum gauge, or Pirani gauge) utilizes an easily replaceable Televac 2A thermocouple gauge. This vacuum gauge has a variety of features including a pressure measurement range from 1*10-4 Torr up to 1000 Torr, RS-485 communications, two programmable set points, and a selectable analog vacuum gauge output.
The bright OLED digital vacuum gauge display makes it easy to read from a distance. Options on this Pirani gauge can be set from four touch controls on the top of the unit or through RS-485 communications (or EthernetIP if you add in an EthernetIP gateway). This vacuum gauge offers an extensive selection of fittings, simple use, ease of sensor replacement, and low cost making it an excellent choice for a variety of vacuum applications.
Televac MX2A Active Thermocouple Pirani Gauge
The Televac MX2A Active Thermocouple Pirani Gauge is a compact, robust vacuum measurement device engineered for accurate low-to-medium vacuum monitoring. Covering a range from 1×10-3 Torr to 20 Torr, the MX2A is ideal for applications where reliable readings at rough and process vacuum levels are essential. Its built-in electronics make it a true “active gauge”—delivering a 0–10 V linear analog output directly to your controller, PLC, or data acquisition system without requiring a separate readout box.
Top Benefits
- Wide measurement range: 1×10-3 to 20 Torr, covering rough and process vacuum regimes.
- Compact active design: Integrated electronics eliminate bulky controllers; outputs go straight to your system.
- Thermocouple Pirani sensing: Proven, cost-effective method for stable and repeatable vacuum measurement.
- 0–10 V analog output: Easy integration into DAQ, PLCs, or MX200 controller systems.
- Rugged build: Stainless-steel body with NW/KF25 flange for durable, straightforward installation.
- Plug-and-play integration: Works seamlessly with Televac MX200 Gauge Controller for multi-gauge setups.
Applications
The MX2A is widely used across industries where low and medium vacuum monitoring is required:
- Vacuum ovens and furnaces for heat treatment and metallurgy.
- Coating systems such as sputtering and evaporation chambers.
- Freeze drying and packaging equipment in food, pharma, and research labs.
- General R&D setups that need reliable rough-vacuum readings without complex controllers.
Technical Highlights
- Measurement Range: 1×10-3 to 20 Torr.
- Output: 0–10 V linear analog, scalable for automation systems.
- Mounting: NW25/KF25 flange.
- Gas Type: Calibrated for air/N₂ (can be applied to similar gases with correction factors).
- Construction: Stainless-steel body for long life.
- Compatibility: Plug directly into MX200 controllers or other readout/automation systems.
Why Thermocouple (Pirani) Technology?
Thermocouple Pirani gauges measure pressure based on thermal conductivity of gases—a proven method for rough vacuum. The MX2A provides:
- Low cost of ownership: Simple design and long sensor life reduce replacement expenses.
- Stable, repeatable readings: Reliable for process monitoring where high-precision UHV is not needed.
- Compact and active: Outputs data directly without requiring bulky controllers.
Pairing with Other Televac Gauges
For full-range vacuum measurement, combine the MX2A with:
- Televac CC10 Active Wide-Range Gauge for pressures down to 1×10-8 Torr.
- Televac 7B Cold Cathode Gauge for high-vacuum monitoring.
- Televac Convection Gauges to cover atmosphere to rough vacuum.
Best Practices
- Use with backing gauges: For accuracy above ~1 Torr, pair with a convection or diaphragm gauge.
- Mount properly: Install vertically on a clean port to avoid contamination from condensables.
- Calibrate periodically: Factory calibration is stable, but check against a reference for long-term accuracy.
FAQs
What is the measurement range of the MX2A?
Approximately 1×10-3 to 20 Torr, ideal for low and medium vacuum applications.
Do I need a separate controller?
No. The MX2A is an active gauge with its own electronics, outputting 0–10 V directly. However, it can be paired with the MX200 for centralized multi-gauge monitoring.
Is it gas dependent?
Yes. Like all Pirani-style gauges, readings vary with gas type. It’s calibrated for air/N₂. Use correction factors for other gases.
Why Buy from High Vac Depot?
High Vac Depot supplies vacuum gauges, controllers, and vacuum pumps for industrial and research systems. Our team will guide you in selecting the right gauge technology—thermocouple, convection, cold-cathode, or wide-range—to match your process needs and ensure accurate, reliable results.
Get Expert Help
Ready to integrate the Televac MX2A into your system? Contact High Vac Depot for technical guidance, system configuration, and a tailored quote.
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Brand
| Operating Range | 1×10-4 Torr to 1000 Torr |
| Communications | RS-485 |
| Analog Output | 7 selectable 0 V to 10 V |
| Programmable Set Points | 2 |
| Set Point 1 | Open collector |
| Set Point 2 | Relay |
| Supply Voltage | 22 V to 26 V DC |
| Maximum Power | 8 W |
| Calibration Medium | Dry air or nitrogen |
| Overpressure | 150 psi |
| Digital Output Resolution | 2 significant digits with exponent |
| Analog Output Resolution | 16 bits |
| Operating Temperature | 0 °C to 50 °C |
| Storage Temperature | -20 °C to 60 °C |
| Bakeout Temperature | |
| Brass (P/N: 2-8910-110) | 100 °C (electronics removed) |
| Stainless (P/N: All Others | 200 °C (electronics removed) |
| Response Time | ≤ 2 s |
| Display Readable Distance | 3 m (10 ft) |
| Accuracy | |
| 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 Torr to 100 Torr | ±30% of reading (vertical mount) |
| 100 Torr to 1000 Torr | ±10% of reading (vertical mount) |
| Analog Output | ±10 mV |












