Televac 2A Thermocouple Passive Vacuum Gauge
Starting at: $120.00
Televac 2A Thermocouple Passive Vacuum Gauge
Televac 2A 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 thermocouple vacuum pressure gauge tube’s primary limitation is that with all of our vacuum controllers, this thermocouple vacuum pressure gauge 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 pressure gauge also has slightly reduced accuracy over some parts of its operating range when compared to the 4A convection Pirani vacuum gauge. The 2A vacuum pressure gauge can be operated by several Televac controllers, including the MX200, MM200, MC300, MX2A, B2A, Compact 2A, Vacuguard, and MV2A. With the MX2A, the full measurement range from 1*10-3 Torr (1 micron) to 1000 Torr (1,000,000 microns) is available.
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Description
Televac 2A Thermocouple Passive Vacuum Gauge
Our 2A 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 thermocouple vacuum pressure gauge tube’s primary limitation is that with all of our vacuum controllers, this thermocouple vacuum pressure gauge 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 pressure gauge also has slightly reduced accuracy over some parts of its operating range when compared to the 4A convection Pirani vacuum gauge. The 2A vacuum pressure gauge can be operated by several Televac controllers, including the MX200, MM200, MC300, MX2A, B2A, Compact 2A, Vacuguard, and MV2A. With the MX2A, the full measurement range from 1*10-3 Torr (1 micron) to 1000 Torr (1,000,000 microns) is available.
Televac 2A Passive Thermocouple Vacuum Gauge
The Televac 2A Thermocouple Gauge is a proven, passive vacuum measurement instrument that covers pressures from approximately 1×10⁻³ Torr up to 1 Torr. Its simple thermocouple/Pirani sensing mechanism and rugged design make it an economical, reliable choice for rough-vacuum monitoring in industrial, laboratory, or OEM environments.
Why Choose the 2A Gauge?
- Cost-effective and dependable: No electronics built into the gauge—just durable sensing, making it inexpensive to deploy and maintain.
- Compact form factor: Small and lightweight, easy to mount in restricted spaces or integrate into existing systems.
- Steady performance: Thermocouple thermal-conductivity sensing provides reliable, repeatable readings in the rough-vacuum regime.
- No power requirement at the probe: Paired with a compatible controller—such as the Televac MV2A Controller or Televac MX200 Controller—for display and signal outputs.
Ideal Applications
- Vacuum ovens and furnaces that require simple monitoring of the rough-vacuum zone.
- Load-locks and vent systems where back-of-chamber pressure tracking is needed.
- Lab and OEM setups with tight spaces or minimal instrumentation needs.
- Process control environments where the rough-vacuum range is sufficient and cost matters.
Technical Features
- Measurement Range: ~1×10⁻³ Torr to ~1 Torr.
- Gauge Type: Passive thermocouple (Pirani) sensor—no onboard electronics.
- Mounting: Standard flange—check variant for KF/NW or other compatibility.
- Calibration: Typically air/N₂; correction factors needed for other gases.
- Compatibility: Requires external controller (MV2A or MX200) for readout and output.
Passive vs. Active Gauges
- Lower cost but needs a controller: Passive 2A gauge is cheaper, but you must supply external electronics.
- Less clutter at the probe: No power or wiring on the gauge head—ideal when clean lines are required.
- Simpler design: More robust to harsh environments, but lacks the convenience of plug-and-play active models.
System Integration Recommendations
- Pair with a solid controller: Use with MV2A for a simple analog readout, or MX200 for multi-gauge functionality and digital outputs.
- For broader range coverage: Combine with medium- and high-vacuum sensors like MX4A or MX7B.
- Install cleanly: Use a vertical, clean mounting port to ensure accurate readings and easy maintenance.
FAQs
What is its pressure range?
Approximately 1×10⁻³ Torr to 1 Torr, making it ideal for monitoring near-rough vacuum.
Does it have power built-in?
No—it’s a passive gauge. You need an external controller like the MV2A or MX200 to get readings.
Can it be used with mixed gas environments?
Yes—but keep in mind it’s calibrated for air/N₂. You’ll need to apply gas-specific correction factors for accurate readings.
Why Buy from High Vac Depot?
High Vac Depot offers expert guidance on vacuum measurement—from simple passive gauges like the 2A to full-range systems. We help you pick the right vacuum gauge or controller combination, ensuring stable operation, accurate data, and seamless integration.
Need Technical Help or Pricing?
Want advice on building a vacuum sensing system or getting a quote? Contact High Vac Depot—we’ll guide you through selection, compatibility, and best installation practices.
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Additional information
| Weight | N/A |
|---|---|
| Televac 2A | 1/2" Straight Stainless Tube, 1/2" VCO Female Stainless, 1/2" VCO Male Stainless, 1/2" VCR Female Stainless, 1/2" VCR Male Stainless, 1/4" VCR Female Stainless, 1/4" VCR Male Stainless, 1/8" NPT Nickel-plated Brass, 1/8" NPT Stainless Tube, 3/8" Straight Nickel-plated Brass Tube, CF1.33" Stainless, CF2.75" Stainless, KF16 Nickel-plated Brass, KF16 Stainless, KF25 Nickel-plated Brass, KF25 Stainless, KF40 Stainless |
Brand
Televac
