Televac MX4A Active Convection Pirani Gauge

Televac MX4A Active Convection (Pirani) Gauge

The Televac MX4A Active Convection (Pirani) Gauge is a smart, compact vacuum sensor that measures pressures from 1×10⁻³ Torr up to 1000 Torr, making it perfect for a wide range of applications—from rough vacuum to low atmospheric pressure. Its built-in electronics deliver a linear 0–10 V analog output, enabling plug-and-play integration with controllers, PLCs, and data acquisition systems without the need for a separate readout unit.

Key Advantages

• Wide pressure span: Covers rough to near-atmospheric pressure (≈ 10⁻³ to 1000 Torr) with one gauge.
• Active design: No external readout required—built-in electronics simplify installation and reduce panel space.
• Convection Pirani principle: Reliable, repeatable pressure sensing across varied vacuum systems.
• 0–10 V output: Easily integrates into PLCs, MX200 controllers, or DAQ systems.
• Durable construction: Stainless-steel body with standard NW25/KF25 flange for robust and clean integration.

Typical Applications

• Drying ovens and vacuum furnaces used in heat treatment or bake cycles.
• Coating and vacuum packaging chambers that require control from rough to atmospheric levels.
• Freeze-dryers and research platforms in pharma, food tech, and process R&D.
• OEM vacuum systems where compactness and plug-and-play simplicity are valued.

Technical Specifications

• Measurement Range: Approximately 1×10⁻³ to 1000 Torr.
• Output: 0–10 V analog, compatible with automation gear.
• Gas Calibration: Air/N₂ (use correction factors for other gases).
• Mounting Specs: NW25/KF25 flange standard for vacuum connections.
• Material: Stainless-steel housing ensures durability and cleanability.
• Compatibility: Integrates seamlessly with MX200 Controller as part of multi-gauge systems.

Why Use Convection (Pirani) Technology?

Convection Pirani gauges measure pressure based on thermal conductivity flow and are known for:

1. Wide-range coverage: Ideal for systems that span from vacuum to near atmospheric pressure.
2. Cost-efficiency: Reliable, simple, and low-maintenance compared to more complex gauge types.
3. Compact footprint: Built-in electronics reduce control cabinet clutter.

System Integration & Pairing

Want full-range vacuum control? Pair the MX4A with:

• CC10 Wide-Range Gauge for pressures down to 1×10⁻⁸ Torr.
• 7B Cold Cathode Gauge for high-vacuum precision.
• MX2A Thermocouple Gauge for rough vacuum specificity.

Best Practices

• Install vertically: Position the sensor perpendicular to flow to prevent buildup and maximize accuracy.
• Use backing sensors: For readings above ~100 Torr, a capacitance diaphragm or convection gauge helps maintain calibration.
• Routine calibration: Match performance to process requirements—calibrate annually or in line with SOPs.

Common FAQs

What is its pressure range?

An approximately 1×10⁻³ to 1000 Torr span—ideal for tracking processes across vacuum to ambient conditions.

Does it need a controller?

No external controller is needed. The gauge has built-in electronics and outputs a direct 0–10 V signal for your system, though you can integrate it into an MX200 controller for centralized monitoring.

Is it gas-sensitive?

Yes—calibrated for air/N₂. For accurate readings with other gases, apply the appropriate correction factor.

Why Buy from High Vac Depot?

High Vac Depot is a trusted supplier of industrial vacuum components. We offer a full line of vacuum gauges, gauge controllers, and vacuum pumps. Our team helps match the right technology (convection, thermocouple, cold-cathode, or wide-range) to your process needs—maximizing uptime and accuracy.

Ready to Specify?

Want help building a multi-gauge vacuum system? Explore our MX200 Gauge Modules, review our Gauge Controllers, or contact High Vac Depot for a custom configuration and quote.

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Additional information

Brand

Televac

Fredericks’ Televac® and ETI vacuum measurement brands offer the most innovative and proven vacuum technology on the market.

Televac MX4a Convection Pirani Gauge DataSheet

Televac MX4A Convection Pirani Gauge Operation Manual