Televac 4A Convection Gauge

Televac 4A Convection (Pirani) Gauge – Reliable Vacuum Measurement from Atmosphere to Rough Vacuum

The Televac 4A Convection Gauge is a trusted, cost-effective vacuum sensor used to measure pressure from atmospheric levels down to around 10⁻³ Torr. Leveraging the convection-based Pirani sensing principle, it offers dependable, repeatable readings ideal for process control, vacuum vent monitoring, and pump-down cycle tracking in a variety of industrial and research environments.

Why Choose the 4A?

• Atmosphere-to-rough vacuum span: Covers wide pressure range from ~760 Torr down to ~10⁻³ Torr with a single gauge.
• Proven convection-Pirani technology: Simple, robust, and accurate detection based on gas thermal conductivity.
• Compact form: Lightweight and installable on small vacuum chambers or OEM components.
• Direct wiring: Easy integration with controllers supporting analog or Duragauge outputs (e.g., MX200 Controller).
• Low maintenance: No filaments to burn out—ideal for long-term process usage.

Applications Where 4A Excels

• Load-lock and vent cycle monitoring in semiconductor and thin film systems.
• Atmosphere-to-vacuum process control for vacuum packaging, freeze drying, and food technology applications.
• Rough vacuum ovens and furnace pressure tracking in materials processing.
• OEM systems that need lightweight, reliable pressure sensors without complexity.

Technical Features

• Pressure Range: Roughly atmospheric (~760 Torr) down to 10⁻³ Torr.
• Gauge Type: Convection (Pirani) thermal-conductivity sensor.
• Material & Mounting: Stainless-steel body with a standard flange—check model variant for KF/NW or other mount compatibility.
• Calibration: Typically air/N₂; apply correction factors for other gases as needed.
• Compatibility: Works with controllers such as Televac MX200 or simple analog readouts.

Advantages over Thermocouple (MX2A) or Wide-Range (CC10) Gauges

1. Broader upper range: Reads all the way up to atmosphere—wider than MX2A (~20 Torr max).
2. No active electronics: Passive sensor means fewer points of failure and long-term reliability.
3. Cost-effective for basic use: Excellent choice when precision beyond rough vacuum isn’t required.
4. Lightfoot print: Ideal for simple or space-constrained installations.

Integration Tips

• Pair for full-range coverage: Combine with a vacuum gauge like MX2A or CC10 to monitor medium to high vacuum regions.
• Use with a controller: Connect to the MX200 Gauge Controller for digital logging, set-point alarms, and multi-channel viewing.
• Install upright: Mount vertically on a clean, leak-tight port to avoid contamination and ensure accurate readings.

FAQs

What pressure range does the 4A cover?

From roughly atmospheric pressure (~760 Torr) down to about 10⁻³ Torr—excellent for full-range rough vacuum tracking.

Does it require power or electronics?

No active components in the gauge itself—readings come through your controller, which handles power and signal interpretation.

Does the gas type matter?

Yes, it’s calibrated for air/N₂. If using other gases, apply known correction factors to get accurate pressure readings.

Why Purchase from High Vac Depot?

High Vac Depot offers expert guidance and a full range of vacuum components—from simple convection gauges to advanced UHV sensors and controllers. We help you pick the right combination of vacuum gauges, gauge controllers, and accessories to optimize your system’s performance and uptime.

Request Assistance or a Quote

Need help selecting the right sensor or don’t know how to configure your vacuum monitoring system? Contact High Vac Depot—we’ll help tailor the right solution for your application.

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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 4A Convection Gauge DataSheet