Televac 7F Double Inverted Magnetron Cold Cathode Gauge

Televac 7F Double-Inverted Magnetron Cold-Cathode Gauge

The Televac 7F Double-Inverted Magnetron Cold-Cathode Gauge is an advanced ultra-high vacuum (UHV) sensor distinguished by its dual inverted magnetron design for enhanced sensitivity—reaching pressures down to approximately 10⁻¹⁰ Torr. With a rugged, filament-free construction, this gauge delivers fast, stable readings and long-term reliability—ideal for the most demanding vacuum applications in research, analytics, and accelerator systems.

Top Benefits of the 7F Gauge

• Extreme UHV sensitivity: Measures deeper into the UHV regime (~10⁻¹⁰ Torr), outperforming even the high-end 7E (~10⁻⁹ Torr).
• Fast, stable output: The double-inverted magnetron (“sandwich”) design promotes rapid discharge startup and smooth signal transitions.
• Filament-free operation: Eliminates concerns over burnout, contamination, or filament replacement required by ion gauges.
• Built for harsh environments: Heavy-duty stainless-steel body and electrode structure resist thermal cycling, bake-outs, and vibration stress.
• Controller compatibility: Integrates seamlessly with ignition-capable readouts like the Televac MX200 Gauge Controller and legacy Televac systems.

High-Sensitivity Applications

• Advanced UHV systems: Ideal for surface science, electron microscopy, and research-grade vacuum chambers.
• Beamline and synchrotron diagnostics: Precise vacuum measurement critical for maintaining beam integrity.
• Ion pump control loops: High-sensitivity monitoring enhances pump management and system stability.
• Mass spectrometry & analytical tools: Provides ultra-clean, repeatable vacuum diagnostics for high-precision instruments.

Key Technical Features

• Pressure Range: Approximately ~10⁻¹⁰ Torr to ~10⁻³ Torr (controller & system dependent).
• Gauge Type: Double-inverted magnetron cold-cathode (dual-tube) design.
• Construction: Rugged stainless-steel housing with precision electrode assembly.
• Operation: Requires external ignition voltage; stable discharge maintained by compatible controllers.
• Maintenance: Filament-free, low upkeep; occasional cleaning may help in harsh environments.

Cold-Cathode vs Ionization Gauges

1. No hot filaments: Reduces breakdown and burnout risks for stable long-term operation.
2. Excellent discharge consistency: Double-inverted magnetron supports reliable readings across pressure swings.
3. UHV capability without fragility: While ion gauges may reach ~10⁻¹¹ Torr, the 7F balances sensitivity with robustness ideal for demanding environments.

System Integration & Pairing

Use the 7F with an ignition-equipped controller such as the MX200 Gauge Controller, which provides discharge initiation, signal processing, and I/O support. For full-range vacuum coverage, combine with a CC10 Wide-Range Gauge or Convection Gauge to monitor higher pressures accurately.

Browse our vacuum gauges and gauge controllers for complementary components.

Usage Recommendations

• Pre-vacuum operation: Begin measurement at reduced pressure to preserve discharge stability and electrode longevity.
• Bake-out resistance: Designed to withstand high-temperature environments, ideal for UHV chamber prep.
• Maintain electrode cleanliness: Minor solvent cleaning may prolong optimal performance in dusty or reactive environments.

FAQs

How low can the 7F measure?

It measures to approximately ~10⁻¹⁰ Torr. The exact lower limit depends on system conductance and controller capabilities.

Is it high-maintenance?

No. This cold-cathode gauge is filament-free and robust—minimal maintenance required. Occasional cleaning may improve performance in challenging environments.

What controller do I need?

A controller capable of providing ignition voltage (like the Televac MX200) is necessary for operation. It supplies stable voltage and interprets the gauge signal accurately.

Why Choose High Vac Depot?

High Vac Depot offers tailored guidance for UHV vacuum measurement components. We provide a full suite of vacuum gauges, gauge controllers, and accessories—supporting reliable, high-precision vacuum systems with expert procurement and integration advice.

Talk to Our Experts or Request a Quote

Looking for pricing, system design help, or gauge/controller recommendations? Contact High Vac Depot—we’ll help configure and quote the right UHV sensor setup 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 7F Cold Cathode Gauge DataSheet

Televac Cleaning of Cold Cathode Gauges