Cold cathode vacuum gauge

ionization

Product Overview
INNOVACERA supplies precision anode assemblies engineered for INFICON MPG400 / MPG401 cold cathode vacuum gauge repair and refurbishment. The assembly uses high-purity alumina ceramic insulation, precision metallization and vacuum brazing to ensure high-voltage insulation, vacuum compatibility and consistent electrical performance.

Technical Features

• Designed for high-voltage vacuum environments
• Precision electrode alignment for stable ionization
• High-voltage insulation rated for 2–4 kV DC operation
• Vacuum-compatible materials with low outgassing
• Hermetic ceramic-to-metal sealing via metallization and vacuum brazing
• Stable electrical characteristics for long service intervals
• Precision concentricity control to maintain field symmetry

Why the Anode Assembly Is Critical
The anode assembly controls the electric field and discharge behavior in a cold cathode vacuum gauge. Under 2–4 kV DC operation it establishes the ionization region; precision alignment and reliable insulation directly affect measurement accuracy, stability and overall gauge reliability.

Applications

• Vacuum gauge repair
• Vacuum gauge refurbishment
• Scientific instrumentation
• Vacuum measurement systems

Technical Specifications

• Compatible Models: INFICON MPG400 / MPG401
• Voltage Resistance: 2–4 kV DC
• Leak Rate: <1 × 10⁻⁹ mbar·L/s
• Joining Process: Ceramic metallization + vacuum brazing
• Operating Environment: High vacuum; electron/ion bombardment conditions
• Coaxial Accuracy: ≤0.5 mm

Materials and Construction

• Material: High-purity alumina ceramic insulation
• Joining: Precision metallization and vacuum brazing for hermetic ceramic-to-metal sealing
• Performance: Stable electrical behavior, long service life, precision concentricity control