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ALCATEL FA111
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HIMA F3501030 982200416
HIMA F3501030 982200416
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CCC FAN-10-2
CCC FAN-10-2

ALCATEL FA111

Product Name: Cold Cathode Penning Vacuum Gauge (Vacuum Meter)
Product Introduction: The ALCATEL FA111 is a cold cathode ionization gauge designed for measuring medium to high vacuum levels in industrial and scientific vacuum systems, operating without heated filaments to enhance durability.
Category:
Description
Technical Specifications:
  • Model: FA111
  • Manufacturer: Alcatel (now Pfeiffer Vacuum / ALE International heritage)
  • Measurement Principle: Cold Cathode (Penning Discharge)​
  • Measuring Range: 1×10⁻² mbar​ to 1×10⁻⁷ mbar​
  • Output Signal: 0–10 V​ linear analog, Relay nodes (alarm)
  • Ignition Voltage: 3.3 kV​ pulse start
  • Operating Temperature: -10°C​ to +50°C​
  • Interface Flange: KF, CF​ (DN16/DN25/DN40 options)
  • Stability/Life: >80,000 hours​ (40°C ambient)
  • Accuracy: Dependent on calibration; typical ±30%​ (ionization gauge characteristic)
  • Compliance: CE
Functional Features:
  • Filamentless: No hot cathode; immune to burn-out on atmospheric exposure.
  • Temperature Compensation: Internal circuit compensates ambient drift.
  • Alarm Relays: Adjustable setpoints for pump-down/vent cycles.
Performance Parameters:
  • Ignition Pressure: Typically <5×10⁻² mbar​ (auto-start)
  • Discharge Current: Proportional to pressure (logarithmic conversion).
Material Composition:
  • Gauge Body: Stainless Steel (304/316L) with ceramic insulators
  • Electrodes: Nickel or Titanium coated anode/cathode
  • Cable: Shielded twisted pair for 0-10V​ output
Structural Features:
  • Form: Cylindrical gauge head with flange mount.
  • Magnet: Permanent magnet assembly surrounding discharge chamber.
Working Principle:
A high-voltage DC potential (3.3 kV) between anode and cathode in a magnetic field causes residual gas molecules to ionize. The resulting ion current is proportional to gas density (pressure). Electronics linearize the logarithmic current response and output 0-10V​ corresponding to 10⁻² to 10⁻⁷ mbar.
Advantages:
  • Robust against frequent vent/evac cycles (no filament failure).
  • Low maintenance; long MTBF in continuous vacuum.
  • Direct 0-10V​ simplifies PLC integration.
Applicable Industries:
Semiconductor (PVD/CVD), Vacuum Coating, Thin Film Solar, Analytical Instruments (Mass Spec), Research Accelerators.
Model Series: Alcatel FA111, FA211 (dual channel), AS101 (Pirani combo).
Installation Requirements:
  • Mount on clean vacuum flange (KF-CF) with metal gasket (CF) or O-ring (KF).
  • Avoid line-of-sight to sputtering/gas flow to prevent electrode coating.
  • Shield cable separately from high-power RF/plasma lines.
Usage Precautions:
  • Do not apply 3.3 kV​ ignition if pressure > 10⁻¹ mbar​ for extended periods (arcing risk).
  • Periodically re-calibrate against capacitance manometer for critical processes.
  • Ensure earth ground of gauge body is < 1Ω​ to prevent HV leakage.
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