INFICON BCG450-SD 353-557

Product Name: TripleGauge® Combined Vacuum Gauge (Bayard-Alpert / Pirani / Capacitance Diaphragm Sensor)

Product Description: Compact triple-technology integrated vacuum measuring gauge combining Bayard-Alpert hot ion sensor, Pirani convection-enhanced sensor and capacitance diaphragm sensor, measuring pressure across full range from atmospheric pressure down to ultra-high vacuum, replacing three separate vacuum sensors in vacuum process equipment.

Category:
Description

Technical Specifications: Measurement range: 5×10⁻¹⁰ mbar to 1500 mbar Vacuum flange: DN 25 ISO-KF Maximum allowed absolute pressure: 5 bar Operating ambient temperature: -20 °C to +70 °C Inner sensor volume: 24 cm³ Interface: SD serial digital interface Calibration chip: Removable on-board calibration memory chip

Functional Features: Gas-type-independent pressure reading at high-pressure range Pirani interlock protection prevents hot filament burnout Automatic Pirani adjustment minimizing manual intervention Removable calibration chip retains sensor calibration data Galvanically isolated internal electronics Automatic sensor fault detection and error reporting

Application Scenarios: Semiconductor vacuum processing, coating equipment, load-lock chambers, vacuum metallurgy, research laboratory high-vacuum systems, industrial vacuum process monitoring

Performance Parameters: Wide continuous pressure measuring span, fast pressure response, reproducible measurement accuracy, multi-sensor automatic range switching

Material Composition: Stainless-steel vacuum flange and housing parts, iridium-yttrium-oxide coated BA filament, molybdenum electrode structures, alumina ceramic insulators, nickel-iron alloy components, aluminum instrument housing

Structural Characteristics: Integrated compact monoblock gauge body, bottom vacuum flange connection, upper-side electrical connector port, internal stacked three-sensor assembly structure

Working Principle: Capacitance-diaphragm sensor measures near-atmosphere pressure independent of gas type; Pirani thermal-conductivity sensor covers medium-vacuum range; Bayard-Alpert hot-ion sensor measures high-vacuum / ultra-high-vacuum; internal logic automatically selects active sensor according to real-time pressure value and outputs unified pressure reading.

Installation Requirements: Mount vertically or within allowed inclination angle to vacuum chamber; implement reliable protective earth grounding; use conductive metal clamping ring for KF flange connection; avoid mechanical stress transfer to gauge body; keep gauge sensor volume free of contamination.

Usage Notes: Always wear clean lint-free gloves during handling vacuum-side components; avoid touching internal sensor elements by bare hands; do not subject gauge to pressure exceeding maximum rated absolute pressure; protect filament from sudden atmospheric exposure; perform regular calibration check according to process requirements.

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