Proximity Probes | 3300 XL 25 mm 330851-02-000-070-90-00-CN Bently Nevada

High-Temperature Steam Turbine Probe: 330851-02-000-070-90-00-CN

This 70mm unarmored probe with 9.0m PFA cable (8.8Ω±1.1 @25°C) operates continuously at 200°C (+250°C/24h peaks). Features M30x2 threading and GB/T 3836-2021 Ex certification for critical power generation applications.

Technical Architecture

• ▣ Model Decoding: 330851-02-000-070-90-00-CN
  • ├─ 02: M30x2 Thread
    • │ ├─ Pitch Accuracy: 2.000±0.004mm
    • │ ├─ Surface Finish: Ra 1.2μm (ISO 1302)
    • │ └─ Hardness: 88 HRB
  • ├─ 070: 70mm Case
    • │ ├─ Length Tolerance: ±0.15mm
    • │ └─ Concentricity: ≤0.04mm TIR
  • ├─ 90: 9.0m Cable
    • │ ├─ Bend Radius: 30mm (300 cycles @-20°C)
    • │ ├─ Capacitance: 58±2pF/m @1kHz
    • │ └─ Jacket Thickness: 0.45mm ±0.05mm
  • ├─ 00: Unarmored Design
    • │ └─ Weight Reduction: 22% vs armored version

Operational Limits

• ◉ Thermal Performance
  • │ ├─ Stability: ±0.3%FS/°C (-35°C→200°C)
  • │ ├─ Heat Rate: 8°C/min (250°C ramp-up)
  • │ └─ Thermal Cycling: 500 cycles (-55°C↔200°C)
• ◉ Mechanical Specs
  • │ ├─ Vibration: 10Grms (10-2000Hz XYZ axis)
  • │ ├─ Shock: 40g @11ms (IEC 60068-2-27)
  • │ └─ Torque Range: 68-163N·m (±2% calibration)
• ◉ Material Data
  • │ ├─ PEEK Tip
    • │ │ ├─ Dielectric Constant: 3.2 @1MHz
    • │ │ └─ Thermal Conductivity: 0.25 W/m·K
  • │ └─ 304 SST
    • │ │ ├─ Magnetic Permeability: <1.02 μ
    • │ │ └─ Salt Spray Resistance: 480h (ASTM B117)

Contact Information

For datasheets or custom configurations: [email protected]

Document Download: 3300-XL-25MM-Datasheet

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