330303-060-50-90-01-00 Bently Nevada 3300 XL High Temp Probe

Product Engineering Overview

The 330303-060-50-90-01-00 stands as the ultimate thermal-resilient solution within the Bently Nevada 3300 XL series. Engineered for extreme environments reaching up to 350°C, this high-temperature proximity probe utilizes a high-purity ceramic tip and 316L stainless steel housing. The smooth case design is specifically intended for applications where thermal expansion requires a non-threaded interface to prevent mechanical seizing.

Technical Specifications Matrix

• Brand: Bently Nevada
• Model: 330303-060-50-90-01-00
• Series: 3300 XL High Temperature System
• Extreme Thermal Performance
  • Operating Temperature Range: -34°C to +350°C (-30°F to +662°F)
  • Incremental Scale Factor (ISF): 3.94 V/mm (100 mV/mil) ±9.65%
  • Linear Range: 4.0 mm (160 mils)
  • Thermal Stability: ISF remains within ±30% at maximum 350°C
• Material Science & Build
  • Probe Tip: High-grade Ceramic
  • Case Material: AISI 316L Stainless Steel (SST)
  • Hardline Cable: 117 g/m rigid high-temperature construction
  • Armor Option: Flexible Stainless Steel protective sleeve
• Measurement Target Parameters
  • Minimum Target Size: 30.5 mm (1.2 in) diameter
  • Recommended Minimum Shaft Diameter: 152 mm (6.0 in)
  • Frequency Response: 0 to 6 kHz (+0, -3 dB typical)

Configuration Logic Tree

• 330303 3300 XL High Temperature Probe (Smooth Case)
  • -060 Overall Case Length
    • 6.0 inch (Smooth body for depth-adjustable mounting)
  • -50 Hardline Length Option
    • 5.0 meters (16.4 feet) of rigid hardline cable
  • -90 Total Length Option
    • 9.0 meters (30 feet) total system (Extension cable included)
  • -01 Extension Cable Armor
    • With stainless steel armor for maximum mechanical protection
  • -00 Agency Approval Option
    • Standard version (Not required)

Global PLC Spare HUB's Insight

The 330303-060-50-90-01-00 is a "Survivalist" sensor designed for the hottest sections of gas turbines and steam valves. In engineering practice, standard PPS-tip probes fail rapidly above 177°C; the ceramic tip of the 330303 ensures zero carbonization or melting at 350°C. The smooth case design is vital for large turbines where the casing and the probe expand at different rates—it allows for sliding adjustment without shearing threads. Its diagnostic advantage is the 160-mil linear range, providing a wider window to monitor significant axial thermal growth during startup cycles.

Typical Application & Diagnostic Strength

• Gas Turbine Exhaust: Monitoring radial vibration in high-heat zones.
• Steam Valve Feedback: High-temperature stroke and position sensing.
• Thermal Growth Tracking: Measuring rotor-to-stator expansion during machine ramp-up.
• Mechanical Protection: Stainless steel armor (Option -01) shields the signal from high-velocity steam or oil spray.

Logistics & Warranty Terms

• Product Condition: 100% Brand New & Original in Factory Packing.
• Warranty: 12-Month Comprehensive Quality Assurance.
• Shipping Lead Time: Dispatch within 24-48 hours.
• Carrier Partners: Rapid global delivery via FedEx, UPS, and DHL.

Expert FAQ & Purchase Guidance

• Why is the Scale Factor 100 mV/mil instead of the standard 200 mV/mil?
  To accommodate the extreme temperature range and the larger 160-mil linear range, the 330303 utilizes a different coil density. This requires a dedicated Proximitor calibrated for 3.94 V/mm.
• Can I bend the 5.0m hardline cable to fit tight spaces?
  The hardline is constructed of semi-rigid stainless steel. While it can be bent to follow a mounting path, it has a large minimum bend radius. Over-bending or kinking will permanently damage the internal insulation.
• Does the "Smooth Case" require a special mounting bracket?
  Yes. Unlike threaded probes that lock into a tapped hole, the 330303-060-50-90-01-00 is typically held in place by a compression fitting or a clamping block to allow for axial adjustment.
• What happens if the probe temperature exceeds 350°C?
  Beyond 350°C, the internal brazing and insulation materials reach their physical limit. This can lead to a "short to case" or a permanent shift in the DC bias voltage, rendering the vibration data inaccurate.
• How do I select between different total length options (-50, -70, -90)?
  Select the total length based on the distance from the machine casing to your junction box. Note that for the 330303, the extension cable is part of the tuned circuit and is included in the total length specification.

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