Product Overview
When turbine or compressor bearings operate above 200°C, standard proximity probes fail. The Bently Nevada 330301-000-011-20-90-00-05 3300 XL High Temperature Probe provides precise shaft vibration and position measurements in environments reaching 350°C. This probe replaces older 3300 series sensors with improved ceramic tip durability and extended cable reach.
Technical Specifications
The Bently Nevada 330301-000-011-20-90-00-05 delivers consistent performance under extreme conditions. Key parameters include:
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Incremental Scale Factor (ISF): 3.94 V/mm (100 mV/mil) ±9.65% including interchangeability error over the full 4.0 mm linear range.
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Deviation from Straight Line (DSL): Less than ±78 µm (±3.1 mils) ensuring exceptional linearity.
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Frequency Response: 0 to 6 kHz (+0, -3 dB) with up to 305 meters of field wiring.
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Operating Temperature: Probe tip withstands -34°C to +350°C, making it ideal for high-temperature applications.
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Probe Resistance: Center conductor to outer conductor resistance (RpROBE) is 5.82 ohms for 2.0 m probe length.
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Physical Construction: Ceramic probe tip, AISI 316L stainless steel case, and included extension cable (9.0 m total length).
Installation & Setup Guidance
Mount the 330301-000-011-20-90-00-05 using the 3/4-16 UNF threads into a suitable target. Ensure the unthreaded length (0 in) and case length (1.1 in) match clearance requirements. Use the included 9.0 m extension cable for flexible routing. Calibrate using the ISF value of 3.94 V/mm for accurate gap voltage measurement.
Maintenance & Reliability
High-temperature probes face thermal cycling stress. Inspect the ceramic tip and stainless steel case for cracks annually. Verify cable connections and resistance values per specifications. The probe cable weight is 117 g/m plus 12 g/cm of case; ensure proper support to avoid strain.
Selection Guide & Purchasing Advice
Verify compatibility with your existing Bently Nevada monitoring system. The 330301-000-011-20-90-00-05 includes multiple approvals (option 05) and no stainless steel armor on the extension cable. For replacement of older 3300 probes, this model offers improved temperature performance. PLC Source PRO stocks genuine Bently Nevada parts with fast shipping.