Product Introduction
When a vibration monitoring system fails due to probe damage or improper installation, downtime costs can escalate quickly. The Bently Nevada 330172-00-40-05-02-00 3300 5mm Probe with armor offers a robust solution for critical rotating machinery. This proximity transducer probe measures shaft vibration and position with high reliability, even in harsh environments. Designed for use with a compatible Proximitor sensor and extension cable, it delivers precise data for predictive maintenance.
Technical Specifications
Key specifications from the Bently Nevada 330172-00-40-05-02-00 ensure dependable performance in industrial settings:
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Power Supply Requirement: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. Operating at a more positive voltage than -23.5 Vdc can reduce linear range.
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Supply Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage, providing stable readings.
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Probe DC Resistance: For 0.5 meter probe length: 7.45 ± 0.50 Ω from center conductor to outer conductor.
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Probe Case Torque: Recommended torque is 5.1 N·m (45 in·lb); maximum torque is 7.3 N·m (65 in·lb). Exceeding maximum torque may damage the probe.
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Probe Temperature Range: -35°C to +177°C (-31°F to +351°F). Exposure below -34°C (-30°F) may cause premature pressure seal failure.
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Minimum Cable Bend Radius: 25.4 mm (1.0 in) to avoid cable damage.
Industry Applications
The Bently Nevada 330172-00-40-05-02-00 excels in applications requiring precise shaft proximity measurements. For example, in steam turbine vibration monitoring, this probe offers high repeatability and stability across the temperature range. In large compressor installations, the probe case material of AISI 304 stainless steel (SST) withstands corrosive environments. The integral armor protects the cable from mechanical wear, reducing the risk of signal degradation. Common failure modes, such as connector damage or cable fatigue, are minimized by the gold-plated brass or beryllium copper connector and the robust cable design with tensile strength of 222 N (50 lbf) at both case-to-lead and lead-to-extension cable connections.
Installation & Setup Guidance
To avoid common failure modes during installation, follow these guidelines for the Bently Nevada 330172-00-40-05-02-00:
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Thread Engagement: The probe case thread is 1/4-28 with a maximum thread engagement of 0.375 in. When drilling and tapping a mounting hole, use a #3 or larger tap drill as recommended.
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Torque Limits: Apply the probe case torque within 5.1 N·m (45 in·lb) recommended up to 7.3 N·m (65 in·lb) maximum. Overtightening can strip threads or deform the probe tip.
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Cable Routing: Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to prevent internal conductor fracture. Avoid sharp bends near the connector.
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Connector Torque: For connector-to-connector joints, apply a maximum torque of 0.565 N·m (0.42 ft·lbf) as per the recommended table.
Maintenance & Reliability
The Bently Nevada 330172-00-40-05-02-00 is designed for long service life with minimal maintenance. Key reliability factors include:
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Environmental Resistance: The probe tip material (polyphenylene sulfide, PPS) and case (AISI 304 SST) resist chemicals and moisture. Temperature schedules for EPL Ga and Gc classifications ensure safe operation from -55°C up to +232°C (T1 classification).
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Magnetic Field Effects: Under 60 Hz magnetic fields up to 300 Gauss, the probe output variation remains low (e.g., 0.0004 mil pp/gauss at 10 mil gap), confirming excellent noise immunity.
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Tensile Strength: With 222 N (50 lbf) strength at all cable connections, the probe withstands accidental pulling during maintenance.
For long-term reliability, avoid exposing the probe to temperatures below -34°C (-30°F) to preserve the pressure seal. Periodically inspect the cable and connector for wear. When ordering replacements or new installations, trust PLC Source PRO as your supplier for genuine Bently Nevada components. We stock the 330172-00-40-05-02-00 and can assist with compatibility questions.