Product Overview
The Bently Nevada 330191-00-40-15-00 is a high-performance 3300 XL 8mm ETR proximity probe designed for precise vibration and position measurement in rotating machinery. This industrial automation module features a 3/8-24 UNF thread, 4.0-inch overall case length, and 1.5-meter cable. With patented TipLoc and CableLoc technologies, the Bently Nevada 330191-00-40-15-00 provides exceptional pull strength (330 N) and a robust bond between probe tip and body, reducing failure risks in harsh environments.
Technical Specifications
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Power Supply: Requires -17.5 Vdc to -26 Vdc (nonincendive circuit); -23 Vdc to -26 Vdc with barriers at 12 mA max.
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Sensitivity: Less than 2 mV change per volt input change.
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Output Resistance: 50 Ω
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Probe DC Resistance: 7.73 ± 0.50 Ω (for 1.5m probe length)
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 303 or 304 stainless steel
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Cable: 75Ω triaxial, FEP insulated (standard) or PFA (extended temp range)
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Tensile Strength: 330 N (75 lbf) probe case to lead; 270 N (60 lbf) at connectors
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Connector: Gold-plated brass or beryllium copper; max torque 0.565 N·m
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Thread: 3/8-24 UNF, max engagement 0.563 in
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Weight: 323 g/m (11.4 oz/m)
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Temperature Classification: EPL Ga/Gc T1-T5, EPL Dc T90°C-T280°C (see data)
Key Features for Failure Prevention
The Bently Nevada 330191-00-40-15-00 incorporates several design enhancements to combat common probe failures:
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TipLoc Molding: Patented process ensures a robust bond between the probe tip and body, preventing tip separation under vibration.
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CableLoc Design: Provides 330 N (75 lbf) pull strength, reducing cable detachment risks.
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FluidLoc Option: Available to prevent oil/liquid leakage through the cable interior.
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Thicker Encapsulation: 8mm probe design offers thicker PPS encapsulation for improved durability against physical abuse.
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Differential Pressure Seal: Viton® O-ring seals between probe tip and case; temperature-rated for -55°C to +232°C.
Common Failure Modes Addressed
In rotating machinery monitoring, proximity probes often suffer from cable pull-out, tip wear, or environmental contamination. The Bently Nevada 330191-00-40-15-00 counters these issues through its reinforced cable attachment, rugged stainless steel case, and optional armor (flexible AISI 302/304 SST with FEP jacket). The probe’s temperature schedule ensures reliable operation across a wide range (T1: -55°C to +232°C for EPL Ga/Gc). By using this probe, maintenance teams reduce unexpected downtime and extend service intervals.
Installation Guidance
Mount the Bently Nevada 330191-00-40-15-00 using the 3/8-24 UNF thread with a maximum engagement of 0.563 inches. Ensure the probe tip is clean and the mounting surface is free of debris. Connect the 75Ω triaxial cable to a compatible Bently Nevada proximity system (BN Prox). For barrier applications, verify power supply is within -23 Vdc to -26 Vdc. Avoid operating above -23.5 Vdc to maintain linear range. Use a torque wrench on connectors (max 0.565 N·m) to avoid damage.
Maintenance and Reliability
Inspect the Bently Nevada 330191-00-40-15-00 periodically for signs of physical damage, especially at the probe tip and cable connections. Check the O-ring seal integrity if the probe is exposed to differential pressure. The probe’s stainless steel case resists corrosion, but extreme temperatures should remain within the specified temperature schedule. When used with Bently Nevada extension cables, entity parameters are met, ensuring intrinsic safety compliance. Proper maintenance preserves measurement accuracy and extends service life beyond typical cycles.
Selection Guide
When ordering the Bently Nevada 330191-00-40-15-00, confirm the total length option (15 = 1.5m) and agency approval (00 = not required). For longer distances, choose from standard cable lengths (0.5, 1, 1.5, 2, 3, 5, 9m) or extended temperature range cables. Consider the optional FluidLoc cable if the probe will be installed in oil-wetted environments. PLC Source PRO supplies this item new and in original factory packing with a 12-month warranty.