Product Introduction
The Bently Nevada 330191-00-40-05-00 is a high-performance 3300 XL 8 mm ETR proximity probe designed for precise vibration and position monitoring in critical rotating machinery. This industrial automation module integrates patented TipLoc molding and CableLoc pull-strength technology to deliver exceptional robustness and long-term reliability. The 330191-00-40-05-00 features a 3/8-24 UNF thread, 0.5 meter total length, and operates without armor. It is part of Bently Nevada's proven 3300 XL series, engineered to withstand harsh industrial environments.
Technical Specifications Breakdown
The Bently Nevada 330191-00-40-05-00 offers key performance parameters critical for accurate measurements. Below are the essential specifications derived from the product data:
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Power Supply: Requires -17.5 Vdc to -26 Vdc when installed with nonincendive circuit (per drawing 140979) at 12 mA max consumption; with barriers, -23 Vdc to -26 Vdc. Operation more positive than -23.5 Vdc may reduce linear range.
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Supply Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage.
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Output Resistance: 50 Ω.
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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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Nominal DC Resistance (0.5 m length): 7.45 ± 0.50 Ω.
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Cable: 75Ω triaxial, FEP insulated (standard) or PFA (extended temperature range).
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Maximum Tensile Strength: 330 N (75 lbf) at probe case to probe lead; 270 N (60 lbf) at connectors.
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Connector Material: Gold-plated brass or gold-plated beryllium copper; max connector torque 0.565 N·m (5 in·lbf).
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Probe Weight: 323 g/m (11.4 oz/ft).
Industry Applications
This Bently Nevada 330191-00-40-05-00 probe is ideal for monitoring vibration and shaft position in turbines, compressors, pumps, and other rotating equipment. Its robust construction (PPS tip, stainless case) and patented CableLoc (330 N pull strength) prevent probe tip detachment and cable pull-out — a common failure mode leading to unexpected downtime. The optional FluidLoc cable further prevents oil leakage through the cable interior, making it suitable for lubricated machinery. One-meter systems do not require an extension cable, simplifying installation.
Maintenance & Reliability
The Bently Nevada 330191-00-40-05-00 is designed for minimal maintenance. The Viton® O-ring seal ensures differential pressure integrity between probe tip and case. Probes are not pressure-tested before shipment, but the design prevents leaks. Temperature classification ranges: for EPL Ga/Gc, ambient temperature from -55°C up to +232°C (T1) depending on rating. Regular inspection of cable and connectors for wear is recommended; gold-plated connectors resist corrosion. The 12-month factory warranty provides added assurance.
Compatibility & Integration
This Bently Nevada 330191-00-40-05-00 probe meets entity parameters when used with BN extension cables and connected to BN Proximitor® monitors. It is compatible with standard 75Ω triaxial cables in lengths 0.5, 1, 1.5, 2, 3, 5, or 9 meters (standard) or extended temperature range versions. System integration is straightforward with any Bently Nevada monitoring system requiring a 3/8-24 UNF threaded probe.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 330191-00-40-05-00, verify the thread type (3/8-24 UNF), total length (0.5 meter), and absence of armor. Ensure your monitoring system supports 75Ω triaxial cable and -24 Vdc power supply. For replacement or upgrade, confirm the original part number. For genuine new-in-box units with factory warranty, trust PLC Source PRO as your reliable supplier.