Product Overview
The Bently Nevada 330191-00-40-90-CN is a 3300 XL 8 mm ETR proximity probe designed for reliable shaft vibration and position measurement in industrial rotating machinery. This probe incorporates patented TipLoc and CableLoc technologies to prevent common failure modes such as probe tip detachment and cable pull-out. The FluidLoc optional cable further eliminates oil leakage through the cable interior, addressing a frequent maintenance issue. Each unit is supplied new and original in factory packing with a 12-month warranty.
Technical Specifications
| Parameter |
Value |
| Model |
330191 (3300 XL 8 mm ETR Probe, 3/8-24 UNF thread, without armor) |
| Unthreaded Length |
0.0 in |
| Overall Case Length |
4.0 in |
| Total Length |
9.0 meters (29.5 feet) |
| Agency Approval |
CN Country Specific |
| Power Supply |
-17.5 Vdc to -26 Vdc (nonincendive), 12 mA max |
| Output Resistance |
50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Standard Cable |
75Ω triaxial, FEP insulated (0.5, 1, 1.5, 2, 3, 5, or 9 m) |
| Extended Temp Cable |
75Ω triaxial, PFA insulated (0.5, 1, 1.5, 2, 5, or 9 m) |
| Armor (optional) |
Flexible AISI 302/304 SST with FEP outer jacket |
| Tensile Strength |
330 N (75 lbf) probe case to lead; 270 N (60 lbf) at connectors |
| Connector Material |
Gold-plated brass or beryllium copper |
| Max Connector Torque |
0.565 N·m (5 in·lbf) |
| Thread |
3/8-24 UNF, max engagement 0.563 in |
| Weight |
323 g/m (11.4 oz) |
| Probe DC Resistance (9.0 m) |
9.87 ± 0.50 Ω |
Probe entity parameters are met when used with BN extension cables and connected to BN Prox. Temperature classification per EPL Ga/Gc and Dc is available from -55°C up to +232°C depending on rating.
Industry Applications
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Steam Turbines: The Bently Nevada 330191-00-40-90-CN monitors shaft vibration in high-speed turbines, where patented CableLoc ensures the cable stays secure under severe vibration.
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Compressors: In reciprocating compressors, the FluidLoc option prevents oil wicking through the cable, a common failure cause that leads to false readings.
-
Pumps: The 8 mm probe's thicker PPS tip and larger case provide robustness against physical abuse in harsh pump environments.
Installation Guidance
For optimal performance, install the Bently Nevada 330191-00-40-90-CN with the recommended nonincendive circuit per drawing 140979. Ensure a clean, conductive target surface and proper gap setting. Use supplied Viton® O-ring to seal differential pressure between probe tip and case. Avoid exceeding 0.565 N·m torque on connectors. For one-meter systems, no extension cable is required.
Selection Guide & Purchasing Advice
When ordering, verify the total length (9.0 m in this configuration) and unthreaded/case length options. PLC Source PRO stocks the Bently Nevada 330191-00-40-90-CN as a new, factory-sealed unit with full warranty. Confirm your system's compatibility with BN extension cables and Proximitor® before purchase. For armored or FluidLoc variants, contact our team.