Product Introduction
When upgrading vibration monitoring systems, the Bently Nevada 330191-00-70-05-00 3300 XL 8 mm ETR Probe delivers enhanced robustness with patented TipLoc and CableLoc designs. This probe replaces older 8 mm models, offering a thicker PPS probe tip and a stronger stainless steel case for improved resistance to physical abuse. The 330191-00-70-05-00 is part of the 3300 XL series, designed for reliable proximity measurement in critical rotating machinery.
Technical Specifications
The Bently Nevada 330191-00-70-05-00 operates with a power requirement of -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. Key parameters include:
| Parameter |
Value |
| Supply Sensitivity |
Less than 2 mV change per volt change in input voltage |
| Output Resistance |
50 Ω |
| Probe DC Resistance (0.5 m) |
7.45 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Cable Type |
75 Ω triaxial, FEP or PFA insulated |
| Maximum Tensile Strength |
330 N (75 lbf) probe case to lead |
| Connector Material |
Gold-plated brass or beryllium copper |
| Maximum Connector Torque |
0.565 N·m (5 in·lbf) |
| Probe Thread |
3/8-24 UNF, max engagement 0.563 in |
| Probe Weight |
323 g/m (11.4 oz) |
Real-World Applications
The Bently Nevada 330191-00-70-05-00 is ideal for monitoring vibrations in turbines, compressors, and pumps. Its 8 mm diameter and robust construction make it suitable for harsh environments where oil or moisture ingress is a concern. The optional FluidLoc cable prevents liquid leakage through the cable interior, enhancing reliability in high-pressure applications.
Installation & Setup Guidance
Mount the probe with the 3/8-24 UNF thread, ensuring a maximum thread engagement of 0.563 inches. Tighten the connector to 0.565 N·m using a torque wrench. The probe uses a Viton® O-ring for differential pressure sealing; note that probes are not pressure tested before shipment. Use only BN extension cables to maintain entity parameters.
Maintenance & Reliability
The 330191-00-70-05-00 features a patented CableLoc design that provides 330 N pull strength, reducing cable detachment risk. The tip’s PPS encapsulation withstands temperatures from -55°C to +232°C (T1 classification). Regularly inspect the cable and connector for wear; replacement intervals depend on environmental exposure. The stainless steel case resists corrosion, ensuring long service life.
Selection Guide & Purchasing Advice
When ordering, verify the unthreaded length (0.0 in), overall case length (7 in), and total length (0.5 meter). The agency approval option is not required. For guaranteed authenticity and 12-month warranty, purchase from PLC Source PRO. Ensure compatibility with your existing Bently Nevada monitoring system.