Product Introduction
When harsh industrial conditions cause probe failures from cable stress or tip detachment, the Bently Nevada 330191-00-33-50-CN provides a robust solution. This 3300 XL 8 mm ETR probe incorporates patented TipLoc and CableLoc designs, delivering 330 N (75 lbf) tensile strength to secure the probe cable and tip. The 8 mm PPS probe tip with thicker encapsulation offers superior resistance to physical abuse, making it an ideal choice for demanding rotating machinery monitoring.
Technical Specifications Breakdown
The Bently Nevada 330191-00-33-50-CN is engineered for precision and durability. Key parameters from the datasheet include:
| Parameter |
Value |
| Power Supply (nonincendive) |
-17.5 Vdc to -26 Vdc at 12 mA max |
| Supply Sensitivity |
<2 mV per V change in input |
| Output Resistance |
50 Ω |
| Probe DC Resistance (5.0 m) |
8.73 ± 0.70 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 SST |
| Standard Cable |
75Ω triaxial FEP insulated, 5.0 m |
| Extended Temp Cable Option |
75Ω triaxial PFA insulated |
| Tensile Strength (Case to Lead) |
330 N (75 lbf) |
| Connector Material |
Gold-plated brass or beryllium copper |
| Max Connector Torque |
0.565 N·m (5 in·lbf) |
| Probe Case Thread |
3/8-24 UNF, max engagement 0.563 in |
| Probe Weight |
323 g/m (11.4 oz) |
Application Scenarios
This Bently Nevada 330191-00-33-50-CN is designed for critical vibration and displacement measurements in turbines, compressors, and pumps. The 8 mm probe size offers enhanced ruggedness, reducing false readings from mechanical shock. In oil and gas environments, the optional FluidLoc cable prevents fluid leakage through the cable interior, meeting strict containment requirements.
Installation & Setup Guidance
Mount the probe using the 3/8-24 UNF thread with a maximum thread engagement of 0.563 in. Ensure the Viton O-ring seals the differential pressure between probe tip and case. For optimal performance, connect the probe to a Bently Nevada Proximitor using BN extension cables. Tighten the connector to 0.565 N·m (5 in·lbf) to avoid damage. Systems under 1 meter do not require an extension cable.
Maintenance & Reliability
Regularly inspect the cable and connector for wear. The probe operates reliably in ambient temperatures from -55°C to +232°C (T1 classification) and is designed for long service intervals. The solid PPS tip and stainless steel case withstand corrosive environments. Note: Probes are not pressure tested prior to shipment, but the Viton O-ring provides effective sealing against differential pressure.
Selection Guide & Purchasing Advice
When ordering, confirm the total length option of 5.0 meters (16.4 feet) and country-specific approval (CN). This model has a minimum unthreaded length of 0.0 in and an overall case length of 3.3 in. For guaranteed new and original stock with factory warranty, choose PLC Source PRO as your supplier. Ensure compatibility with your existing Bently Nevada system by verifying the 8 mm probe and extension cable requirements.