Product Overview
The Bently Nevada 330191-00-33-10-CN proximity probe is a high-performance industrial automation module designed for reliable vibration and displacement monitoring in rotating machinery. This 3300 XL 8 mm ETR probe features a 3/8-24 UNF thread, without armor, and a total length of 1.0 metre (3.3 feet). It incorporates patented TipLoc and CableLoc technologies that provide a robust bond and 330 N (75 lbf) pull strength, significantly improving durability over earlier designs. One-meter systems require no extension cable, simplifying installation. This module is an ideal upgrade for older proximity probes, offering enhanced robustness against physical abuse and environmental stress.
Key Technical Specifications
| Parameter |
Value |
| Power Supply |
-17.5 Vdc to -26 Vdc (nonincendive), -23 Vdc to -26 Vdc with barriers |
| Maximum Current Consumption |
12 mA |
| Supply Sensitivity |
Less than 2 mV change per volt change in input voltage |
| Output Resistance |
50 Ω |
| Probe DC Resistance (1.0 m) |
7.59 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Standard Cable |
75Ω triaxial, FEP insulated |
| Extended Temperature Cable |
75Ω triaxial, PFA insulated |
| Armor (optional) |
Flexible AISI 302/304 SST with FEP jacket |
| Tensile Strength (Case to Lead) |
330 N (75 lbf) |
| Tensile Strength (Lead to Connector) |
270 N (60 lbf) |
| Connector Material |
Gold-plated brass or beryllium copper |
| Maximum Connector Torque |
0.565 N·m (5 in·lbf) |
| Probe Case Thread |
3/8-24 UNF, max thread engagement 0.563 in |
| Weight |
323 g/m (11.4 oz) |
Industry Applications
The 330191-00-33-10-CN is ideal for vibration monitoring, shaft displacement measurement, and eccentricity detection in turbines, compressors, pumps, and fans. Its 8 mm probe tip with thicker PPS encapsulation provides superior ruggedness, making it suitable for harsh industrial environments. The optional FluidLoc cable prevents oil leakage from machinery, enhancing reliability in lubrication systems.
Installation Guidance
This 330191-00-33-10-CN probe uses a 3/8-24 UNF thread with a maximum engagement of 0.563 inches. Apply a connector torque not exceeding 0.565 N·m. The probe includes a Viton O-ring for sealing differential pressure between tip and case, but note that probes are not pressure-tested before shipment. For one-meter systems, no extension cable is needed. Ensure the nonincendive circuit connection per drawing 140979 if using -17.5 Vdc to -26 Vdc supply.
Maintenance and Reliability
The probe offers robust construction with AISI 303/304 stainless steel case and a temperature range from -55°C to +232°C (T1 classification). Patented TipLoc and CableLoc designs provide long-term mechanical stability. Regular inspection of the cable and connector is recommended. The gold-plated connectors resist corrosion. This module is covered by a 12-month factory warranty from Bently Nevada.
Selection Guide
When ordering this 330191-00-33-10-CN, verify the unthreaded length option (minimum 0.0 in), overall case length (3.3 in), total length (1.0 metre), and agency approval (Country Specific Approval). For applications requiring oil leak prevention, consider the optional FluidLoc cable. PLC Source PRO offers this genuine Bently Nevada module in new, factory-sealed packaging. Contact us for compatibility with your existing system.