Product Introduction
The Bently Nevada 330172-00-08-05-02-CN is a 5mm proximity probe designed for critical rotating machinery vibration monitoring. Part of the 3300 series, this eddy-current probe delivers precise displacement measurements in turbines, compressors, and pumps. The 330172-00-08-05-02-CN features a 1/4-28 UNF thread, armor, and a 0.5 meter (1.6 feet) cable with miniature coaxial ClickLoc connector. Constructed with a polyphenylene sulfide (PPS) tip and an AISI 304 stainless steel case, it withstands harsh industrial environments. This probe is engineered to reduce unplanned downtime and extend equipment life, providing a strong return on investment through improved condition monitoring.
Technical Specifications Breakdown
Key performance parameters from the Bently Nevada 330172-00-08-05-02-CN datasheet include:
| Parameter |
Value |
| Power Requirement |
-17.5 Vdc to -26 Vdc at 12 mA max consumption |
| Output Resistance |
50 W |
| Probe DC Resistance (0.5 m) |
7.45 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Temperature Range |
-35°C to +177°C (-31°F to +351°F) |
| Recommended Probe Case Torque |
5.1 N·m (45 in·lb) |
| Maximum Connector-to-Connector Torque |
0.565 N·m (0.42 ft·lbf) |
| Minimum Cable Bend Radius |
25.4 mm (1.0 in) |
The power supply sensitivity of less than 2 mV per volt change ensures stable readings even with supply fluctuations. The PPS tip offers excellent chemical resistance, while the 304 SST case provides corrosion resistance in oil and gas environments.
Industry Applications
In power generation, the Bently Nevada 330172-00-08-05-02-CN monitors shaft vibration in steam turbines, helping to avoid catastrophic failures. For petrochemical compressors, its 222 N (50 lbf) tensile strength withstands mechanical stresses. In paper mills, the probe's -35°C to +177°C range covers both cold startup and high-temperature processes, reducing the need for multiple sensor types and lowering spare parts inventory costs.
Installation & Setup Guidance
When installing the Bently Nevada 330172-00-08-05-02-CN, ensure the mounting hole is tapped using a #3 or larger tap drill for the 1/4-28 thread. The maximum thread engagement length is 0.375 in. Apply the recommended probe case torque of 5.1 N·m (45 in·lb), not exceeding 7.3 N·m (65 in·lb) to avoid damaging the case. Route the 75 Ω triaxial FEP insulated cable with a minimum bend radius of 25.4 mm (1.0 in). For best linear range, use a -24 Vdc supply and ensure the target is AISI 4140 steel gapped at 1.27 mm (50 mils). Avoid operating at voltages more positive than -23.5 Vdc as it reduces linear range.
Selection Guide & Purchasing Advice
Verify that the Bently Nevada 330172-00-08-05-02-CN matches your system requirements: confirm the 0.5 meter cable length suits your installation distance, and the ClickLoc connector mates with your extension cable. For multi-plane vibration monitoring, consider ordering additional probes with different unthreaded lengths. As a trusted supplier, PLC Source PRO offers genuine Bently Nevada products with full traceability. Ensure your part number matches exactly: 330172-00-08-05-02-CN. Contact our technical team for assistance with compatible proximitor sensors and extension cables.