Product Overview
In industrial rotating machinery, unplanned downtime due to bearing wear or shaft misalignment can cost thousands per minute. The Bently Nevada 330171-00-20-05-02-CN 5mm proximity probe provides continuous, non-contact vibration and position measurement, enabling early fault detection and extending equipment life. This 3300 series probe is manufactured in the U.S.A. and designed for reliable service in harsh environments. Its cost-effective design reduces total cost of ownership by minimizing false trips and maintenance interventions.
Technical Specifications
The Bently Nevada 330171-00-20-05-02-CN probe operates with a -24 Vdc supply and delivers consistent performance across its temperature range. Below are the key parameters:
| Parameter |
Value |
| Probe Type |
5mm proximity probe, 1/4-28 UNF thread, without armor |
| Unthreaded Length Option |
0 in |
| Overall Case Length Option |
2 in |
| Total Length Option |
0.5 meter (1.6 feet) |
| Connector Option |
Miniature coaxial ClickLoc connector, standard cable |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Case Thread |
1/4-28 |
| Maximum Thread Engagement |
0.375 in |
| Power Supply |
-17.5 Vdc to -26 Vdc at 12 mA maximum |
| Sensitivity |
Less than 2 mV change per volt change in input voltage |
| Output Resistance |
50 W |
| Probe DC Resistance (0.5m) |
7.45 ± 0.50 Ω |
| Probe Cable |
75 Ω triaxial, FEP insulated, 0.5m |
| Tensile Strength |
222 N (50 lbf) probe case to lead |
| Connector Material |
Gold-plated brass or gold-plated beryllium copper |
| Probe Case Torque |
5.1 N·m recommended, 7.3 N·m maximum |
| Connector-to-Connector Torque |
0.565 N·m maximum |
| Minimum Cable Bend Radius |
25.4 mm (1.0 in) |
| Probe Temperature Range |
-35°C to +177°C (-31°F to +351°F) |
| Weight |
0.323 kg |
Industry Applications
The Bently Nevada 330171-00-20-05-02-CN is ideal for monitoring critical rotating assets such as steam turbines, centrifugal compressors, and large pumps. In power generation, it detects shaft vibration early, preventing catastrophic failures. In oil and gas, it ensures reliable operation of gas turbines in remote locations. The probe's rugged construction and wide temperature range make it suitable for both indoor and outdoor installations.
Installation & Setup Guidance
Proper installation of the 330171-00-20-05-02-CN is essential for accurate readings. Use a #3 or larger tap drill for mounting holes. Apply the recommended torque of 5.1 N·m to the probe case; do not exceed 7.3 N·m. Ensure the connector-to-connector torque does not exceed 0.565 N·m. Maintain a minimum cable bend radius of 25.4 mm to avoid damage. Gap the probe at 1.27 mm (50 mils) against a clean AISI 4140 steel target for optimal performance.
Maintenance & Reliability
This probe requires minimal routine maintenance. Regularly inspect the cable for cuts or kinks. Avoid exposing the probe to temperatures below -34°C (-30°F) to preserve the pressure seal. The PPS tip resists chemical attack, while the stainless steel case provides corrosion resistance. By following the temperature schedules provided in the datasheet, users can maximize probe life in hazardous areas.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 330171-00-20-05-02-CN, verify your system requirements: supply voltage between -17.5 and -26 Vdc, correct cable length, and thread type. For application support, contact PLC Source PRO, your trusted supplier of industrial automation spares.