Product Overview
When you need to replace or upgrade a legacy proximity transducer, the Bently Nevada 330173-00-04-20-02-CN delivers the reliability and precision your rotating machinery protection demands. This 3300 Series 5mm Probe uses an M8 x 1 thread and an unarmored cable, making it a direct-fit option for many existing installations. The model designation decodes as follows: unthreaded length of 0 mm, overall case length of 40 mm, total length of 2.0 metres (6.6 feet), miniature coaxial ClickLoc connector with standard cable, and country-specific agency approval.
Technical Specifications
The specifications below reflect a proximity transducer system measured at +18°C to +27°C with a -24 Vdc power supply, a 10 kW load, an AISI 4140 steel target, and a probe gapped at 1.27 mm (50 mils).
| Parameter |
Value |
| Power Supply |
-17.5 Vdc to -26 Vdc at 12 mA maximum consumption |
| Supply Sensitivity |
Less than 2 mV change per volt change |
| Output Resistance |
50 W |
| Probe DC Resistance (2.0 m) |
7.88 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Probe Cable |
75 Ω triaxial, FEP insulated, 2.0 m |
| Tensile Strength |
222 N (50 lbf) |
| 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 |
| Thread Engagement Max |
12 mm |
- The -17.5 to -26 Vdc power range gives you flexibility with existing monitoring system supplies.
- With a probe DC resistance of 7.88 Ω ± 0.50 for a 2.0 m lead, signal integrity remains stable over the full cable run.
- The PPS tip resists wear and provides consistent eddy-current performance even at elevated temperatures up to +177°C.
Installation & Setup
Proper installation of the Bently Nevada 330173-00-04-20-02-CN starts with confirming the mounting thread. This probe uses an M8 x 1 thread with a maximum thread engagement of 12 mm. Apply a recommended case torque of 5.1 N·m, and never exceed 7.3 N·m. Use the supplied ClickLoc connector for a secure, tool-free connection; ensure connector-to-connector torque does not exceed 0.565 N·m. Maintain a cable bend radius of at least 25.4 mm to avoid internal damage.
Maintenance & Reliability
Routine inspection of the probe tip and cable is essential for accurate readings. Check for buildup of contaminants on the PPS tip and inspect the cable for cuts or kinks. The all-stainless steel case withstands harsh environments, and the probe operates reliably across -35°C to +177°C. Because the probe supports high tensile strength of 222 N, it resists pull forces during maintenance. Regularly verify that the connector remains hand-tightened to the Proximitor, and re-torque to the recommended value if necessary.
Troubleshooting
One common issue when replacing a probe is using an incorrect gap setting. For this Bently Nevada 330173-00-04-20-02-CN, always set the gap relative to the target material. If the output signal drifts, check the DC resistance between the center conductor and outer conductor; a reading outside 7.88 Ω ± 0.50 for the 2.0 m cable indicates a damaged lead. Also verify the supply voltage stays within -17.5 Vdc to -26 Vdc; operation above -23.5 Vdc may reduce the linear range.
Buying Guide
Before ordering, confirm your system's cable length requirements and connector type. The 330173-00-04-20-02-CN ships with a 2.0 m cable and a miniature coaxial ClickLoc connector, compatible with 3300 XL extension cables and Proximitor sensors. Verify that your monitor accepts the 5 mm probe format and that the M8 x 1 thread matches your bracket. PLC Source PRO stocks this exact Bently Nevada 330173-00-04-20-02-CN and can confirm fitment for your application.