Product Introduction
In rotating machinery vibration monitoring, precise and reliable proximity probes are essential. The Bently Nevada 330171-00-32-05-01-CN is a 5mm probe with 1/4-28 UNF thread, without armor. It delivers accurate displacement measurements for critical asset protection.
Technical Specifications
| Parameter |
Value |
| Power Supply |
-17.5 Vdc to -26 Vdc at 12 mA maximum consumption |
| Output Resistance |
50 Ω |
| Probe DC Resistance |
7.45 ± 0.50 Ω (0.5 m length) |
| Probe Case Thread |
1/4-28 UNF |
| Maximum Thread Engagement |
0.375 in |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Weight |
0.323 kg |
| Probe Temperature Range |
-35°C to +177°C (-31°F to +351°F) |
| Minimum Cable Bend Radius |
25.4 mm (1.0 in) |
| Probe Tensile Strength |
222 N (50 lbf) probe case to lead; 222 N (50 lbf) lead to extension cable connectors |
Installation & Setup Guidance
Proper installation of the Bently Nevada 330171-00-32-05-01-CN prevents common failure modes. When drilling and tapping a mounting hole for a 1/4-28 probe, use a #3 or larger tap drill. Apply recommended probe case torque of 5.1 N·m (45 in·lb), with a maximum of 7.3 N·m (65 in·lb). For connector-to-connector torque, use 0.565 N·m (0.42 ft·lbf) maximum. Ensure thread engagement does not exceed 0.375 in to avoid bottoming out.
Maintenance & Reliability
The Bently Nevada 330171-00-32-05-01-CN probe offers reliable operation across a wide temperature range. However, exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. Maintain a cable bend radius of at least 25.4 mm (1.0 in) to avoid stress on the FEP-insulated triaxial cable. The probe's PPS tip and 304 SST case resist harsh environments. Note the output voltage variations due to 60 Hz magnetic fields up to 300 Gauss: at 50 mil gap, the XL Proximitor sensor output is 0.0131 mil pp/gauss; probe output is 0.0014 mil pp/gauss. Regular inspection of cable and connector integrity ensures long service life.
Selection Guide
When selecting the Bently Nevada 330171-00-32-05-01-CN, verify the thread type (1/4-28 UNF), total probe length (0.5 meter / 1.6 feet), and connector option (miniature coaxial ClickLoc with connector protector and standard cable). The agency approval option CN ensures compliance with country-specific requirements. For genuine spares and reliable supply, PLC Source PRO offers this exact model with full traceability.