Product Introduction
When machinery vibration monitoring demands precision and reliability, the Bently Nevada 330171-00-08-05-02-CN provides an excellent solution. This 3300 series 5mm probe features a 1/4-28 UNF thread and is designed without armor for compact installations. Manufactured in the USA, the probe uses a polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case to resist harsh conditions. With a total cable length of 0.5 meters (1.6 feet) and a miniature coaxial ClickLoc connector, it integrates easily into existing systems.
Technical Specifications Breakdown
The Bently Nevada 330171-00-08-05-02-CN is engineered for accurate proximity sensing. Key electrical and mechanical parameters include:
- Power Supply: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum consumption
- Supply Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage
- Output Resistance: 50 W
- Probe DC Resistance (0.5m length): 7.45 ± 0.50 Ω
- Probe Tip Material: Polyphenylene sulfide (PPS)
- Probe Case Material: AISI 304 stainless steel (SST)
- Probe Cable: 75 Ω triaxial, fluoroethylene propylene (FEP) insulated, 0.5m length
- Tensile Strength: 222 N (50 lbf) probe case to lead and lead to extension cable connectors
- 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)
- Thread: 1/4-28 UNF, maximum thread engagement 0.375 in
- Weight: 0.323 kg
These specifications ensure stable performance in industrial environments. Note that the specified values are for a system at +18°C to +27°C with a -24 Vdc supply, 10 kW load, AISI 4140 steel target, and 1.27 mm gap.
Industry Applications
The Bently Nevada 330171-00-08-05-02-CN is ideal for rotating machinery such as turbines, compressors, and pumps. In petrochemical and power generation plants, the probe monitors shaft vibration and position. The PPS tip offers chemical resistance, while the stainless steel case withstands corrosion. The 1/4-28 thread allows secure mounting, and the ClickLoc connector simplifies cable attachment. Proper installation (respecting the 0.375 in maximum thread engagement) prevents loosening due to vibration—a common failure mode.
Installation & Setup Guidance
To achieve reliable measurements with the Bently Nevada 330171-00-08-05-02-CN, follow these guidelines:
- Drill and tap a mounting hole using a #3 or larger tap drill for the 1/4-28 thread.
- Apply probe case torque between 5.1 N·m (recommended) and 7.3 N·m (maximum).
- For the connector-to-connector joint, do not exceed 0.565 N·m torque.
- Ensure the cable bend radius is at least 25.4 mm to avoid damaging the FEP insulation.
- Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent pressure seal failure.
- Use a -24 Vdc supply for optimal linear range (operation above -23.5 Vdc reduces range).
Following these steps minimizes the risk of mechanical failure and signal errors.
Maintenance & Reliability
Regular inspection of the Bently Nevada 330171-00-08-05-02-CN ensures long service life. Check the cable for kinks or abrasion. Verify connector torque periodically. Monitor the DC resistance (7.45 ± 0.50 Ω) to detect cable degradation. The probe operates over a wide temperature range (-35°C to +177°C) and meets temperature classification schedules for hazardous areas (EPL Ga, Gc, and Dc). By adhering to maintenance intervals, users can prevent unexpected downtime and extend probe lifespan—a key factor in reducing total cost of ownership.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 330171-00-08-05-02-CN, confirm the cable length (0.5 m), connector type (miniature coaxial ClickLoc), and agency approval (CN for country-specific). This probe is a direct replacement for other 3300 series 5mm probes. For fast delivery and genuine parts, choose PLC Source PRO as your supplier. Our inventory ensures you receive the exact model you need for your vibration monitoring system.