Product Introduction
When probe failure leads to costly downtime, the Bently Nevada 330191-40-75-50-00 provides robust reliability in vibration monitoring. This 3300 XL 8 mm ETR proximity probe features a 3/8-24 UNF thread, without armor, and a total length of 5.0 meters (16.4 feet). Designed for industrial automation, it incorporates patented TipLoc molding and CableLoc technology to withstand harsh environments and mechanical stress.
Technical Specifications
| Parameter |
Value |
| Unthreaded Length |
4.0 in (40 option) |
| Overall Case Length |
7.5 in (75 option) |
| Total Length |
5.0 meters (50 option) |
| Thread Size |
3/8-24 UNF |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Cable Type |
75 Ω triaxial, FEP insulated |
| Tensile Strength (probe case to lead) |
330 N (75 lbf) |
| Connector Torque Max |
0.565 N•m (5 in•lbf) |
| Probe Weight |
323 g/m (11.4 oz/ft) |
| Power Requirement |
-17.5 Vdc to -26 Vdc at 12 mA max |
| Output Resistance |
50 Ω |
| Temperature Range (EPL Ga/Gc) |
T1: -55°C to +232°C; T2: -55°C to +177°C; T3: -55°C to +120°C; T4: -55°C to +80°C; T5: -55°C to +40°C |
Installation & Setup Guidance
Mount the Bently Nevada 330191-40-75-50-00 probe securely using the 3/8-24 UNF thread, ensuring maximum thread engagement of 0.563 inches. Apply connector torque of 0.565 N•m (5 in•lbf) to protect contacts. This 5-meter probe must be paired with the corresponding 5-meter Proximitor sensor only. The probe seals differential pressure via a Viton O-ring; note that units are not pressure tested prior to shipment.
Maintenance & Reliability
The patented TipLoc molding provides a robust bond between tip and body, while CableLoc delivers 330 N (75 lbf) pull strength to prevent cable detachment. For applications prone to oil leaks, the optional FluidLoc cable prevents liquid ingress through the cable interior. The probe case material (AISI 303/304 SST) resists corrosion, and the thicker PPS encapsulation enhances durability against physical abuse. Regular inspection of the cable and connector is recommended, especially in high-vibration environments.
Troubleshooting & Common Issues
Common probe failures include cable pull-out and oil contamination. The Bently Nevada 330191-40-75-50-00 mitigates these with CableLoc and FluidLoc options. If output signal drifts, verify DC resistance (RPROBE) of 8.73 ± 0.50 Ω for a 5.0 m probe. Operation outside -23.5 Vdc can reduce linear range; ensure power supply stays within -23 Vdc to -26 Vdc when using barriers. For EPL Dc classifications, refer to the temperature schedule to avoid exceeding T ratings.
Selection Guide & Purchasing Advice
Before ordering, confirm that your system requires the 5.0-meter total length (option 50) and that the unthreaded length (4.0 in) and case length (7.5 in) meet your mounting dimensions. This model does not include armor (option 00). For oil-prone environments, consider the FluidLoc cable option. PLC Source PRO offers this probe factory-sealed, new, with a 12-month warranty. Verify compatibility with your Bently Nevada proximity system before purchase.