Product Introduction
When machine vibration monitoring demands high-fidelity measurements under harsh conditions, the Bently Nevada 330191-00-56-10-00 3300 XL 8 mm ETR Proximity Probe delivers exceptional durability and accuracy. This improved design replaces earlier probes with patented TipLoc and CableLoc technologies that strengthen the bond between probe tip and body, and secure the cable connection to withstand 330 N (75 lbf) pull strength. The probe is ideal for upgrading older systems or replacing worn units in rotating machinery applications.
Technical Specifications
Below are the key parameters for the Bently Nevada 330191-00-56-10-00. All values are taken directly from the product datasheet.
| Parameter |
Value |
| Probe Type |
3300 XL 8 mm ETR, 3/8-24 UNF thread, without armor |
| Unthreaded Length |
Minimum 0.0 in. |
| Overall Case Length |
5.6 in (56 option) |
| Total Length |
1.0 meter (3.3 feet) |
| Power Requirement |
-17.5 Vdc to -26 Vdc at 12 mA max (nonincendive circuit); -23 Vdc to -26 Vdc with barriers |
| Sensitivity |
Less than 2 mV change per volt change in input voltage |
| Output Resistance |
50 Ω |
| Nominal DC Resistance (at 1.0 m probe) |
7.59 Ω ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Cable Type (Standard) |
75 Ω triaxial, FEP insulated, lengths 0.5, 1, 1.5, 2, 3, 5, or 9 m |
| Cable Type (Extended Temp) |
75 Ω triaxial, PFA insulated, lengths 0.5, 1, 1.5, 2, 5, or 9 m |
| Tensile Strength (Probe case to lead) |
330 N (75 lbf) |
| Tensile Strength (Connector) |
270 N (60 lbf) |
| Connector Material |
Gold-plated brass or gold-plated beryllium copper |
| Maximum Connector Torque |
0.565 N·m (5 in·lbf) |
| Thread (3/8-24 UNF) Max Engagement |
0.563 in |
| Weight |
323 g/m (11.4 oz per meter) |
| Sealing Material |
Viton® O-ring (differential pressure seal) |
| 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
The Bently Nevada 330191-00-56-10-00 mounts using the 3/8-24 UNF thread. Maximum thread engagement is 0.563 inches to avoid over-tightening. When tightening the connector, apply torque no greater than 0.565 N·m (5 in·lbf). The probe is designed for use with Bently Nevada extension cables (except for 1-meter systems which do not require one). Note that the probe is not pressure tested before shipment, but the Viton O-ring provides sealing against differential pressure. If using the optional armor, select flexible AISI 302 or 304 stainless steel with FEP outer jacket.
Maintenance & Reliability
The patented TipLoc molding method significantly improves bond strength at the probe tip, reducing failure from vibration and impact. The CableLoc design provides 330 N pull strength, preventing disconnection during operation. For extended life, consider the optional FluidLoc cable option to prevent oil leakage through the cable interior. Regularly inspect the probe cable and connectors for wear. The probe operates reliably across a broad temperature range, from -55°C up to +232°C depending on temperature classification.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 330191-00-56-10-00, verify the total length (1.0 meter) matches your installation requirements. The unthreaded length option is set to 0.0 inches, and overall case length is 5.6 inches. Agency approval is not required for this version. For added robustness in harsh environments, consider the optional armor. All units supplied by PLC Source PRO are new and original in factory packing with a 12-month warranty.