Product Overview
The Bently Nevada 330191-00-70-15-00 belongs to the advanced 3300 XL 8 mm ETR probe series, designed to replace older proximity probes in critical rotating machinery. This model features a 3/8-24 UNF thread, a 7-inch overall case length, and a 1.5-meter (4.9-foot) total cable length. It incorporates patented TipLoc and CableLoc technologies for superior mechanical bond and pull strength, addressing common failure points in vibration monitoring systems. Upgrading to this probe reduces downtime and enhances measurement reliability.
Technical Specifications
The 330191-00-70-15-00 delivers precise performance across demanding industrial environments. Key parameters include:
| Parameter |
Value |
| Power Requirement |
-17.5 Vdc to -26 Vdc (nonincendive circuit) |
| Supply Sensitivity |
Less than 2 mV change per volt change |
| Output Resistance |
50 Ω |
| Probe DC Resistance (1.5 m) |
7.73 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Cable Type |
75Ω triaxial, FEP insulated |
| Maximum Tensile Strength (probe case to lead) |
330 N (75 lbf) |
| Connector Material |
Gold-plated brass or beryllium copper |
| Maximum Connector Torque |
0.565 N·m (5 in·lbf) |
| Probe Weight |
323 g/m (11.4 oz/m) |
| Temperature Range (T1) |
-55°C to +232°C |
These specifications ensure stable operation in high-temperature and vibration-prone applications.
Installation and Setup
Mount the Bently Nevada 330191-00-70-15-00 using the 3/8-24 UNF thread with a maximum thread engagement of 0.563 inches. Apply the recommended connector torque of 0.565 N·m (5 in·lbf) to secure the gold-plated connectors. The probe seals differential pressure with a Viton O-ring at the tip; note that probes are not pressure tested before shipment. For optimal linear range, operate the power supply at -23.5 Vdc or more negative when using barriers, as voltages above this may reduce linear performance.
Maintenance and Reliability
The 330191-00-70-15-00 benefits from a patented CableLoc design that provides 330 N (75 lbf) pull strength at the probe case-to-lead junction, and 270 N (60 lbf) at the extension cable connectors. The robust PPS tip encapsulation and stainless steel case withstand physical abuse. Follow the temperature classification schedule: for EPL Ga/Gc, T1 rating allows ambient from -55°C to +232°C. Regular inspection of cable integrity and connector tightness is recommended, especially in high-vibration environments. The optional FluidLoc cable prevents oil leakage, further extending service life.
Selection Guide and Purchasing Advice
When ordering the 330191-00-70-15-00, verify the unthreaded length (minimum 0.0 in.) and overall case length (7 inches). This probe does not include an extension cable; 1-meter systems work without one. For armored versions, select optional flexible AISI 302/304 SST with FEP outer jacket. All units are new and original in factory packing with a 12-month warranty. Purchase with confidence from PLC Source PRO, a trusted supplier of industrial automation spares.