Product Overview
When probe failures due to cable pullout or tip separation cause unscheduled downtime, the Bently Nevada 330191-00-40-90-05 3300 XL 8 mm ETR Probe delivers a robust solution. This industrial automation module incorporates patented TipLoc and CableLoc technologies to provide a stronger bond between probe tip and body, and a cable pull strength of 330 N (75 lbf). Designed for critical rotating machinery monitoring, the Bently Nevada 330191-00-40-90-05 features a 9.0 meter (29.5 feet) total length, a 4.0 inch overall case length, and a 3/8-24 UNF thread without armor. It carries CSA, ATEX, and IECEx approvals for use in hazardous areas.
Key Technical Specifications
The Bently Nevada 330191-00-40-90-05 operates on a power supply of -17.5 Vdc to -26 Vdc (nonincendive circuit) or -23 Vdc to -26 Vdc with barriers, with maximum consumption of 12 mA. Its output resistance is 50 Ω, and supply sensitivity is less than 2 mV change in output voltage per volt change in input voltage. The probe tip is made of polyphenylene sulfide (PPS) and the case of AISI 303 or 304 stainless steel. The standard cable is a 75Ω triaxial FEP insulated cable. Nominal probe DC resistance for the 9.0 meter length is 9.87 ± 0.50 Ω. Maximum connector torque is 0.565 N·m (5 in·lbf).
Industrial Use Cases
In turbomachinery, compressors, and large pumps, the Bently Nevada 330191-00-40-90-05 provides precise shaft displacement and eccentricity measurements. Its 8 mm probe diameter offers a thicker encapsulation for improved ruggedness, making it ideal for environments with physical abuse. The optional FluidLoc cable prevents oil leaks from the machine interior, further enhancing reliability in lubricated systems.
Installation Guidelines
For optimal performance, mount the Bently Nevada 330191-00-40-90-05 with the specified 3/8-24 UNF thread engagement at a maximum length of 0.563 inches. Ensure the probe tip is clean and the mounting surface is free of debris. When using extension cables, verify they are BN-compatible to meet entity parameters. One-meter systems do not require an extension cable. Always follow installation drawing 140979 for nonincendive connections.
Maintenance for Long-Term Reliability
The robust design of the Bently Nevada 330191-00-40-90-05 reduces the need for frequent inspections. However, periodic checks of the connector torque (0.565 N·m max) and cable integrity are recommended. The Viton® O-ring seals differential pressure between tip and case, but probes are not pressure tested before shipment. For extended temperature ranges, use PFA insulated cables. The temperature schedule (T1 to T5) ensures safe operation from -55°C to +232°C.
Purchasing Advice
When ordering the Bently Nevada 330191-00-40-90-05, verify the thread type (3/8-24 UNF) and total length (9.0 m). This model does not include armor; for armored versions, specify accordingly. Ensure your system supports the required input voltage and entity parameters. For genuine, factory-sealed units with a 12-month warranty, trust PLC Source PRO as your reliable supplier of industrial automation spares.