Product Overview
The Bently Nevada 330191-00-40-10-00 is a 3300 XL 8 mm ETR proximity probe designed for reliable displacement and vibration measurement in rotating machinery. This probe replaces older 3300 series sensors with improved robustness through patented TipLoc and CableLoc designs, providing 330 N pull strength and superior environmental sealing. The 330191-00-40-10-00 features a 3/8-24 UNF thread, 0.0 in unthreaded length, 4.0 in overall case length, and a 1.0 meter total length (3.3 feet) – no extension cable required for this one-meter system.
Technical Specifications Breakdown
The 330191-00-40-10-00 operates with a power supply requirement of -17.5 Vdc to -26 Vdc when installed with a nonincendive circuit (per drawing 140979) at 12 mA maximum consumption. With barriers, the range shifts to -23 Vdc to -26 Vdc. It offers a supply sensitivity of less than 2 mV change per volt change in input voltage and an output resistance of 50 Ω.
The probe tip is made of Polyphenylene sulfide (PPS), while the probe case uses AISI 303 or 304 stainless steel. The probe cable is a 75 Ω triaxial FEP insulated type for standard temperature, or PFA insulated for extended temperature ranges. The nominal probe DC resistance at 1.0 m length is 7.59 ± 0.50 Ω.
Environmental performance is assured across a wide temperature schedule: for Ga and Gc EPL, T1 rating covers -55°C to +232°C; T2 to T5 down to -55°C to +40°C.
Industry Applications
This Bently Nevada 330191-00-40-10-00 is ideal for upgrading vibration monitoring systems on steam turbines, compressors, and large pumps. Its 8 mm tip offers thicker PPS encapsulation for increased ruggedness, making it suitable for environments with physical abuse. For example, in a refinery where vibration probes often suffer impact during maintenance, this probe’s robust case and high pull strength reduce replacement frequency, aligning with a cost-benefit upgrade strategy.
Installation & Setup Guidance
Mount the 330191-00-40-10-00 using a 3/8-24 UNF threaded hole with a maximum thread engagement of 0.563 in. Use a torque of 0.565 N·m (5 in·lbf) on the gold-plated connector. Ensure the Viton O-ring seals the differential pressure between probe tip and case. The probe cable should be routed without sharp bends; the one-meter length eliminates the need for an extension cable. For nonincendive installations, follow drawing 140979 for power connections.
Maintenance & Reliability
Inspect the 330191-00-40-10-00 probe cable and connector annually for signs of wear or corrosion. The patented CableLoc design provides 330 N pull strength, reducing cable detachments. The PPS probe tip resists chemical attack, and the stainless steel case withstands harsh conditions. Regular calibration checks against the specified DC resistance ensure measurement accuracy over -55°C to +232°C range.
Selection Guide & Purchasing Advice
Before purchasing, verify that your system requires a Bently Nevada 330191-00-40-10-00 with 1.0 m total length and no armor. This probe uses a 3/8-24 UNF thread – confirm your mounting hole matches. For extended temperature applications, ensure the cable insulation type (FEP or PFA) meets your ambient environment. At PLC Source PRO, we stock new, original factory-packed units with a 12-month warranty, ready for immediate industrial application.