330191-00-08-15-00 Bently Nevada 3300 XL 8 mm ETR Probe

Product Overview: Bently Nevada 330191-00-08-15-00

The Bently Nevada 330191-00-08-15-00 is a 3300 XL 8 mm ETR proximity probe engineered for precise displacement and vibration measurement in industrial machinery. As part of the 3300 XL series, this probe delivers engineering-grade accuracy through its patented TipLoc and CableLoc designs. The TipLoc molding method creates a robust bond between the probe tip and body, while CableLoc provides 330 N (75 lbf) pull strength to secure the cable and tip. The 8 mm probe diameter offers thicker encapsulation of the probe coil in molded PPS plastic, resulting in a more rugged sensor. The larger body diameter also provides a stronger, more robust case for optimal physical abuse resistance. This probe is supplied new and original in factory packing with a 12-month factory warranty.

Key Specifications of the 330191-00-08-15-00

• Model: 330191 - 3300 XL 8 mm ETR Probe, 3/8-24 UNF thread, without armor
• Total Length: 1.5 meter (4.9 feet)
• Unthreaded Length: Minimum 0.0 in.
• Overall Case Length: Minimum 0.8 in.
• Power Requirement: -17.5 Vdc to -26 Vdc with nonincendive circuit per drawing 140979 at 12 mA maximum consumption; -23 Vdc to -26 Vdc with barriers
• Output Resistance: 50 Ω
• Nominal Probe DC Resistance: 7.73 ± 0.50 Ω at 1.5 m
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 303 or 304 stainless steel
• Standard Cable: 75 Ω triaxial, FEP insulated
• Connector Material: Gold-plated brass or gold-plated beryllium copper
• Maximum Connector Torque: 0.565 N•m (5 in•lbf)
• Agency Approval: 00 = Not required

Installation and Integration

Installing the 330191-00-08-15-00 requires attention to its power supply and mechanical interface. The probe operates with a -17.5 Vdc to -26 Vdc supply when connected to a nonincendive circuit per installation drawing 140979. Operation at a more positive voltage than -23.5 Vdc can result in reduced linear range. The 3/8-24 UNF thread ensures compatibility with standard mounting hardware, and the maximum thread engagement is 0.563 in. The probe case to probe lead tensile strength is rated at 330 N (75 lbf), while the probe lead to extension cable connectors are rated at 270 N (60 lbf). For integration with Bently Nevada extension cables and proximitors, the probe entity parameters are met when used with BN extension cables and connected to BN Prox. Note that one-meter systems do not use an extension cable. This probe is designed to seal differential pressure between the probe tip and case using a Viton O-ring; however, probes are not pressure tested prior to shipment.

Reliability and Environmental Considerations

The 330191-00-08-15-00 is built for harsh industrial environments. The probe tip is constructed from PPS, and the case from AISI 303 or 304 stainless steel, providing durability against physical and chemical exposure. The standard cable is 75 Ω triaxial with FEP insulation, while an extended temperature range cable option uses PFA insulation. The probe operates within a wide temperature range depending on the temperature classification. For EPL Ga and Gc, the ambient temperature range is -55°C to +232°C for T1, down to -55°C to +40°C for T5. For EPL Dc, the ranges vary from 280°C at -55°C to +232°C down to 90°C at -55°C to +40°C. These ratings ensure reliable performance in extreme conditions. Regular inspection of the probe tip and cable is recommended to maintain measurement accuracy and prevent unplanned downtime.