330191-00-33-10-00 | Bently Nevada 3300 XL 8 mm ETR Probe

Why Choose the 330191-00-33-10-00 for Your Vibration Monitoring?

When machinery reliability is non-negotiable, how do you ensure your vibration monitoring system captures accurate data without fail? The Bently Nevada 330191-00-33-10-00, a 3300 XL 8 mm ETR probe, answers that challenge with a design built for industrial endurance and precision. This proximity probe delivers dependable shaft vibration and position measurements, helping you avoid unplanned downtime and protect critical rotating equipment.

Product Overview

The 330191-00-33-10-00 is a genuine Bently Nevada 3300 XL 8 mm ETR probe with a 3/8-24 UNF thread, without armor. It comes as a 1.0 metre (3.3 feet) total length system, which means it does not require an extension cable. The probe is supplied new in original factory packing and includes a 12-month factory warranty.

This model features a patented TipLoc molding method that creates a robust bond between the probe tip and body, and a patented CableLoc design that provides 330 N (75 lbf) pull strength to secure the cable and tip. The larger 8 mm probe body offers a thicker encapsulation of the probe coil in molded PPS plastic, making it more rugged and resistant to physical abuse. Bently Nevada recommends 8 mm probes whenever possible for optimal robustness.

Technical Specifications

Key parameters of the 330191-00-33-10-00 include:

Power Supply: Requires -17.5 Vdc to -26 Vdc when installed with a nonincendive circuit per installation drawing 140979 at 12 mA maximum consumption; -23 Vdc to -26 Vdc with barriers. Operation at a more positive voltage than -23.5 Vdc can reduce linear range.

Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage.

Output Resistance: 50 Ω.

Nominal Probe DC Resistance (RPROBE): 7.59 Ω ± 0.50 for a 1.0 m probe.

Probe Tip Material: Polyphenylene sulfide (PPS).

Probe Case Material: AISI 303 or 304 stainless steel (SST).

Cable: 75 Ω triaxial, FEP insulated (standard) or PFA insulated (extended temperature range), in lengths 0.5, 1, 1.5, 2, 3, 5, or 9 meters.

Tensile Strength: 330 N (75 lbf) probe case to probe lead; 270 N (60 lbf) at probe lead to extension cable connectors.

Connector Material: Gold-plated brass or gold-plated beryllium copper.

Maximum Connector Torque: 0.565 N•m (5 in•lbf).

Probe Case Thread: 3/8-24 UNF, maximum thread engagement 0.563 in.

Probe Weight: 323 g/m (11.4 oz).

Temperature Schedule: Ambient temperature ranges from -55°C to +232°C (T1) down to -55°C to +40°C (T5) for EPL Ga/Gc, with specific classifications for EPL Dc.

These specifications ensure accurate and stable measurements even in demanding environments.

Industry Applications

The 330191-00-33-10-00 is ideal for monitoring shaft vibration and axial position in turbomachinery, compressors, pumps, and motors. In petrochemical plants, refineries, and power generation facilities, this probe helps detect rotor instability, misalignment, and bearing wear before they cause catastrophic failures. Its robust construction and high pull strength make it suitable for installations where mechanical stress or vibration is present.

Installation and Setup Guidance

Proper installation is critical for accurate readings. Ensure the probe gap is set according to the system calibration. Use the correct thread engagement (maximum 0.563 in) to avoid mechanical interference. The probe can be mounted with or without armor; if armor is required, choose the flexible AISI 302 or 304 SST option with FEP outer jacket. Always follow the manufacturer's installation drawing (e.g., 140979 for nonincendive circuits) and verify the power supply is within the specified range.

Maintenance and Reliability

Routine inspection of the probe and cable is recommended to ensure reliable operation. Check for signs of physical damage, cable wear, or connector corrosion. The probe's sealing design uses a Viton® O ring to prevent differential pressure leaks, but probes are not pressure tested prior to shipment—verify the seal integrity after installation. Periodic verification of the output signal and sensitivity can help detect drift early.

Compatibility and Integration

This probe is designed to work with Bently Nevada extension cables and proximity transducers (BN Prox). It is compatible with Bently Nevada monitoring systems that accept 3300 XL series inputs. For one-meter systems, no extension cable is needed, simplifying installation. Ensure your system's power supply meets the probe's requirements to maintain linear range.

Selection Guide and Purchasing Advice

Before ordering, confirm your required total length, thread type, and whether you need armor or agency approvals. The 330191-00-33-10-00 is a specific configuration with 1.0 m length and no armor; other options are available. BluePLC Industrial offers this genuine Bently Nevada probe in new, factory-packed condition with a 12-month warranty. Contact us to verify current lifecycle status and availability, and to discuss your application needs. We are your reliable partner for industrial automation parts.

For complete technical specifications, please contact BluePLC Industrial.