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• Brand: Bently Nevada
• Series: 3300 XL Proximity Probe Series
The 3300 XL series is a family of high‑precision proximity transducers and sensors used in industrial machinery condition monitoring. This series is designed for accurate displacement and vibration measurement of rotating shafts in critical machinery across heavy industry.
The Bently Nevada 330104‑00‑06‑90‑02‑00 is a rugged eddy current proximity probe engineered to measure shaft vibration and radial displacement on rotating equipment. It provides continuous analog output signals that correspond to extremely small changes in gap between the probe tip and a conductive target surface. The probe uses an eddy current sensing principle, which generates a high‑frequency electromagnetic field that varies with changes in distance to the target.
With durable construction and high measurement fidelity, this proximity probe is suitable for long‑term monitoring in demanding industrial environments. The model designation indicates specific mechanical and electrical configurations, including a 90 m cable length and a particular connector style optimized for long reach installations. The 3300 XL family is known for compatibility with standard monitoring and protection systems, enabling integration into machinery protection, diagnostic, and predictive maintenance platforms.
The 330104‑00‑06‑90‑02‑00 proximity probe is used in environments where continuous machinery health monitoring is essential. Common applications include:
• Monitoring shaft displacement and vibration on steam, gas, and hydro turbines used in power generation facilities.
• Vibration analysis on centrifugal compressors in oil refineries, petrochemical plants, and pipeline booster stations.
• Shaft position monitoring on large industrial pumps handling high flow rates in water treatment and process industries.
• Diagnostics of electric motors and generators in manufacturing and industrial drive systems.
• Rolling element bearings and journal bearings on high speed rotating equipment where early detection of imbalance and misalignment prevents costly failures.
• Bearing clearance and rotor rub detection in gear trains, blowers, fans, and drive systems.
• Precise Measurement: Detects minute changes in shaft position with high linearity and repeatability.
• Robust Industrial Design: Built to withstand vibration, temperature extremes, and exposure to industrial contaminants.
• Extended Cable Length: With a 90 m cable, the unit supports installations where equipment is located far from monitoring cabinets without intermediate signal degradation.
• Seamless System Integration: Designed for integration with industry standard monitoring and protection modules in the 3300 XL architecture.
• Long Service Life: Low drift over time, minimal recalibration needs, and solid‑state construction contribute to reduced maintenance costs.
• Versatile Deployment: Applicable across broad machinery types and industrial sectors, supporting predictive maintenance strategies.
| Parameter | Specification |
|---|---|
| Model | 330104‑00‑06‑90‑02‑00 |
| Sensor Type | Eddy Current Proximity Probe |
| Measurement Range | ±2.54 mm (±0.100 in) |
| Frequency Response | 0.5 Hz to 12 kHz |
| Linearity | ±1 % of full scale |
| Probe Body Diameter | 12.7 mm (0.50 in) |
| Probe Length | 50 mm |
| Cable Length | 90 m |
| Connector / Termination | Standard industrial connector (02‑00 configuration) |
| Operating Temperature | –40 °C to +125 °C |
| Weight (kg) | 0.65 |
| Mounting | Threaded barrel or clamp mount |
| Output | Differential AC signal |
| Target Material | Conductive rotating shaft surfaces |
| Model | Measurement Range | Cable Length | Weight (kg) | Notes |
|---|---|---|---|---|
| 330104‑00‑06‑50‑02‑CN | ±2.54 mm | 2 m | 0.35 | Standard proximity probe |
| 330104‑00‑06‑12‑05 | ±2.54 mm | 12 m | 0.38 | Mid‑length cable variant |
| 330104‑00‑06‑20‑00 | ±2.54 mm | 20 m | 0.40 | Long‑reach installation model |
| 330106‑00‑06‑50‑05‑10 | ±2.54 mm | 10 m | 0.40 | Extended cable alternative |
| 330108‑00‑08‑50‑02‑CN | ±3.81 mm | 2 m | 0.41 | Larger displacement range |
Each model listed above shares the core sensing principle and form factor but differs in cable length, sensing range, or connector configuration to suit a range of installation and measurement scenarios within the same series family.
| Model | Type | Key Parameter | Weight (kg) | Notes |
|---|---|---|---|---|
| 3500/05 | Velocity Vibration Sensor | 0–100 mm/s RMS | 0.50 | Velocity sensor for general vibration monitoring |
| 3500/22M | Accelerometer | ±50 g range | 0.45 | High sensitivity accelerometer |
| 330200‑00‑10‑50‑02‑CN | Proximity Probe | ±2.54 mm, 10 m cable | 0.39 | Alternate proximity variant |
| 3500/72M | Machinery Protection Relay | Multi‑channel protection | 1.20 | Protection and alarm module |
| 330100‑00‑06‑50‑02‑CN | Proximity Probe | ±2.54 mm, standard cable | 0.36 | Base model within the proximity family |
QA1: What is the primary measurement function of the 330104‑00‑06‑90‑02‑00?
A1: It measures shaft displacement and vibration using eddy current principles, generating analog signals corresponding to proximity variation between the probe tip and the rotating shaft.
QA2: Why would a 90 m cable length be used?
A2: Long cable lengths are beneficial in facilities where machinery monitoring racks are located far from the equipment, such as in large power plants or extended process lines.
QA3: Can this probe be used on any rotating machine?
A3: Yes, provided the equipment requires displacement or vibration monitoring within the specified range and environmental conditions.
QA4: What operating temperature range can this probe withstand?
A4: The unit is designed to operate reliably in temperatures from approximately –40 °C up to +125 °C.
QA5: How should the probe be mounted?
A5: Mounting is typically done using threaded barrels or clamps that secure the probe orientated toward the target shaft surface.
QA6: Does the probe require recalibration?
A6: Periodic verification is recommended as part of a plant’s maintenance schedule, though frequent recalibration is not typically necessary due to low drift characteristics.
QA7: Is this model compatible with standard condition monitoring systems?
A7: Yes, it integrates with common monitoring and protection modules designed for the 3300 XL series sensors.
QA8: What kinds of mechanical faults can this sensor help detect?
A8: It supports detection of imbalance, misalignment, bearing clearance changes, rub conditions, and other dynamic shaft behaviors.
QA9: Can it measure both vibration and position?
A9: The primary output is displacement; vibration data is derived from time‑based analysis of displacement changes.
QA10: What precautions are recommended during installation?
A10: Ensure proper alignment of the probe with the target surface, secure mounting to minimize extraneous vibration, and appropriate strain relief for long cable runs to maintain signal integrity.