Product Specification Document: Bently Nevada 330108-91-05

1. Product Overview

2. Basic Product Information

Manufacturer and Model Identity

• Manufacturer: Bently Nevada (Emerson Automation Solutions)

• Product Series: 3300 XL Proximity Transducer System

• Model Number: 330108-91-05

• Product Type: 8 mm Eddy Current Proximitor Sensor (Probe + Extension Cable + Proximitor)

• Compatibility: Bently Nevada 3300/3500 Series Monitoring Systems; 8 mm target shafts (ferromagnetic materials)

Electrical Ratings

• Power Supply: 24 V DC (nominal; range 9–32 V DC)

• Power Consumption: ≤150 mA @ 24 V DC

• Output Signal: Linear voltage (7.87 V/mm / 200 mV/mil); optional 4–20 mA with external converter

• Measurement Principle: Eddy current induction (non-contact)

• Frequency Response: 0 Hz (static) to 10 kHz (dynamic)

• Probe Cable Length: 9.1 m (30 ft) (fixed, integrated)

Physical and Mechanical

• Probe Dimensions: 8 mm diameter × 112 mm length (M12 × 1 mm thread)

• Extension Cable: 6.4 mm diameter, PTFE insulation, stainless-steel braid, 9.1 m length

• Proximitor Dimensions: 125 mm × 70 mm × 60 mm (W × H × D)

• Net Weight: ~1.2 kg (2.64 lb) (complete assembly)

• Enclosure Rating: IP67 (probe and cable); IP20 (proximitor)

• Probe Housing Material: 316 stainless steel (corrosion-resistant)

• Mounting: Threaded probe mounting (M12); DIN-rail or panel mounting for proximitor

Compliance and Certification

• Standards: ISO 10816, API 670, IEC 61000-6-2, CE marked (EMC, LVD)

• Environmental: RoHS compliant; conformal coating on proximitor PCB

• Certifications: cULus, ATEX (optional for hazardous areas)

3. Function and Product Positioning

Core Measurement Functions

• Shaft Vibration Monitoring: Captures dynamic radial vibration (amplitude, frequency, phase) in rotating equipment, detecting imbalance, misalignment, bearing wear, or rubs.

• Static Shaft Position: Measures steady-state shaft displacement (eccentricity, thrust position) to monitor bearing clearance and thermal growth.

• Keyphasor Reference: Provides a once-per-revolution pulse for phase angle and speed calculation, critical for vibration analysis and balancing.

• Speed Measurement: Derives rotational speed from Keyphasor pulses for overspeed protection and operational monitoring.

Operational Features

• Linear Performance: Maintains linear output over 0–2.5 mm (0–100 mil) gap range with ±0.25% full-scale linearity.

• High Resolution: Delivers 0.1 μm resolution for precise gap and vibration measurements.

• Self-Diagnostics: Built-in fault detection for open/short circuits, cable damage, and power supply issues; outputs fault signals to monitoring systems.

• Rugged Environmental Tolerance: Operates reliably in temperatures from -40°C to +85°C and 5%–95% non-condensing humidity.

Product Positioning

• Continuous machinery health monitoring (predictive maintenance)

• Real-time protection for high-speed rotating equipment

• Vibration analysis and troubleshooting

• Compliance with API 670 and industry safety standards

4. Core Performance Parameters

Measurement Performance

• Probe Diameter: 8 mm (5/8 in)

• Linear Gap Range: 0–2.5 mm (0–100 mil)

• Sensitivity: 7.87 V/mm (200 mV/mil)

• Linearity: ±0.25% full-scale (0–2.5 mm)

• Repeatability: ±0.05% full-scale

• Frequency Response: DC to 10 kHz (±3 dB)

• Target Material: Ferromagnetic steel (4140, 1045; non-ferrous requires calibration)

Environmental Limits

• Operating Temperature: -40°C to +85°C (probe/cable); -40°C to +70°C (proximitor)

• Storage Temperature: -55°C to +100°C

• Relative Humidity: 5%–95% RH (non-condensing)

• Vibration Resistance: 25 g (5 Hz–2 kHz); 50 g shock (11 ms half-sine)

• EMI Immunity: Meets IEC 61000-6-2 for industrial noise environments

Reliability

• MTBF: >200,000 hours (25°C, full load)

• Warranty: 1 year (standard); extended warranties available

• Lifecycle Status: Active production (widely supported in new and legacy systems)

5. General Matching Accessories

Installation and Mounting

• M12 probe mounting hardware kit (nuts, lock washers, brackets)

• Proximitor DIN-rail mounting adapter

• Cable clamping and strain relief kit (for high-vibration areas)

• Hazardous-area mounting gland (ATEX/IECEx certified)

Monitoring System Compatibility

• Bently Nevada 3300/3500 Series Vibration Monitoring Modules

• 4–20 mA signal converter (for PLC/DCS integration)

• Keyphasor signal conditioner (for speed/phase output)

• Probe gap calibration tool (for on-site setup)

Maintenance and Spares

• Replacement probe tips (8 mm, stainless steel)

• Cable repair kit (PTFE insulation, stainless-steel braid)

• Proximitor conformal coating touch-up kit

• Calibration verification certificate (annual service)

Documentation and Software

• 330108-91-05 datasheet and installation manual

• Bently Nevada 3300 Series system planning guide

• Proximity sensor calibration software (for setup)

• Factory test and calibration report (included with unit)

6. Applicable Equipment and Industry Fields

Primary Applications

• Power Generation: Steam/gas turbines, generators, and large compressors in thermal, hydro, and wind power plants.

• Oil and Gas: Centrifugal compressors, pumps, and turbines in refineries, offshore platforms, and pipelines.

• Petrochemical: Reactors, mixers, and process compressors requiring continuous vibration and position monitoring.

Secondary Applications

• Process Industries: Water treatment pumps, pharmaceutical mixers, and food/beverage processing machinery.

• Manufacturing: High-speed machine tools, printing presses, and textile machinery for vibration control.

• Marine: Ship propulsion turbines, generators, and cargo pumps for condition monitoring.

Compatibility Notes

• 8 mm Probe Requirement: Designed exclusively for 8 mm target shafts; not compatible with 5 mm or 11 mm probe systems.

• Ferromagnetic Targets: Optimized for carbon steel; non-ferrous targets (aluminum, copper) require custom calibration.

• System Dependence: Requires a Bently Nevada 3300/3500 Series monitor or compatible signal conditioner for power and signal processing.