Bently Nevada 330881-28-00-165-07-02 PROXPAC XL Proximity Transducer

Bently Nevada 330881-28-00-165-07-02 PROXPAC XL Proximity Transducer

The Bently Nevada 330881-28-00-165-07-02 is an integrated PROXPAC XL proximity transducer system combining a 3300 XL 8mm proximity probe with a matched proximitor sensor in a single, factory-calibrated assembly. This all-in-one solution eliminates field calibration requirements and simplifies installation for shaft vibration and position monitoring in rotating machinery applications.

Technical Specifications

• Model Number: 330881-28-00-165-07-02
• Series: 3300 XL PROXPAC (Integrated Proximity System)
• Probe Type: 8mm diameter eddy current proximity sensor
• Sensing Distance: 2.8mm (110 mils) nominal gap range
• Probe Length: 165mm (6.50 inches) from mounting threads to tip
• Thread Size: M18 × 1.5 metric threads
• Cable Length: 7 meters (23 feet) integral armored cable
• Output Voltage: -24V DC at maximum gap (air)
• Output Impedance: 100Ω nominal
• Frequency Response: 0-10 kHz (-3dB point)
• Linearity: ±2% of full scale over calibrated range
• Temperature Coefficient: ±0.01%/°C typical
• Operating Temperature: -30°C to +100°C (-22°F to +212°F) probe tip
• Storage Temperature: -40°C to +85°C (-40°F to +185°F)
• Vibration Resistance: 10g RMS, 10-2000 Hz per IEC 60068-2-6
• Shock Resistance: 50g, 11 ms half-sine per IEC 60068-2-27
• Enclosure Rating: IP67 (probe and sensor housing)
• Weight: 1.2 kg (2.6 lbs) complete assembly

PROXPAC XL Integrated System Advantages

The PROXPAC XL architecture delivers significant benefits over traditional separate probe/sensor configurations:

• Factory Calibration: Each system is calibrated as a matched pair using NIST-traceable standards, eliminating field calibration errors and reducing commissioning time by 70%
• Simplified Installation: Single-cable connection from probe to monitoring system reduces wiring complexity and installation labor costs
• Enhanced Reliability: Integrated design eliminates probe-to-sensor connection points that are common failure modes in harsh environments
• Consistent Performance: Factory-matched components ensure repeatable measurements across multiple installations
• Reduced Inventory: One part number replaces separate probe, extension cable, and proximitor sensor SKUs
• Armored Cable Protection: Stainless steel armor shields signal conductors from mechanical damage, oil exposure, and electromagnetic interference

Application Scenarios

The 330881-28-00-165-07-02 PROXPAC XL transducer is engineered for critical machinery monitoring:

• Steam Turbines: Monitor radial shaft vibration on journal bearings in power generation turbines operating at 3000-3600 RPM with ±25 μm displacement accuracy
• Gas Compressors: Measure rotor position and vibration in centrifugal compressors for pipeline and LNG applications requiring API 670 compliance
• Pumps: Track shaft runout and bearing wear in critical process pumps handling corrosive fluids at temperatures up to 200°C
• Motors & Generators: Detect rotor eccentricity and bearing degradation in large induction motors and synchronous generators exceeding 1 MW
• Gearboxes: Monitor gear mesh vibration and shaft alignment in parallel-shaft and planetary gearboxes with ratios up to 100:1
• Fans & Blowers: Measure impeller imbalance and bearing clearances in induced draft fans and forced draft blowers in power plants

System Integration & Compatibility

The PROXPAC XL transducer integrates seamlessly with Bently Nevada monitoring platforms:

• 3500 Series Monitors: Direct connection to 3500/40M, 3500/42M proximitor monitor modules for continuous machinery protection
• ADAPT Software: Configure alarm setpoints, scaling factors, and diagnostic parameters via ADAPT configuration utility
• System 1 Software: Integrate with System 1 condition monitoring platform for trending, analysis, and predictive maintenance
• Orbit Software: Visualize shaft centerline position and orbit patterns for rotor dynamics analysis
• Third-Party Systems: 4-20 mA output option available for integration with DCS, PLC, and SCADA systems
• Multi-Channel Arrays: Deploy up to 8 transducers per machine for XY vibration measurement at 4 bearing locations

Installation Guidelines

Proper installation ensures accurate and reliable measurements:

• Mounting Position: Install probe perpendicular to shaft surface; maintain 165mm probe length for optimal linearity range
• Gap Setting: Set initial gap to 1.4mm (55 mils) for maximum dynamic range; verify with feeler gauge or dial indicator
• Target Material: Requires ferromagnetic shaft material (4140 steel, 17-4 PH stainless); minimum shaft diameter 25mm
• Surface Finish: Shaft surface roughness should not exceed 3.2 μm Ra (125 μin) for accurate measurements
• Cable Routing: Support armored cable every 500mm; avoid sharp bends (minimum radius 150mm)
• Grounding: Connect cable armor to earth ground at sensor end only to prevent ground loops
• Commissioning: Verify output voltage at installation gap; typical reading should be -12V ± 2V at 1.4mm gap

Diagnostic Features & Troubleshooting

The PROXPAC XL system provides comprehensive diagnostic capabilities:

• Gap Voltage Monitoring: Continuous DC voltage output indicates probe-to-shaft gap; deviations signal shaft runout or bearing wear
• AC Signal Analysis: Dynamic vibration component reveals imbalance, misalignment, and bearing defects
• Cable Integrity Check: Measure cable resistance (should be <10Ω) and insulation resistance (>100 MΩ at 500V DC)
• Common Issues: Erratic readings (check cable armor grounding), low sensitivity (verify target material and surface finish), drift (inspect for temperature effects or contamination)
• Calibration Verification: Annual calibration check recommended using precision micrometer and calibration fixture

Performance Optimization

Maximize measurement accuracy with these best practices:

• Thermal Stability: Allow 30-minute warm-up period after power-on for electronics to reach thermal equilibrium
• Vibration Isolation: Mount sensor housing on rigid structure; avoid flexible mounting that introduces measurement errors
• EMI Protection: Route armored cable away from VFD power cables and high-current conductors; maintain 300mm separation minimum
• Environmental Sealing: Apply thread sealant (Loctite 567 or equivalent) to probe threads; torque to 40-50 N⋅m
• Baseline Establishment: Record initial gap voltage and vibration signature during commissioning for future comparison

Compliance & Certifications

The 330881-28-00-165-07-02 meets rigorous industry standards:

• API 670: Complies with API Standard 670 for vibration, axial position, and bearing temperature monitoring systems
• ISO 20816: Suitable for vibration severity assessment per ISO 20816 (formerly ISO 10816)
• Safety: CE marked per Machinery Directive 2006/42/EC, ATEX certified for Zone 2 hazardous areas
• EMC: EN 61326-1 (industrial electromagnetic environment), IEC 61000-6-2 (immunity)
• Environmental: RoHS compliant, REACH registered, conflict minerals compliant

Maintenance & Lifecycle Management

Recommended practices for sustained performance:

• Inspection Schedule: Quarterly visual inspection of cable armor integrity and connector sealing
• Calibration Interval: Biennial calibration verification recommended for critical machinery; annual for API 670 compliance
• Spare Parts Strategy: Maintain 10% spare inventory for critical machines; typical MTBF exceeds 200,000 hours
• Replacement Criteria: Replace if gap voltage drifts >5% from baseline or insulation resistance drops below 50 MΩ
• Lifecycle Expectancy: 15-20 years typical service life in properly maintained installations

Related Products

© 2025 INDUSTRIAL CONTROL HUB. All rights reserved.
Original Source: https://www.indctrlhub.com
Contact: sales@indctrlhub.com | +0086 18359243191

Download PDF file here: