EPRO PR6424/010-120+CON011 Eddy Current Sensor System (Industrial-Grade Vibration Monitoring)

The EPRO PR6424/010-120+CON011 delivers a factory-calibrated eddy current measurement solution combining the 16mm PR6424 proximity sensor with the extended-range CON011 signal converter. This integrated system excels in turbomachinery vibration analysis, compressor protection schemes, and critical rotating equipment monitoring where measurement accuracy and extended displacement range are non-negotiable.

Designed for high-vibration environments and transient operating conditions, this system captures displacement events that standard-range converters miss—from startup thermal growth to surge-induced excursions—while maintaining linearity and resolution for steady-state monitoring. Factory matching eliminates field calibration uncertainties and accelerates commissioning timelines.

Whether you're protecting centrifugal compressors, monitoring steam turbine thrust position, or implementing active magnetic bearing control, the PR6424/CON011 combination provides the measurement headroom, signal fidelity, and long-term reliability your critical assets demand.

Core Features & Technical Advantages

✓ Extended Measurement Range Architecture
CON011 converter supports up to 16mm displacement measurement (model-dependent), capturing large transient events during startup, shutdown, and abnormal operating conditions without signal saturation or clipping.

✓ High-Sensitivity 16mm Sensor Platform
4 V/mm (101.6 mV/mil) sensitivity with ±1.5% linearity delivers precise vibration amplitude measurement for shafts 80mm diameter and larger, optimized for medium to large rotating machinery.

✓ Wide Frequency Response for Dynamic Events
DC to 10 kHz (-3dB) bandwidth captures both slow thermal drift and high-frequency blade-pass vibration, enabling comprehensive machinery diagnostics from a single measurement channel.

✓ Factory-Matched Calibration
Sensor and converter calibrated as a system at the factory, ensuring impedance matching, linearity verification, and documented traceability—eliminating field calibration errors and reducing installation time by 40%.

✓ Rugged Industrial Construction
Operates reliably from -35°C to 150°C at the sensor head and -30°C to 100°C at the converter, with 10,000 hPa pressure rating and aluminum alloy housing for harsh industrial environments.

✓ Universal Monitoring System Integration
-2V to -18V or -4V to -20V output interfaces directly with DCS, PLC, and dedicated vibration monitoring platforms—no signal conditioning required.

Typical Application Scenarios

→ Centrifugal Compressor Surge Protection
Challenge: Surge events generate displacement spikes exceeding standard measurement ranges, causing signal saturation and protection system blind spots.
Solution: CON011's extended range captures full surge displacement amplitude while maintaining accuracy during normal operation, enabling reliable trip logic and post-event analysis.
Value: Prevents catastrophic compressor damage, reduces unplanned downtime, and provides forensic data for root cause analysis.

→ Steam Turbine Thrust Bearing Monitoring
Challenge: Axial rotor position varies significantly during load changes and startup/shutdown, requiring both extended range and high resolution.
Solution: PR6424/CON011 system tracks thrust position across full operating envelope, detecting bearing wear progression and preventing rotor-to-stator contact.
Value: Extends bearing life by 25-35%, enables predictive maintenance scheduling, and protects against $500K+ turbine damage events.

→ Active Magnetic Bearing Control Systems
Challenge: Magnetic bearing controllers demand continuous position feedback with extended range for safe landing during power loss or system faults.
Solution: 10 kHz bandwidth and extended measurement range provide the speed and headroom required for closed-loop control and emergency landing detection.
Value: Ensures safe rotor touchdown, protects bearing surfaces, and meets control system reliability requirements for critical machinery.

→ Reciprocating Compressor Crosshead Monitoring
Challenge: Crosshead displacement combines slow thermal growth with high-amplitude reciprocating motion, challenging standard proximity systems.
Solution: Extended range accommodates thermal expansion while DC-coupled response tracks reciprocating motion for wear detection and alignment verification.
Value: Reduces crosshead bearing failures by 40%, optimizes lubrication intervals, and prevents frame damage from misalignment.

Technical Parameters & Selection Guide

Selection Criteria:

• Choose PR6424 16mm sensor for shaft diameters 80mm and larger
• Select CON011 converter when displacement exceeds ±2mm during transients or abnormal conditions
• Verify target surface is clean ferromagnetic steel (42CrMo4 / AISI 4140 preferred)
• Confirm mounting space accommodates 120mm sensor length and 3/4"-16 UNF threading
• Ensure control system accepts -2V to -18V or -4V to -20V input signals

Extended Functionality & System Integration

Advanced Signal Conditioning
CON011 incorporates temperature compensation algorithms that maintain ±2% linearity across the full -30°C to 100°C operating range, eliminating thermal drift errors that compromise measurement accuracy in variable-temperature environments.

EMI/RFI Noise Rejection
Multi-stage filtering and shielded housing design reject electrical noise from VFDs, motor drives, and high-voltage switchgear—critical for installations in electrically noisy industrial environments where signal integrity determines protection system reliability.

Cable Length Flexibility
Maintains specified performance with cable runs up to 10 meters, enabling flexible sensor placement and centralized converter mounting in control rooms or junction boxes without signal degradation.

Multi-Sensor Compatibility
CON011 converter works with PR6422, PR6423, PR6424, PR6425, and PR6426 sensor families, providing upgrade paths and standardization opportunities across mixed machinery installations.

Delivery Timeline & Service Guarantee

Standard Delivery: 3-5 business days for in-stock factory-sealed systems via express courier with tracking
Custom Configurations: 2-3 weeks for special cable lengths, connector types, or extended-range converter variants
Warranty Coverage: 12-month manufacturer warranty covering materials and workmanship defects
Technical Support: Lifetime application engineering support including system sizing, installation guidance, and troubleshooting assistance
Documentation Package: Factory calibration certificate, installation drawings, wiring diagrams, and configuration records included with every system

Frequently Asked Questions

Q: How does the CON011 converter differ from the standard CON021 model?
A: CON011 provides extended measurement range (up to 16mm vs. 4mm standard) and enhanced signal processing for applications with large displacement transients, startup/shutdown monitoring, or abnormal operating conditions. CON021 is optimized for standard vibration monitoring within ±2mm displacement range.

Q: What shaft diameter range is optimal for the 16mm PR6424 sensor?
A: PR6424 performs best on shafts 80mm diameter and larger. For smaller shafts (40-80mm), consider PR6423 11mm sensor. For very large shafts (150mm+), PR6425 or PR6426 sensors may provide better coverage and installation flexibility.

Q: Can I replace just the converter or sensor if one component fails?
A: Yes, components are individually replaceable. However, replacing the complete system maintains factory calibration and ensures optimal performance. If replacing only one component, field calibration verification is recommended to confirm system accuracy.

Q: What target surface preparation is required for accurate measurement?
A: Target surface should be clean, smooth ferromagnetic steel with surface finish better than 3.2 μm Ra. Remove any coatings, rust, or contamination. Minimum target area is 3x sensor diameter (48mm for PR6424). Avoid measurements over keyways, oil holes, or surface discontinuities.

Q: How do I integrate this system with my existing DCS or PLC?
A: CON011 output (-2V to -18V or -4V to -20V) connects directly to standard analog input modules. Configure your input card for the appropriate voltage range, apply any required scaling factors based on the calibration certificate, and set alarm thresholds according to machinery protection requirements.

Q: What maintenance does an eddy current measurement system require?
A: Minimal maintenance required due to non-contact operation. Quarterly inspection of sensor tip and target surface for contamination, semi-annual air gap verification, and annual cable/connector inspection typically suffice. Bi-annual calibration verification recommended for critical protection applications.

Request Technical Consultation & Pricing

Our application engineering team provides expert guidance on eddy current system selection, sensor positioning optimization, and integration with your existing monitoring infrastructure. Contact us with your machinery specifications, operating conditions, and measurement requirements for personalized recommendations and competitive system pricing.

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