EPRO PR6423-002/110 16mm Electromagnetic Vibration Sensor Probe
I. Brand and Model Code Explanation
Brand: German EPRO (now part of Emerson Emerson), originally from the Philips Rotating Machinery Monitoring Product Line technology base
Model Segments: PR6423-002/110
PR6424: Standard series of 16mm large-sized sensing head, suitable for large shaft diameters, large range shaft vibration / axial displacement measurement
002: Hardware configuration code – 16mm probe, M18×1.5 installation thread, armored high-temperature integrated cable
141: Complete configuration suffix: Total cable length 14 meters, LEMO standard coaxial plug, non-explosion-proof basic industrial type
PR6424 probe set
Core Electrical Measurement Parameters
Measurement Principle: Electromagnetic Induction Non-contact Type
Induction Head Diameter: 16 mm
Standard Sensitivity: 4 V/mm (tolerance ±5%)
Linear Measurement Range: Static ±2 mm, Dynamic Peak-to-Peak 0 – 1000 μm
Standard Installation Center Air Gap: 2.7 mm
Calibration Reference Material: 42CrMo4 alloy steel shaft
Minimum Compatible Shaft Diameter: ≥80 mm, Surface Linear Speed of Shaft 0 – 2500 m/s
Frequency Response: 0 – 20 kHz (-3dB)
Long-Term Stability Drift: ≤0.3%, Excellent Temperature Drift Control
Linear Accuracy Error: ≤±1.5% Full Measurement Range
Environmental and Material Specifications
Temperature Tolerance
Long-term operation of the probe: -35℃ ~ +180℃; Instantaneous and short-term maximum 200℃
Cable Tolerance: PTFE high-temperature sheath, suitable for the surrounding of high-temperature steam turbine cylinders
Structural Material
Shell: 304 Stainless Steel; Head Insulation: High-temperature engineering plastic; Armored Metal Tubing: Protective for Cable from Rolling and Abrasion
Protection and Certification
Compliant with API 670, DIN 45670, ISO 10817-1 Rotating Machinery Monitoring Standards; Ordinary Industrial IP Protection, additional suffix required for explosion-proof
Cable Configuration
Integrated Armored Cable with a total length of 14m, standard LEMO aviation connector at the end, direct insertion compatible with CON series preamplifiers
Must be Paired with Preamplifier
Complete TSI Monitoring Set:
Probe: PR6424/002-141
Preamplifier: CON011 / CON021 / CON031 (Most commonly used CON021, IP20 cabinet type)
Back-end Monitoring Framework: VM600, MMS6000 System Rack Acquisition Module
Factory Complete Calibration, Pairing for Use without on-site re-calibration
Measurement Application Scenarios
Steam Turbine, Gas Turbine Axial Thrust Displacement (Axial Displacement)
Large-sized Compressor, Fan, Generator Radial Axial Vibration
Unit Thermal Expansion Difference, Eccentricity, Oil Film Gap Monitoring
Applicable Industries: Thermal Power, Hydropower, Chemicals, Refining, Air Separation, Heavy-duty Rotating Machinery Protection and Interlock







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