PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring
PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring - Image 2
PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring - Image 3
PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring - Image 4
PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring - Image 5

PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring

  1. PR6424/010-000 + CON021 – 11mm probe, bare cable end complete set (Target Model)
  2. PR6424/010-030 – 11mm probe, 3m armored cable with LEMO plug
  3. PR6424/010-110 – 11mm probe, 5m armored cable with LEMO plug
  4. PR6424/004-010 – 11mm probe, 1m armored cable with LEMO plug
  5. PR6423/003-030 – classic 8mm standard vibration probe
  6. CON011 – alternative compatible preamplifier for PR6424 probe
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Description

PR6424/010-000 + CON021 EPRO 11mm Eddy‑Current Probe (Open Cable End) + Preamplifier, Non‑Contact Shaft Displacement Sensor for Radial Vibration, Axial Thrust & Differential Expansion Monitoring

 

Product Application

PR6424/010-000 is the 11mm medium‑size eddy‑current probe of EPRO with open bare cable termination (without LEMO plug at probe side, field wiring or extension cable configurable). Matched with CON021 preamplifier to form a complete calibrated measurement chain. Widely deployed on steam turbines, gas turbines, centrifugal compressors, blowers and large pumps in petrochemical, oil & gas and thermal power plants. Typical measuring parameters: X/Y orthogonal radial vibration, axial thrust position, differential expansion and shaft eccentricity. Gap voltage signal from CON021 is sent to Emerson CSI6500 TSI monitoring modules such as A6110, A6120 for machinery alarm and trip protection; vibration waveform data is uploaded to AMS predictive maintenance platform. The full set meets API 670 turbomachinery protection specification.

PR6424010-000+CONO21

Product Specifications

  • Part Number: PR6424/010-000 + CON021
  • Brand: Emerson EPRO, Made in Germany
  • Probe Tip Diameter: 11 mm ceramic tip
  • Cable Termination: Bare open cable end (suffix -000 = no LEMO plug at probe end, user defines cable length / add extension cable on site)
  • Linear Measuring Range: ±4 mm
  • Sensitivity: 2 V/mm
  • Nominal Center Static Air Gap: approx. 5.5 mm
  • Probe Head Operating Temperature: -35 ℃ ~ +180 ℃
  • Preamplifier Model: CON021, powered by -24 VDC
  • Output Signal: Gap voltage signal to TSI monitor via BNC coaxial cable
  • Compatible Monitoring Rack: CSI 6500, legacy MMS6000
  • Certification: API 670, CE, ATEX / IECEx hazardous zone approval
  • Probe Protection: IP67, oil‑resistant for bearing housing installation

 

Core Technical Parameters

  • Measuring Range: ±4 mm
  • Sensitivity: 2 V/mm
  • Frequency Response: DC ~ 10 kHz (-3dB)
  • Probe Housing: Stainless steel body
  • Cable: Stainless steel armored + PTFE high temperature insulation, lubricating oil resistant
  • CON021 Working Temperature: -25 ℃ ~ +70 ℃
  • Minimum ferromagnetic target shaft diameter: ≥45 mm
  • Diagnostics: Probe cable break / short‑circuit detection (probe + CON021 + TSI module)
  • Gross Weight of full set: approx. 0.7 kg

 

Recommended Matching Models (8 Models)

Complete TSI system spare parts for this probe assembly:

  1. A6110 Dual‑Channel Relative Shaft Vibration Monitor (CSI6500)
  2. A6120 Axial Thrust / Differential Expansion Monitor
  3. A6312 Speed & Keyphasor Module
  4. A6740 Relay Output Module for Alarm & Trip
  5. CSI 6500 Rack & Backplane
  6. BNC coaxial signal cable ( to TSI rack)
  7. AMS Suite Machinery Health Software
  8. Dynamic vibration calibrator for measurement loop calibration

 

Product Features

✅ 11mm Medium‑Size Ceramic Tip Larger than standard 8mm PR6423 probe, stable electromagnetic field, excellent signal quality for medium‑diameter rotating shafts.

✅ Wide ±4mm Linear Measurement Range Suitable for axial thrust and differential expansion measurement with large shaft displacement, not limited to radial vibration only.

✅ Open Bare Cable End Design No pre‑fitted LEMO plug on probe cable end. Engineers can cut cable length on site or add extension cable freely for complex bearing housing wiring layout.

✅ Each probe‑preamplifier pair is calibrated before delivery to guarantee 2 V/mm sensitivity accuracy.

✅ High Temperature & Oil Resistant Assembly Probe head can continuously withstand 180℃; armored PTFE cable resists lubricating oil corrosion inside bearing housing.

✅ Built‑in Cable Fault Diagnosis Cooperated with CSI6500 TSI module to detect probe cable open circuit and short circuit, report sensor failure alarm in time.

✅ Hazardous Zone Certified Suitable for Zone 2 / Class I Div 2 explosive gas area installation in petrochemical plants.

PR6424010-000+CONO21

Installation Guidelines

  1. Install rigid probe bracket on bearing housing, avoid bracket resonance at unit operating speed.
  2. Mount PR6424/010-000 probe on bracket, adjust static gap between probe tip and shaft target surface to around 5.5 mm, lock the lock nut.
  3. Route armored cable, avoid sharp bending and heavy extrusion; terminate bare cable end to preamplifier terminals correctly.
  4. Mount preamplifier in junction box away from high‑temperature radiation.
  5. Connect signal output to front BNC port of CSI6500 TSI module with dedicated coaxial cable.
  6. Power on CSI6500 rack, read gap voltage value on AMS workstation and confirm probe works within linear interval.
  7. Perform dynamic test during turbine / compressor startup.
  8. Verify vibration value, displacement reading and alarm trip logic before putting machinery protection online.

 

Maintenance Instructions

Daily Maintenance Monitor real‑time gap voltage and measurement value in AMS software. Check bracket looseness, armored cable oil erosion and wiring terminal oxidation.

Periodic Maintenance Every 6–12 months: Inspect probe tip scratch and oil sludge contamination. Calibrate the whole probe‑‑TSI measurement loop with dynamic calibrator. Back up CSI6500 project configuration.

Fault Maintenance

  • Gap voltage out of linear range: Check bracket loosening, shaft runout or probe collision.
  • No measurement signal: Inspect cable terminal connection, cable breakage and power supply.
  • Signal drift: Clean oil sludge on probe tip or replace probe assembly.
  • ESD protection required during replacement; do not disassemble probe head and housing.

Long‑Term Operation Tips Respect cable minimum bending radius. Prevent lubricating oil long‑term immersion on cable terminals. Regularly check bracket resonance under working speed.

 

Brand Same‑Series Models (6 Models)

EPRO PR6424 11mm eddy‑current probe variants:

  1. PR6424/010-000 + CON021 – 11mm probe, bare cable end complete set (Target Model)
  2. PR6424/010-030 – 11mm probe, 3m armored cable with LEMO plug
  3. PR6424/010-110 – 11mm probe, 5m armored cable with LEMO plug
  4. PR6424/004-010 – 11mm probe, 1m armored cable with LEMO plug
  5. PR6423/003-030 – classic 8mm standard vibration probe
  6. CON011 – alternative compatible preamplifier for PR6424 probe

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