Turbine Shaft Vibration Monitoring Solution — EPRO PR6423/004-010 CON021 | PR6423 Series
Where This Product Is Used
The EPRO PR6423/004-010 CON021 eddy current proximity transducer is engineered for continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion in rotating machinery. Typical deployment environments include:
- Steam & Gas Turbines — shaft eccentricity and radial vibration monitoring per API 670
- Centrifugal Compressors — rotor dynamic displacement measurement in petrochemical plants
- Large Pumps & Fans — bearing journal orbit analysis in power generation facilities
- Hydro Turbines — axial thrust and guide-bearing clearance monitoring
- Industrial Gearboxes — gear mesh frequency and shaft runout detection
- Marine Propulsion Systems — continuous shaft position feedback in offshore platforms
This sensor is fully compatible with EPRO MMS 6000 and Bently Nevada 3300/3500 series monitoring systems, making it a direct fit for existing plant protection architectures.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PR6423/004-010 CON021 |
| Manufacturer | EPRO (Baker Hughes / GE Bently Nevada Compatible) |
| Series | PR6423 |
| Sensor Type | Eddy Current Proximity Transducer |
| Probe Tip Diameter | 4 mm |
| Cable Length | 1.0 m (extension cable CON021) |
| Measuring Range | 0.25 – 2.25 mm (nominal linear range) |
| Sensitivity | 8 mV/µm (nominal) |
| Supply Voltage | −24 VDC (via conditioner/driver) |
| Output Signal | −2 VDC to −18 VDC (proportional to gap) |
| Frequency Response | DC to 10 kHz (−3 dB) |
| Operating Temperature | −40 °C to +120 °C (probe); −40 °C to +85 °C (cable) |
| IP Rating | IP67 |
| Connector | CON021 standard EPRO connector |
| Weight | 240 g (approx.) |
| Target Material | Steel / Stainless Steel (AISI 4140 recommended) |
Why Engineers Specify This Model
- 4 mm Probe Tip — ideal for tight bearing housings where larger probes cannot be installed without shaft modification
- CON021 Connector System — field-proven, vibration-resistant locking connector eliminates signal dropout in high-vibration environments
- Wide Temperature Range — rated to 120 °C probe tip temperature, suitable for hot-section turbine bearing pedestals
- Direct System Compatibility — plug-and-play with EPRO MMS 6000, CON041 drivers, and Bently Nevada 3300 XL 8 mm systems (with appropriate driver)
- API 670 Compliant Design — meets the machinery protection standard required by EPC contractors and end-user specifications globally
- Non-Contact Measurement — zero mechanical wear, no lubrication required, continuous online monitoring without process interruption
Complete System Bill of Materials
A complete eddy current measurement chain requires the following components. Konmask.com stocks all items:
- Proximity Probe: PR6423/004-010 CON021 (this item)
- Extension Cable: PR6422/010-010 (10 m) or PR6422/005-010 (5 m)
- Driver / Signal Conditioner: CON041 or PR6426/010-040
- Monitor Module: EPRO MMS 6110 (radial vibration) or MMS 6120 (axial position)
- Rack / Chassis: MMS 6000 19″ rack system
- Mounting Hardware: PR9376 probe holder bracket (stainless steel)
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition)
- IEC 60068-2 — Environmental Testing (vibration, shock, temperature)
- ATEX / IECEx — consult factory for zone-rated variants
- CE Marking — EMC Directive 2014/30/EU compliant
- RoHS — Restriction of Hazardous Substances compliant
Quality Assurance & Sourcing
Konmask.com sources the PR6423/004-010 CON021 exclusively through verified industrial distribution channels. Every unit shipped undergoes the following before dispatch:
- Visual and dimensional inspection against OEM datasheet tolerances
- Continuity and insulation resistance check on probe cable and connector
- Packaging integrity verification — original OEM packaging preserved where available
- Batch traceability record retained for 5 years
We do not sell counterfeit, refurbished-as-new, or specification-downgraded parts. All products carry a 12-month warranty against manufacturing defects.
How to Source This Part
- Add to Cart — click the purchase button above to place an order directly
- Request a Quote — for volume orders (5+ units) or project BOM pricing, email support@konmask.com
- Lead Time — standard stock items ship within 3–5 business days; expedited options available
- Export & Customs — we handle export documentation (HS Code 9031.80) for international shipments including EU, Southeast Asia, and Middle East
- Technical Pre-Sales Support — our engineers can confirm compatibility with your existing monitoring system before purchase
Application-Specific FAQ
Q: Is the PR6423/004-010 CON021 compatible with Bently Nevada 3300 series monitors?
A: The PR6423 series uses EPRO’s signal conditioning chain (CON041 driver). Direct connection to Bently Nevada 3300 monitors requires a compatible driver module. Contact us to confirm your specific system configuration.
Q: What is the difference between PR6423/004-010 and PR6423/004-030?
A: The suffix after the dash indicates cable length — /004-010 has a 1.0 m integral cable, while /004-030 has a 3.0 m cable. The probe tip diameter (4 mm) and sensitivity are identical.
Q: Can this sensor be used on non-ferrous target materials such as aluminum or titanium?
A: Eddy current probes are sensitive to target material conductivity and permeability. EPRO provides calibration curves for non-standard target materials. Contact our technical team for application-specific calibration data.
Q: What is the maximum shaft speed this sensor can monitor?
A: The PR6423 has a frequency response of DC to 10 kHz, supporting shaft speeds well beyond 100,000 RPM for vibration frequency components. Consult the OEM datasheet for your specific application.
Q: Do you provide ATEX-certified versions for hazardous area installation?
A: ATEX/IECEx zone-rated variants exist within the PR6423 family. Please specify your hazardous area classification when requesting a quote.
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