Turbine Shaft Vibration Monitoring Solution – EMERSON PR6423/10R-131 CON031 | Eddy Current Sensor Series
Where This Product Is Used
The EMERSON PR6423/10R-131 CON031 Eddy Current Sensor is engineered for continuous, non-contact displacement and vibration measurement in rotating machinery. Typical deployment environments include:
- Steam & Gas Turbines — Radial shaft vibration and axial position monitoring on high-speed rotors
- Centrifugal Compressors — Real-time shaft orbit tracking in oil & gas compression trains
- Pumps & Blowers — Continuous bearing clearance and rotor displacement surveillance
- Power Generation Plants — Integration with turbine protection systems (TPS) per API 670
- Petrochemical & Refinery Units — Machinery health monitoring in hazardous-area installations
- Marine Propulsion Systems — Shaft alignment verification and dynamic runout measurement
This sensor is a direct-fit replacement for existing EMERSON / Bently Nevada PR6423 series installations, maintaining full signal compatibility with CON031 extension cables and standard 3300/3500 series monitors.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EMERSON (Bently Nevada) |
| Part Number | PR6423/10R-131 |
| Cable / Extension | CON031 |
| Sensor Type | Eddy Current (Proximity Probe) |
| Tip Diameter | 10 mm |
| Nominal Gap Range | 0.25 – 2.25 mm (10 – 90 mil) |
| Sensitivity | 7.87 V/mm (200 mV/mil) |
| Frequency Response | DC – 10,000 Hz |
| Operating Temperature | -35°C to +120°C |
| Supply Voltage | -24 VDC (nominal) |
| Output Signal | -2 VDC to -18 VDC (linear range) |
| Target Material | AISI 4140 steel (standard); other alloys with calibration |
| Weight | 280 g (sensor + cable assembly) |
| Ingress Protection | IP67 |
| Connector | Standard BNC / integral cable |
Why Engineers Specify This Model
- Non-contact measurement — Zero mechanical wear; suitable for continuous 24/7 operation on critical rotating assets
- High linearity — ±1% full-scale linearity ensures accurate displacement readings across the full gap range
- Wide frequency bandwidth — DC to 10 kHz captures both slow-roll runout and high-frequency sub-synchronous instabilities
- Direct system compatibility — Plug-and-play with Bently Nevada 3300 XL, 3500 series monitors and CON031 extension cables without recalibration
- Robust construction — Stainless steel housing with IP67 sealing rated for oil mist, steam, and washdown environments
- Proven field reliability — PR6423 series has decades of installed base in API 670-compliant machinery protection systems worldwide
Complete System Bill of Materials
A fully functional eddy current measurement chain using this sensor typically includes:
- Proximity Probe: PR6423/10R-131 (this item)
- Extension Cable: CON031 (matched cable, specify length: 1 m / 3 m / 5 m / 9 m)
- Proximitor / Driver: Bently Nevada 3300 XL 8mm or 3500/42M Proximitor module
- Monitor Rack: Bently Nevada 3500 Series Machinery Protection System
- Mounting Hardware: Probe holder, lock nut, and armored conduit fittings (application-specific)
- Target Surface: Machined journal surface per API 670 Annex D finish requirements
Contact support@konmask.com for complete BOM quotations and system integration support.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition): sensor and system design compliance
- IEC 60079 — Explosive atmospheres; ATEX / IECEx certification available on request
- ISO 10816 / ISO 20816 — Mechanical vibration evaluation of machinery
- CE Marking — Electromagnetic compatibility (EMC) and low-voltage directive compliance
- RoHS — Restriction of Hazardous Substances compliant
Quality Assurance & Sourcing
Konmask.com sources the PR6423/10R-131 CON031 exclusively through verified industrial distribution channels and authorized surplus networks. Every unit offered is subject to:
- Visual and dimensional inspection against OEM datasheets
- Functional continuity and insulation resistance verification
- Traceability documentation (lot number, date code, origin) provided on request
- Secure anti-static packaging with humidity indicator cards for long-term storage integrity
- 30-day return policy for DOA (Dead on Arrival) units with full inspection report
How to Source This Part
- Request a Quote — Email support@konmask.com with your required quantity, delivery timeline, and any certification requirements
- Stock Confirmation — Our team confirms availability and lead time within 1 business day
- Proforma Invoice — Issued with full part traceability details and payment terms
- Secure Payment — T/T bank transfer, PayPal, or trade assurance accepted
- Shipping — DHL / FedEx express worldwide; export documentation (CO, packing list, commercial invoice) included
- After-Sales Support — Technical assistance for installation, gap setting, and system integration available post-delivery
Application-Specific FAQ
Q: Is the PR6423/10R-131 compatible with non-steel target materials such as titanium or Inconel?
A: The standard calibration is optimized for AISI 4140 steel. For titanium, Inconel, or other alloys, a material-specific calibration curve is required. Contact us for custom-calibrated units.
Q: Can this sensor be used in ATEX Zone 1 hazardous areas?
A: ATEX-certified variants of the PR6423 series are available. Please specify your zone classification and gas group when requesting a quote so we can confirm the correct certified assembly.
Q: What is the maximum cable extension length with CON031?
A: The CON031 extension cable is available in standard lengths up to 9 m. Total probe + extension cable system length must match the Proximitor driver calibration. Mixing lengths from different calibration sets will affect accuracy.
Q: How do I set the correct gap voltage during installation?
A: The nominal installation gap for a 10 mm probe is typically 1.0 mm (–10 VDC output). Use a non-ferrous feeler gauge and a calibrated DC voltmeter on the Proximitor output. Refer to Bently Nevada Installation Manual 141536-01 for detailed procedures.
Q: Does Konmask.com offer exchange or repair services?
A: We offer outright sale and exchange programs. Repair services for EMERSON / Bently Nevada sensors are available through our partner network. Contact us for pricing and turnaround time.
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