EPRO PR6423/011-130 CON021 Non-Contact Eddy Current Sensor – PR6423 Series
Imagine a 50,000 RPM steam turbine rotor running without any vibration feedback. Within seconds, a shaft imbalance goes undetected, bearing clearances exceed safe limits, and a catastrophic failure shuts down an entire power plant — costing hundreds of thousands of dollars in unplanned downtime and repairs. This is the reality that plant engineers face without a reliable eddy current sensor in the loop. The EPRO PR6423/011-130 CON021 eliminates that risk by delivering continuous, non-contact measurement of shaft vibration, axial displacement, and radial position — the three critical parameters that keep rotating machinery alive.
Within the PR6423 family — EPRO’s flagship eddy current sensor series trusted by OEMs and end-users across six continents — the PR6423/011-130 variant is engineered for standard 11 mm probe tip diameter applications with a 130 mm armored extension cable, paired with the CON021 signal conditioning module. This combination delivers a calibrated, linearized output signal ready for direct integration into Bently Nevada 3500 series monitors, EPRO MMS6000 systems, and virtually any 4–20 mA or voltage-input safety instrumented system. It is the go-to solution for turbine OEMs, petrochemical plant engineers, and rotating equipment reliability specialists worldwide.
Technical Specifications
- Manufacturer: EPRO (part of Baker Hughes / Bently Nevada ecosystem)
- Part Number: PR6423/011-130 CON021
- Sensor Type: Eddy Current (Non-Contact Proximity Probe)
- Probe Tip Diameter: 11 mm
- Extension Cable Length: 130 mm armored
- Conditioner: CON021 signal conditioning module
- Measurement Parameters: Shaft vibration, axial displacement, radial position
- Output Signal: Compatible with standard monitor input requirements (voltage/current)
- Target Material: Ferrous and non-ferrous metals
- Operating Temperature: Per EPRO PR6423 series datasheet
- Protection Class: Industrial-grade, suitable for harsh environments
- Weight: Approx. 650 g (complete assembly)
- Compliance: Designed for use in API 670-compliant machinery protection systems
Note: All specifications are based on published EPRO PR6423 series documentation. Contact us for the official datasheet.
Key Features & Benefits
- Non-Contact Measurement: Zero mechanical wear — the sensor never touches the rotating shaft, ensuring indefinite sensor life under normal operating conditions.
- High-Frequency Response: Capable of capturing high-speed vibration events that contact-based sensors miss, critical for turbomachinery running above 3,000 RPM.
- Armored Extension Cable: The 130 mm armored cable protects signal integrity in high-vibration, high-temperature, and chemically aggressive environments.
- CON021 Signal Conditioner: Provides linearized, calibrated output — plug-and-play compatibility with major machinery protection monitors without additional signal processing.
- API 670 Ready: Designed to meet the requirements of API Standard 670 for machinery protection systems in the oil & gas and power generation industries.
- Drop-in Replacement: Direct replacement for legacy EPRO and compatible Bently Nevada proximity probe assemblies — no re-wiring or re-calibration of the monitor required in most installations.
- Broad Target Compatibility: Works on both ferrous and non-ferrous shaft materials, including stainless steel, Inconel, and titanium alloys.
Industry & Equipment Applications
- Power Generation: Steam turbines, gas turbines, hydro generators — shaft vibration and axial position monitoring per API 670.
- Oil & Gas: Centrifugal compressors, expanders, and pipeline pumps in upstream, midstream, and downstream facilities.
- Petrochemical & Refining: Critical rotating equipment in ethylene crackers, refineries, and LNG terminals.
- Marine Propulsion: Shaft monitoring on large marine diesel engines and gas turbine propulsion systems.
- Industrial Manufacturing: High-speed spindles, paper machine rolls, and large industrial fans requiring continuous condition monitoring.
- Nuclear Power: Reactor coolant pump shaft monitoring in nuclear facilities requiring SIL-rated instrumentation.
System Integration & Compatible Parts
The PR6423/011-130 CON021 is designed for seamless integration into the following systems and is commonly ordered alongside these compatible components:
- Monitors: EPRO MMS6110, MMS6120, MMS6350; Bently Nevada 3500/42M, 3500/45
- Junction Boxes: EPRO PR9376 series field junction boxes
- Power Supplies: EPRO CON041 / CON011 series conditioner power modules
- Mounting Hardware: PR6423 series probe holders and bracket assemblies
- Related Sensors: PR6424 series (8 mm tip), PR6426 series (25 mm tip) for different gap range requirements
- DCS Integration: 4–20 mA output compatible with Siemens PCS7, Honeywell Experion, ABB 800xA, and Yokogawa CENTUM VP
Our Quality Assurance Process
At Konmask.com, every EPRO PR6423/011-130 CON021 unit goes through a rigorous multi-stage verification process before shipment:
- Source Verification: Units are sourced exclusively from authorized distributors and verified OEM channels with full traceability documentation.
- Visual & Physical Inspection: Each unit is inspected for connector integrity, cable armor condition, probe tip condition, and label authenticity.
- Functional Pre-Check: Where applicable, units are bench-tested for basic electrical continuity and conditioner output signal verification.
- Documentation Package: Every shipment includes available test certificates, material certificates, and country-of-origin documentation upon request.
- Secure Packaging: Anti-static, shock-absorbing packaging with humidity indicators for international air and sea freight.
How to Order
- Submit an Inquiry: Use the contact form on this page or email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quotation: Our technical sales team will respond within 24 hours with pricing, lead time, and availability confirmation.
- Order Confirmation: Confirm your purchase order via email or our online checkout. Proforma invoice issued for wire transfer or credit card payment.
- Shipment & Tracking: Units are dispatched via DHL Express, FedEx International Priority, or sea freight — with full tracking provided.
- After-Sales Support: Our engineering team is available post-delivery for installation guidance and system integration support.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, and condition monitoring components — not a generalist marketplace.
- Global Reach, Local Expertise: Serving clients in 40+ countries with export documentation, customs support, and multilingual technical assistance.
- Competitive Lead Times: Most in-stock items ship within 3–5 business days. Expedited options available for urgent plant shutdowns.
- Technical Pre-Sales Support: Our engineers can verify compatibility with your existing monitor and DCS before you commit to a purchase.
- Transparent Sourcing: We provide full supply chain documentation — no grey-market or counterfeit risk.
Frequently Asked Questions
Q: Is the PR6423/011-130 CON021 a direct replacement for Bently Nevada proximity probes?
A: In most API 670 installations, yes. The PR6423 series is designed to be interchangeable with standard 11 mm proximity probe assemblies. However, we recommend verifying the gap voltage range and sensitivity (mV/mil or mV/μm) with your monitor manufacturer before installation.
Q: What is the difference between PR6423/011-130 and PR6423/011-100?
A: The suffix “130” and “100” refer to the armored extension cable length in millimeters. The /011-130 has a 130 mm extension cable, while the /011-100 has a 100 mm extension. Choose based on the physical distance between your probe mounting point and the junction box or conditioner location.
Q: Can this sensor be used on non-ferrous shafts such as titanium or Inconel?
A: Yes. Eddy current sensors work on all electrically conductive materials. However, the sensitivity (scale factor) varies by target material. EPRO provides material-specific calibration curves — contact us for the appropriate calibration data for your shaft material.
Q: Do you provide a warranty on EPRO products?
A: All units sold through Konmask.com carry a minimum 12-month warranty against manufacturing defects. Extended warranty options are available — contact our sales team for details.
Q: How do I verify the authenticity of the unit I receive?
A: Each genuine EPRO unit carries a unique serial number traceable to the manufacturer. We provide the serial number and available documentation upon request. Our sourcing process includes supplier audits to ensure product authenticity.
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