EPRO PR6423/10R-030-CN CON021 Eddy Current Sensor | Replacement, Equivalent & Selection Guide
The EPRO PR6423/10R-030-CN CON021 is a high-precision eddy current (non-contact) displacement sensor manufactured by EPRO (part of Baker Hughes / Bently Nevada ecosystem). It is widely deployed in turbomachinery protection and condition monitoring systems for measuring shaft radial vibration, axial position, and differential expansion. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EPRO (Baker Hughes) |
| Part Number | PR6423/10R-030-CN |
| Extension Cable / Con | CON021 |
| Sensor Type | Eddy Current (Non-contact) Displacement Sensor |
| Probe Diameter | 10 mm |
| Cable Length | ~3.0 m (030 = 3 m extension) |
| Measurement Range | 0–2 mm (typical linear range) |
| Sensitivity | 8 mV/µm (nominal) |
| Operating Temperature | -35°C to +120°C (probe); -35°C to +85°C (cable) |
| Target Material | Steel / Stainless Steel (AISI 4140 reference) |
| Output Signal | Voltage (DC), compatible with EPRO CON021 conditioner |
| Connector Type | CN (Chinese market connector variant) |
| IP Rating | IP67 (probe head) |
| Compliance | API 670, CE |
| Weight | ~500 g (probe + cable assembly) |
Compatible Replacement & Equivalent Models
The following models are functionally equivalent or drop-in compatible with the PR6423/10R-030-CN CON021, subject to conditioner and system verification:
| Brand | Model | Notes |
|---|---|---|
| EPRO | PR6423/10R-060-CN CON021 | Same probe, 6 m cable — verify cable length requirement |
| EPRO | PR6423/10R-030-CN CON011 | Different conditioner (CON011); check system conditioner compatibility |
| Bently Nevada | 330101-00-06-10-02-00 | 3300 XL 8 mm probe series; functionally equivalent for most API 670 systems |
| Bently Nevada | 330130-040-00-00 | 3300 XL 11 mm probe; verify gap and sensitivity calibration |
| Metrix | ST5484E-111-000-00 | Eddy current sensor, API 670 compliant; confirm conditioner pairing |
| Wilcoxon / Amphenol | PC420 Series | Alternative for non-critical monitoring; not API 670 certified |
| Shinkawa | VE-3500 Series | Japanese equivalent; widely used in Asian turbomachinery OEM |
⚠ Important: Always verify probe-conditioner pairing before replacement. Mixing incompatible probes and conditioners will result in incorrect output scaling and potential system trips.
Why Choose the Original Model
- API 670 Certified: Meets the industry standard for machinery protection systems — mandatory for many power generation and petrochemical installations.
- Proven Field Reliability: EPRO PR6423 series has decades of deployment history in gas turbines, steam turbines, compressors, and pumps worldwide.
- Factory Calibration: Each unit is factory-calibrated against a certified target material, ensuring measurement accuracy from day one.
- System Integration: Designed for seamless integration with EPRO MMS 6000 / MMS 3000 and compatible Bently Nevada 3500 series monitoring systems.
- Long-term Support: Genuine EPRO parts carry manufacturer traceability and are supported by Baker Hughes global service network.
Typical Applications
- Shaft radial vibration measurement on gas turbines, steam turbines, and centrifugal compressors
- Axial position (thrust) monitoring on rotating machinery
- Differential expansion measurement on large turbine casings
- Eccentricity monitoring during turbine startup/shutdown
- Speed and phase reference (keyphasor) in conjunction with appropriate conditioners
- Petrochemical plant rotating equipment per API 670 requirements
- Power generation — combined cycle, nuclear auxiliary, and hydro applications
System Compatibility
| Monitoring System | Compatibility | Notes |
|---|---|---|
| EPRO MMS 6000 | ✅ Native | Designed for this system; plug-and-play with CON021 |
| EPRO MMS 3000 | ✅ Compatible | Verify conditioner card slot assignment |
| Bently Nevada 3500 Series | ✅ Compatible | Use with 3500/25 or 3500/40M I/O modules; confirm scaling |
| Bently Nevada 3300 Series | ⚠ Partial | Requires conditioner adapter; consult engineering |
| Emerson AMS 6500 | ✅ Compatible | Via standard eddy current input card |
| Metso / Neles Automation | ⚠ Verify | Confirm input card voltage range and scaling |
| Custom PLC / DCS Input | ⚠ Conditional | Requires 4–20 mA converter or direct voltage input card |
Selection Guide
Use the following decision tree to confirm the correct model for your application:
- Probe Diameter: PR6423 = 10 mm. If your installation requires 5 mm or 8 mm, select PR6422 or PR6424 series respectively.
- Cable Length: The “030” suffix = 3 m extension cable. Available in 030 (3 m), 050 (5 m), 060 (6 m), 090 (9 m). Match to your probe-to-conditioner distance.
- Connector Variant: “CN” = Chinese market connector. For international standard connector, select the non-CN variant. Verify physical connector compatibility with your conditioner.
- Conditioner: CON021 is the standard conditioner for PR6423. CON011 is an alternative — do not mix without recalibration.
- Target Material: Calibrated for AISI 4140 steel. If your shaft is stainless steel, Inconel, or titanium, a material correction factor or recalibration is required.
- Certification Requirement: For API 670 systems, only use genuine EPRO or certified equivalent (Bently Nevada 3300 XL / 3500 series). Non-certified alternatives are not suitable for SIL-rated protection loops.
Quality Assurance & Sourcing
- Source: Konmask.com sources EPRO PR6423 series from authorized distributors and verified surplus channels with full traceability documentation.
- Inspection: All units undergo visual inspection, connector integrity check, and where applicable, functional verification prior to dispatch.
- Documentation: Certificate of conformance (CoC) and original manufacturer datasheet available upon request.
- Warranty: 12-month warranty against manufacturing defects. Warranty void if unit is modified or installed outside specified parameters.
- Lead Time: In-stock units ship within 1–3 business days. Out-of-stock items: 2–6 weeks depending on sourcing channel.
How to Order
- Confirm your full part number: PR6423/10R-030-CN CON021 (probe + conditioner assembly).
- Specify quantity and required documentation (CoC, datasheet, test report).
- Contact us via the form below, email, or phone for a formal quotation.
- For urgent requirements, indicate your required delivery date — we will advise on expedite options.
- Payment terms: T/T (bank transfer), PayPal, or trade credit (approved accounts). LC available for orders above USD 5,000.
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Replacement & Compatibility FAQ
Q: Can I use a Bently Nevada 330101 probe as a direct replacement for the PR6423/10R-030-CN?
A: In most cases yes, for API 670 systems. However, sensitivity (mV/µm) and gap settings must be re-verified. The BN 330101 is an 8 mm probe vs. the 10 mm PR6423 — physical installation clearance must be confirmed.
Q: Is the CON021 conditioner included in this listing?
A: This listing covers the complete assembly (probe + CON021 conditioner + extension cable). If you need the probe only or conditioner only, please contact us for separate part pricing.
Q: Can the PR6423/10R-030-CN be used with a Bently Nevada 3500 system?
A: Yes, with appropriate scaling configuration on the 3500/25 or 3500/40M I/O module. Consult your system integrator for channel configuration.
Q: What is the difference between CON011 and CON021?
A: CON021 provides a wider operating temperature range and improved EMC performance. CON011 is an older generation conditioner. They are not interchangeable without recalibration.
Q: Do you provide calibration certificates?
A: Factory calibration data is available for new units. For recalibration services, we can refer you to accredited calibration labs in China and internationally.
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