EPRO PR6424/010-010 CON021 Eddy Current Sensor | Replacement, Equivalent & Selection Guide
The EPRO PR6424/010-010 CON021 is a high-precision eddy current proximity sensor designed for non-contact displacement and vibration measurement in rotating machinery and turbomachinery protection systems. This page provides full technical specifications, compatible replacement models, application guidance, and sourcing information to help engineers and procurement teams make confident selection decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EPRO (Baker Hughes / Bently Nevada compatible) |
| Part Number | PR6424/010-010 CON021 |
| Sensor Type | Eddy Current Proximity Sensor |
| Measurement | Radial vibration, axial position, differential expansion |
| Tip Diameter | Ø8 mm (PR6424 series) |
| Cable Length | 1.0 m (extension cable matched to CON021 driver) |
| Linear Range | Approx. 0–2 mm (target material dependent) |
| Sensitivity | ~8 mV/µm (with matched driver) |
| Supply Voltage | −24 VDC (via CON021 driver/conditioner) |
| Output Signal | Voltage proportional to gap distance |
| Operating Temp. | −40 °C to +120 °C |
| Protection Class | IP67 |
| Connector | MIL-C-5015 style (matched to CON021) |
| Weight | ~200 g (sensor + cable assembly) |
| Compliance | API 670, CE |
Note: Specifications may vary by target material and installation gap. Always verify with the system datasheet.
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as replacements or equivalents for the EPRO PR6424/010-010 CON021. Compatibility depends on driver pairing, cable length, and system configuration — always verify before substitution.
| Model | Brand | Compatibility Notes |
|---|---|---|
| PR6424/010-010 CON011 | EPRO | Same sensor, different driver — verify conditioner compatibility |
| PR6424/010-010 CON031 | EPRO | Extended cable variant; confirm system cable length requirements |
| PR6424/012-010 CON021 | EPRO | Longer tip variant; check installation clearance |
| 330180-91-00 | Bently Nevada | 8 mm eddy current sensor; widely used as functional equivalent |
| 330101-00-06-10-02-00 | Bently Nevada | 3300 XL 8 mm series; confirm driver and gap calibration |
| CS-1 / CS-2 | Metrix / Wilcoxon | Alternative eddy current sensors; require recalibration |
⚠ Important: Sensor, extension cable, and driver/conditioner must be purchased and calibrated as a matched system. Mixing unmatched components will result in measurement errors.
Why Choose the Original Model
- Factory-matched system: PR6424/010-010 + CON021 driver are calibrated as a set, ensuring API 670-compliant accuracy out of the box.
- Proven reliability: EPRO sensors are deployed globally in gas turbines, steam turbines, compressors, and pumps.
- OEM traceability: Original part numbers are required for many plant maintenance records and insurance compliance.
- Long service life: Robust IP67 construction withstands harsh industrial environments including oil mist, high humidity, and vibration.
- Direct drop-in fit: No mechanical modification required when replacing like-for-like in existing EPRO installations.
Typical Applications
- Radial shaft vibration monitoring on gas and steam turbines
- Axial position (thrust) measurement on compressors and pumps
- Differential expansion monitoring on large rotating machinery
- Speed and phase reference measurement (keyphasor)
- Machinery protection systems per API 670
- Petrochemical, power generation, and LNG plant installations
System Compatibility
The PR6424/010-010 CON021 sensor is designed to operate within the EPRO MMS 6000 / MMS 6350 machinery monitoring system and is also compatible with:
- EPRO CON021 / CON011 / CON031 signal conditioners (driver electronics)
- Bently Nevada 3300 / 3500 series monitoring racks (with appropriate driver substitution and recalibration)
- Emerson Machinery Health Manager (MHM) platforms
- Third-party DCS/PLC systems accepting ±voltage or 4–20 mA conditioned output
Always confirm the driver output range and system input card specifications before integration.
Selection Guide
Use the following criteria to select the correct EPRO PR6424 variant for your application:
| Selection Factor | Guidance |
|---|---|
| Tip diameter | PR6424 = Ø8 mm; PR6423 = Ø5 mm; PR6426 = Ø14 mm |
| Cable length | 010 = 1.0 m; 030 = 3.0 m; 050 = 5.0 m (match to extension cable) |
| Driver/conditioner | CON021 = standard; CON011 = legacy; CON031 = high-temp variant |
| Target material | Steel (AISI 4140) standard; specify if using stainless or non-ferrous |
| Mounting thread | M10×1 standard; confirm with installation drawing |
| Operating temperature | Standard: −40 to +120 °C; high-temp versions available on request |
Not sure which variant fits your system? Contact our technical team with your existing part number, installation drawing, or monitoring rack model.
Quality Assurance & Sourcing
- Authentic parts: All EPRO sensors sourced through authorized distribution channels with full traceability.
- Inspection: Each unit undergoes incoming inspection including visual check, connector verification, and documentation review.
- Packaging: Original OEM packaging preserved where available; anti-static and moisture-proof packaging for all shipments.
- Documentation: Certificate of conformance (CoC) and datasheet available upon request.
- Lead time: In-stock units ship within 1–3 business days; sourced units typically 2–4 weeks.
How to Order
- Confirm the exact part number: PR6424/010-010 CON021 (sensor + cable + driver set).
- Specify quantity and required delivery date.
- Contact us via the form below, email, or phone for a formal quotation.
- Provide your shipping address and preferred freight method (DHL / FedEx / sea freight).
- Payment: T/T bank transfer or as agreed; invoice issued upon order confirmation.
📧 [email protected] | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I use a Bently Nevada 330180 as a direct replacement for the EPRO PR6424/010-010?
A: Functionally similar, but the two systems use different driver electronics. A matched Bently Nevada driver and recalibration are required. Not a plug-and-play swap.
Q: Can I replace just the sensor without replacing the extension cable and driver?
A: Not recommended. The sensor, extension cable, and driver form a calibrated system. Replacing only the sensor may introduce measurement offset errors.
Q: What is the standard gap setting for the PR6424/010-010?
A: Typically 1.0–1.5 mm for steel targets, corresponding to the mid-range of the linear output. Refer to the EPRO installation manual for target-specific gap tables.
Q: Do you supply the CON021 driver separately?
A: Yes. The CON021 conditioner/driver can be sourced separately. Please specify when ordering.
Q: Is this sensor suitable for use in hazardous (Ex) areas?
A: EPRO offers ATEX/IECEx-certified variants. Please confirm your area classification and we will advise the correct certified model.
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