EMERSON PR6423/10R-010CON021 Eddy Current Proximity Sensor | Replacement, Equivalent & Selection Guide
The EMERSON PR6423/10R-010CON021 is a high-precision eddy current (non-contact) proximity sensor designed for continuous shaft vibration and displacement monitoring in rotating machinery. Widely deployed in turbines, compressors, pumps, and critical industrial drives, this sensor is a core component of Emerson’s Bently Nevada 3300 XL series monitoring systems.
At Konmask.com, we supply both original OEM units and rigorously verified compatible equivalents — helping maintenance engineers and procurement teams source the right part quickly, with full technical confidence.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EMERSON (Bently Nevada) |
| Part Number / SKU | PR6423/10R-010CON021 |
| Series | PR6423 / 3300 XL Eddy Current |
| Sensor Type | Eddy Current Non-Contact Proximity Sensor |
| Tip Diameter | 10 mm (Ø10R) |
| Cable Length | 1.0 m (010 = 1.0 m extension) |
| Connector Type | CON021 — Standard coaxial connector |
| Measuring Range | 0 – 2 mm (linear range) |
| Output Signal | –24 VDC (nominal), voltage proportional to gap |
| Sensitivity | 7.87 V/mm (200 mV/mil) |
| Operating Temperature | –35°C to +120°C |
| Target Material | Steel / Stainless Steel (AISI 4140 reference) |
| Protection Rating | IP67 |
| Weight | Approx. 360 g (with cable) |
| Compliance | CE, RoHS |
Compatible Replacement & Equivalent Models
The following models are functionally compatible with the PR6423/10R-010CON021 and can serve as direct or near-direct replacements in most Bently Nevada 3300 XL installations. Always verify gap calibration and driver compatibility before substitution.
| Model | Brand | Tip Dia. | Cable | Compatibility Note |
|---|---|---|---|---|
| PR6423/10R-010CON021 | EMERSON (OEM) | 10 mm | 1.0 m | Original — reference unit |
| PR6423/10R-005CON021 | EMERSON | 10 mm | 0.5 m | Shorter cable variant |
| PR6423/10R-020CON021 | EMERSON | 10 mm | 2.0 m | Longer cable variant |
| 3300 XL 8mm Proximity Sensor | Bently Nevada | 8 mm | Various | Smaller tip; check mounting clearance |
| PR6424/010-010CN | EPRO (Emerson) | 10 mm | 1.0 m | EPRO series equivalent; same driver |
| CS-1 / CS-3 Series | Metrix / Bently | 8–11 mm | Various | Third-party compatible; verify driver |
⚠ Note: Always confirm driver/conditioner compatibility (e.g., 3300 XL driver) when selecting an equivalent model.
Why Choose the Original PR6423/10R-010CON021
- Factory-calibrated to Bently Nevada 3300 XL system standards — zero re-calibration required on installation.
- Guaranteed sensitivity linearity across the full 0–2 mm measurement range.
- Certified IP67 ingress protection for harsh industrial environments.
- Full OEM traceability — traceable lot numbers, certificates of conformance available on request.
- Plug-and-play with existing 3300 XL drivers, monitors, and junction boxes.
Typical Applications
- Shaft radial vibration monitoring on steam and gas turbines
- Rotor displacement measurement on centrifugal compressors
- Axial position sensing on large pumps and fans
- Differential expansion monitoring in power generation equipment
- Critical machinery protection systems (API 670 compliant installations)
System Compatibility
The PR6423/10R-010CON021 is designed to operate within the Bently Nevada 3300 XL Monitoring System ecosystem. Confirmed compatible components include:
- 3300 XL 8 mm / 11 mm Proximity Transducer System drivers
- 3500/42M Proximitor I/O Module
- 3500/25 Keyphasor Module
- System 1 Condition Monitoring Software
- TDXnet and 3300 XL junction boxes
For non-Bently Nevada systems, consult the driver datasheet to confirm –24 VDC supply and 200 mV/mil sensitivity compatibility.
Selection Guide
Use the following decision matrix to select the correct PR6423 variant for your application:
| Requirement | Recommended Model |
|---|---|
| Standard 1.0 m cable, 10 mm tip | PR6423/10R-010CON021 ✓ (this product) |
| Shorter cable needed (0.5 m) | PR6423/10R-005CON021 |
| Longer cable needed (2.0 m) | PR6423/10R-020CON021 |
| Tighter mounting space (8 mm tip) | PR6423/08R-xxx or 3300 XL 8mm series |
| Budget-sensitive / third-party | EPRO PR6424 or Metrix CS series (verify driver) |
| High-temperature environment (>120°C) | Contact Konmask for high-temp variants |
Quality Assurance & Sourcing
All units supplied by Konmask.com undergo the following verification process:
- ✅ Visual and dimensional inspection against OEM drawings
- ✅ Electrical continuity and impedance check
- ✅ Sensitivity verification (200 mV/mil ± 1%)
- ✅ Anti-static packaging with humidity indicator card
- ✅ Certificate of Conformance (CoC) available on request
We source directly from authorized distributors and verified surplus channels. All products carry a 12-month warranty against manufacturing defects.
How to Order
- Confirm your part number: PR6423/10R-010CON021
- Specify quantity and required delivery timeline
- Add to cart or contact us for bulk/project pricing
- Receive CoC and packing list with shipment
📧 Email: [email protected]
📞 Phone/WhatsApp: +0086 19859288691
🌐 Website: https://Konmask.com
Replacement & Compatibility FAQ
Q: Can I use the PR6423/10R-010CON021 as a direct replacement for a PR6424 series sensor?
A: The PR6424 (EPRO series) uses the same 200 mV/mil sensitivity and –24 VDC supply, making cross-compatibility possible in most cases. However, verify the connector type and cable length before installation.
Q: Does this sensor require recalibration after replacement?
A: OEM units are factory-calibrated and typically do not require recalibration when replacing a like-for-like unit in a 3300 XL system. A gap check (typically 1.0 mm nominal) is recommended after installation.
Q: What is the target material requirement?
A: The sensor is calibrated for AISI 4140 steel. For stainless steel or other alloys, a material correction factor may apply — consult the Bently Nevada calibration guide or contact Konmask for support.
Q: Is this sensor API 670 compliant?
A: Yes, when used within a certified Bently Nevada 3300 XL system, the installation meets API 670 (5th Edition) requirements for machinery protection systems.
Q: Can Konmask supply the matching driver/conditioner?
A: Yes. We can supply the complete 3300 XL proximity transducer system including driver, extension cable, and junction box. Contact us for a complete BOM quote.
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