EPRO PR6423/01R-040 + CON021 Eddy Current Proximity Sensor | Replacement, Equivalent & Selection Guide
The EPRO PR6423/01R-040 is a high-precision eddy current proximity probe designed for non-contact displacement and vibration measurement in rotating machinery. Paired with the CON021 signal conditioning converter, this system delivers reliable shaft displacement monitoring in turbines, compressors, pumps, and other critical industrial equipment. Konmask.com supplies genuine and compatible units with full technical support.
Technical Specifications
- Manufacturer: EPRO (part of Baker Hughes / Bently Nevada ecosystem)
- Model: PR6423/01R-040
- Conditioner: CON021
- Sensor Type: Eddy Current (Inductive Proximity)
- Measurement Range: 0–40 mm (nominal)
- Cable Length: 1 m (standard; custom lengths available)
- Output Signal: 4–20 mA / Voltage (conditioner-dependent)
- Operating Temperature: −40 °C to +120 °C
- Protection Rating: IP67
- Thread / Housing: M12 stainless steel
- Weight: Approx. 260 g (probe + cable assembly)
- Compliance: CE, RoHS
Compatible Replacement & Equivalent Models
The following models are functionally equivalent or drop-in replacements for the EPRO PR6423/01R-040 CON021 system. Always verify mounting dimensions, cable length, and conditioner compatibility before substitution.
- Bently Nevada 330101-00-06-10-02-00 — 3300 XL 8 mm proximity transducer; same eddy current principle, compatible with most DCS/PLC inputs
- EPRO PR6423/00R-040 — Non-reverse polarity variant; electrically equivalent in most applications
- EPRO PR6424/010-040 — Extended range version (0–80 mm); suitable when larger air gaps are required
- Emerson CSI 6500 Proximity Probe — Compatible with Emerson machinery health platforms
- Metrix ST5484E — Industrial-grade eddy current sensor; compatible 4–20 mA output
- Wilcoxon Research 786A — Alternative for vibration-only applications
Note: Cross-referencing requires matching sensitivity (mV/mm), gap range, and conditioner input impedance. Contact Konmask for a verified compatibility check.
Why Choose the Original EPRO PR6423/01R-040 CON021
- ✅ Factory-calibrated sensitivity — 8 mV/µm guaranteed linearity across full range
- ✅ Proven in API 670 machinery protection systems — Meets turbomachinery standards
- ✅ Plug-and-play with EPRO MMS 6000 / CON021 conditioners — No re-calibration needed
- ✅ Stainless steel housing — Corrosion-resistant for harsh process environments
- ✅ Long-term availability — Konmask maintains stock for MRO and emergency replacement
Typical Applications
- Steam and gas turbine shaft radial/axial displacement monitoring
- Centrifugal compressor rotor position measurement
- Pump and motor bearing vibration surveillance
- Gearbox and fan shaft eccentricity detection
- API 670-compliant machinery protection systems
System Compatibility
- Conditioners: EPRO CON021, CON041, MMS 6120, MMS 6220
- Monitors: EPRO MMS 6000 series, Bently Nevada 3500 series, Emerson AMS 6500
- DCS/PLC Inputs: 4–20 mA analog input modules (Siemens, ABB, Rockwell, Honeywell)
- SCADA: Compatible with Modbus RTU/TCP via signal conditioner gateway
Selection Guide
Use the table below to select the correct EPRO PR6423 variant for your application:
| Parameter | PR6423/00R-040 | PR6423/01R-040 | PR6424/010-040 |
|---|---|---|---|
| Polarity | Standard | Reverse | Standard |
| Range | 0–40 mm | 0–40 mm | 0–80 mm |
| Cable | 1 m | 1 m | 1 m |
| Conditioner | CON021 | CON021 | CON041 |
| Best For | Standard mounting | Reverse-mount turbines | Large-gap applications |
Custom cable lengths (3 m, 5 m, 9 m) and extension cables available — contact us for a quote.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or OEM-certified supply chains
- Each sensor undergoes incoming inspection: continuity, insulation resistance, and sensitivity verification
- Traceable documentation (CoC, test reports) available upon request
- 12-month warranty on genuine EPRO units; 6-month warranty on compatible equivalents
- Export compliance: HS Code 9031.80 — precision measurement instruments
How to Order
- Confirm your required model: PR6423/01R-040 (probe) + CON021 (conditioner)
- Specify cable length and any extension cable requirements
- Add to cart or contact us for bulk/OEM pricing
- Receive order confirmation with lead time and tracking within 24 hours
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I use PR6423/01R-040 with a Bently Nevada 3500 monitor?
A: Yes, with appropriate signal conditioning. The 4–20 mA output from the CON021 is compatible with most 3500 series analog input cards. Verify input range settings.
Q: What is the difference between PR6423/00R and PR6423/01R?
A: The “01R” suffix denotes reverse polarity output. This affects the direction of the output signal relative to gap increase. Ensure your monitor/DCS is configured for the correct polarity.
Q: Is the CON021 conditioner included?
A: We offer the probe and conditioner as a system or individually. Please specify your requirement at checkout or via email.
Q: Do you offer calibration certificates?
A: Yes. Factory calibration certificates and third-party calibration reports are available upon request for an additional fee.
Q: What is the lead time for this model?
A: In-stock units ship within 1–3 business days. Out-of-stock units typically have a 2–4 week lead time. Contact us for real-time availability.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
