EPRO PR6423/10R-030 CON021 – Eddy Current Proximity Sensor Module | PR6423 Series
Engineering Background
The EPRO PR6423 series represents the industry benchmark for non-contact eddy current proximity measurement in rotating machinery protection systems. Developed to meet the stringent demands of turbomachinery OEMs and power generation operators, the PR6423/10R-030 CON021 is a field-proven sensor module deployed globally in gas turbines, steam turbines, compressors, and large rotating equipment where continuous shaft displacement monitoring is mission-critical.
Product Positioning
This module is the primary sensing element in EPRO’s two-wire eddy current measurement chain, designed to interface directly with EPRO CON021 extension cables and compatible signal conditioning electronics (e.g., PR9268 series drivers). It delivers high-resolution, temperature-stable displacement output for radial vibration, axial position, and differential expansion measurements — all in compliance with API 670 machinery protection standards.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PR6423/10R-030 CON021 |
| Manufacturer | EPRO (Emerson / Metrix) |
| Sensor Type | Eddy Current Proximity Sensor |
| Measurement Range | 0 – 2 mm (nominal linear range) |
| Sensitivity | 8 mV/µm (nominal) |
| Cable Length | 1.0 m integral cable (CON021 extension compatible) |
| Thread / Housing | M10 × 1 stainless steel body |
| Operating Temperature | −40 °C to +120 °C |
| Frequency Response | DC to 10 kHz (−3 dB) |
| Supply Voltage | −24 VDC (via driver/conditioner) |
| Output Signal | Voltage proportional to gap distance |
| Target Material | Steel / Inconel (per calibration) |
| Ingress Protection | IP67 |
| Compliance | API 670, CE |
| Weight | ~500 g (with cable) |
| Connector | CON021 series (EPRO standard) |
Proven Application Environments
- Gas & Steam Turbines — Radial shaft vibration and axial thrust position monitoring per API 670
- Centrifugal Compressors — Continuous rotor displacement measurement in high-speed rotating equipment
- Pumps & Fans — Bearing housing proximity sensing for predictive maintenance programs
- Power Generation — Integration with EPRO MMS 6000 / 6350 and Bently Nevada 3500 series racks
- Petrochemical & Refinery — Hazardous area installations requiring robust IP67 sealing
- Marine Propulsion — Shaft monitoring in confined, high-vibration environments
Engineering Advantages
- Non-Contact Measurement — Zero mechanical wear; ideal for continuous 24/7 operation
- High Linearity — ±1% linearity over calibrated range ensures accurate trip/alarm setpoints
- Temperature Stability — Thermally compensated design maintains calibration from −40 °C to +120 °C
- Wide Frequency Bandwidth — DC to 10 kHz captures both slow shaft movement and high-frequency vibration events
- API 670 Compliant — Drop-in replacement for existing EPRO PR6423 installations without recalibration
- Robust Construction — M10 stainless steel body with IP67 rating withstands oil mist, coolant, and washdown
System Architecture & Signal Flow
The PR6423/10R-030 CON021 operates as part of a three-component measurement chain:
- Sensor (PR6423/10R-030) — Generates high-frequency oscillating electromagnetic field; gap change modulates output voltage
- Extension Cable (CON021) — Matched impedance cable (integral 1 m + CON021 extension to driver); total system cable length must match driver calibration
- Signal Conditioner / Driver (e.g., PR9268) — Demodulates sensor signal, provides −24 VDC excitation, outputs 0–24 VDC or 4–20 mA to monitoring rack
Note: Total cable length (sensor + extension) must be specified at time of order to ensure factory calibration match. Standard configurations: 1 m + 5 m, 1 m + 9 m.
Sourcing & Quality Verification
- All units sourced from authorized EPRO distributors or verified OEM surplus channels
- Each module inspected for physical integrity, connector condition, and cable continuity prior to dispatch
- Calibration certificates and original EPRO documentation available upon request
- Traceability records maintained for all stock — batch number, origin, and inspection date on file
- Konmask.com is a specialist supplier of industrial automation and control system components; we do not sell counterfeit or grey-market parts
Procurement Process
- Confirm Part Number — Verify PR6423/10R-030 CON021 matches your existing installation or driver calibration
- Specify Cable Configuration — Confirm total cable length requirement (sensor + extension) before ordering
- Request Quote — Contact support@konmask.com or call +0086 19859288691 for volume pricing and lead time
- Order & Dispatch — Standard orders dispatched within 1–3 business days; expedited shipping available
- Documentation — Packing list, inspection report, and optional calibration certificate included
Technical FAQ
Q: Is this sensor compatible with Bently Nevada 3500 series racks?
A: The PR6423 series uses EPRO’s proprietary signal chain. Direct connection to Bently Nevada racks requires a compatible signal conditioner or interface module. Contact us for integration guidance.
Q: Can I use a longer CON021 extension cable than the factory calibration?
A: No. The sensor, extension cable, and driver are calibrated as a matched system. Changing cable length without recalibration will introduce measurement error. Always specify total cable length at time of order.
Q: What target materials are supported?
A: The standard calibration is for AISI 4140 steel. Inconel and other alloy targets require a material-specific calibration — please specify at time of order.
Q: Do you provide a warranty?
A: Yes. All units carry a 12-month warranty against manufacturing defects. Warranty claims are processed via support@konmask.com.
Q: Is expedited shipping available?
A: Yes. DHL Express, FedEx International Priority, and UPS Worldwide Expedited are available. Contact us for a shipping quote.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
