EMERSON PR6423/002-031 CON041 – Non-Contact Eddy Current Proximity Sensor | Epro Series
Engineering Background: The Epro PR6423 series represents EMERSON’s precision eddy current sensing platform, engineered for continuous shaft vibration, axial displacement, and proximity measurement in rotating machinery. Designed to operate within the Epro CON041 signal conditioning ecosystem, this sensor delivers sub-micron resolution in the harshest industrial environments — from gas turbines to centrifugal compressors.
Product Positioning: The PR6423/002-031 CON041 is a factory-matched sensor-conditioner pair targeting OEM turbomachinery OEMs, MRO facilities, and plant reliability engineers who require API 670-compliant vibration monitoring without compromise. It is a direct replacement for legacy Bently Nevada 3300 series installations where EMERSON Epro infrastructure is preferred.
Complete Technical Specifications
- Part Number: PR6423/002-031 CON041
- Manufacturer: EMERSON (Epro)
- Sensor Type: Eddy Current / Non-Contact Proximity Probe
- Measurement Target: Shaft radial vibration, axial position, differential expansion
- Probe Tip Diameter: 8 mm (standard Epro PR6423 series)
- Cable Length: 031 = 3.1 m (extension cable included in CON041 pairing)
- Sensitivity: 8 mV/µm (200 mV/mil) nominal
- Linear Range: 0.25 – 2.25 mm (10 – 90 mil)
- Frequency Response: DC to 10 kHz (–3 dB)
- Supply Voltage: –24 VDC (via CON041 conditioner)
- Output Signal: –2 VDC to –18 VDC (proportional to gap)
- Operating Temperature: –50°C to +120°C (probe); –40°C to +70°C (conditioner)
- Protection Rating: IP67 (probe body)
- Connector: Epro standard coaxial, compatible with CON041 input
- Weight: 320 g (probe + cable assembly)
- Compliance: API 670, CE, ATEX (consult datasheet for zone classification)
Proven Application Environments
- Steam and gas turbine shaft vibration monitoring (API 670 systems)
- Centrifugal compressor radial and thrust position measurement
- Pump and motor bearing proximity sensing in petrochemical plants
- Power generation turbine differential expansion monitoring
- Marine propulsion shaft alignment verification
- Retrofit and MRO replacement for Epro PR6423 legacy installations
Engineering Advantages
- Factory-Matched Pair: PR6423/002-031 probe is calibrated and matched to CON041 conditioner at the factory, ensuring linearity and sensitivity accuracy without field calibration.
- Non-Contact Measurement: Zero mechanical wear, no lubrication required, suitable for continuous 24/7 operation in critical machinery protection systems.
- Wide Temperature Tolerance: Probe rated to +120°C, enabling direct installation in high-temperature bearing housings without thermal isolation hardware.
- EMI Immunity: Coaxial cable design with Epro-specified shielding rejects electromagnetic interference from VFDs, transformers, and high-current bus bars.
- API 670 Compliance: Meets the full measurement chain requirements of API Standard 670 (5th Edition) for machinery protection systems.
System Architecture & Signal Flow
The PR6423/002-031 CON041 operates as a three-component measurement chain:
- PR6423/002-031 Probe: Generates a high-frequency oscillating electromagnetic field at the probe tip. Eddy currents induced in the conductive target shaft attenuate the field proportionally to the air gap distance.
- Extension Cable (031 = 3.1 m): Transmits the demodulated signal from probe to conditioner with controlled impedance, maintaining calibration integrity over the specified cable length.
- CON041 Signal Conditioner: Demodulates the oscillator output, applies temperature compensation, and delivers a calibrated –2 to –18 VDC output to the monitoring system (e.g., EMERSON Epro MMS6000, CSI 6500, or third-party API 670 monitors).
Note: The probe, extension cable, and conditioner must be used as a matched set. Substituting individual components will invalidate factory calibration.
Sourcing & Quality Verification
- Origin: Genuine EMERSON Epro production, sourced through authorized industrial distribution channels.
- Inspection: Each unit undergoes incoming inspection including visual examination, connector integrity check, and functional verification against Epro factory calibration data.
- Traceability: Serial number and date code recorded at dispatch. Certificate of conformance available upon request.
- Packaging: Ships in original or equivalent ESD-safe packaging with protective end caps on probe tip and connector.
- Warranty: 12-month warranty against manufacturing defects from date of shipment.
Procurement Process
- Submit your inquiry via support@konmask.com or WhatsApp +0086 19859288691 with your required quantity and delivery timeline.
- Receive a formal quotation with lead time, unit price, and shipping options (DHL Express / FedEx / sea freight) within 24 business hours.
- Confirm purchase order — T/T bank transfer, PayPal, or trade assurance accepted.
- Dispatch within 3–7 business days for in-stock units; tracking number provided at shipment.
- Post-delivery technical support available for installation and commissioning queries.
Technical FAQ
Q: Can the PR6423/002-031 be used with a Bently Nevada 3300 XL monitor?
A: Not directly. The Epro PR6423 series uses a different oscillator frequency and sensitivity curve than Bently Nevada 3300 probes. Cross-system use requires a signal converter or monitor reconfiguration. Contact us for compatibility assessment.
Q: What target material is required for accurate measurement?
A: The probe is calibrated for AISI 4140 steel (standard shaft material). Stainless steel, titanium, and other alloys will shift the sensitivity curve — consult the Epro calibration correction factors in the PR6423 datasheet.
Q: Is the CON041 conditioner included in this listing?
A: Yes. This listing covers the complete PR6423/002-031 CON041 matched set (probe + extension cable + conditioner). Individual components are available separately — please inquire.
Q: What is the minimum order quantity?
A: MOQ is 1 unit. Volume pricing is available for orders of 5 units or more.
Q: Can you provide an ATEX certificate for hazardous area installation?
A: ATEX documentation is available for applicable variants. Please specify your zone classification and temperature class when inquiring.
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