Emerson PR6423/01K-010 – Non-Contact Eddy Current Proximity Sensor | Bently Nevada 3300 Series Compatible
Engineering Background: The PR6423/01K-010 is a high-precision eddy current proximity transducer engineered by Emerson (Bently Nevada) for continuous, non-contact measurement of shaft vibration, axial displacement, and radial position in rotating machinery. It operates on the principle of electromagnetic induction, generating a high-frequency oscillating magnetic field that interacts with conductive target surfaces to produce a linear DC output proportional to gap distance.
Product Positioning: Designed for mission-critical rotating equipment in power generation, oil & gas, petrochemical, and heavy industrial environments, the PR6423/01K-010 delivers API 670-compliant performance with exceptional long-term stability. It is the preferred choice for procurement engineers specifying vibration monitoring systems on steam turbines, gas compressors, centrifugal pumps, and large electric motors.
Complete Technical Specifications
- Part Number / SKU: PR6423/01K-010
- Manufacturer: Emerson (Bently Nevada)
- Series / Platform: PR6423 Series – Bently Nevada 3300 XL Compatible
- Sensor Type: Eddy Current / Inductive Proximity Transducer
- Measurement: Non-contact shaft vibration, displacement, axial position
- Probe Tip Diameter: 8 mm (standard)
- Linear Range: 0 – 2 mm (nominal)
- Sensitivity: 8 mV/µm (200 mV/mil) nominal
- Frequency Response: DC to 10,000 Hz (–3 dB)
- Supply Voltage: –24 VDC (from compatible driver/oscillator)
- Output Signal: –2 VDC to –18 VDC (linear range)
- Cable Length: 1.0 m integral armored cable
- Connector: Standard Bently Nevada compatible connector
- Target Material: AISI 4140 steel or equivalent ferromagnetic alloy
- Operating Temperature: –35°C to +120°C
- Ingress Protection: IP67
- Housing Material: Stainless steel body
- Weight: Approx. 420 g (with cable)
- Compliance: API 670, CE, RoHS
Proven Application Environments
- Steam turbine shaft vibration and axial thrust monitoring
- Gas turbine and compressor radial bearing displacement
- Centrifugal pump and fan rotor position measurement
- Large electric motor shaft orbit analysis
- Gearbox and expander differential expansion monitoring
- Petrochemical plant rotating equipment protection systems
- Power generation turbine supervisory instrumentation (TSI)
Engineering Advantages
- Non-contact measurement: Zero mechanical wear, unlimited service life on the sensor itself
- High bandwidth: DC to 10 kHz response captures both static position and high-frequency vibration events
- API 670 compliant: Meets the most stringent international standard for machinery protection systems
- Bently Nevada ecosystem compatible: Direct drop-in replacement for 3300 XL monitoring systems without recalibration
- Robust construction: IP67-rated stainless steel housing withstands harsh process environments including oil mist, steam, and chemical exposure
- Stable long-term output: Thermally compensated design maintains calibration accuracy across the full operating temperature range
System Architecture & Signal Flow
The PR6423/01K-010 operates as part of a three-component measurement chain: Probe → Extension Cable → Driver/Oscillator (e.g., PR9268 or 3300 XL driver). The probe tip generates a high-frequency (typically 1 MHz) oscillating magnetic field. When a conductive target enters the field, eddy currents are induced, loading the oscillator circuit. This loading is detected and converted to a linear DC voltage output by the driver module, which is then fed to the monitoring system (e.g., Bently Nevada 3300 rack or equivalent PLC/DCS analog input card).
Note: This listing covers the probe sensor only. Extension cables and driver modules are available separately — contact us for complete system quotations.
Sourcing & Quality Verification
- All units sourced from authorized distributors or verified surplus channels with full traceability
- Each unit inspected for physical integrity, connector condition, and cable continuity prior to shipment
- Original manufacturer labeling and part number markings verified
- Certificate of conformance (CoC) available upon request
- Functional test reports available for select stock — inquire at time of order
Procurement Process
- Confirm compatibility: Verify your existing driver/oscillator model and cable length requirements before ordering
- Request a quote: For volume orders (>5 units) or complete system packages, contact [email protected] for preferential pricing
- Place order: Secure checkout via Shopify — credit card, wire transfer, and PayPal accepted
- Shipping: DHL / FedEx express international shipping from China; typical transit 3–7 business days
- Documentation: Commercial invoice, packing list, and CoC included; ECCN/export classification available on request
Technical FAQ
Q: Is the PR6423/01K-010 a direct replacement for the Bently Nevada 330101 series?
A: The PR6423 series uses the same signal chain architecture and is compatible with 3300 XL drivers, but connector and calibration parameters should be verified against your specific driver model before installation.
Q: What driver module is required?
A: The PR6423/01K-010 requires a compatible Bently Nevada PR9268 series driver or equivalent 3300 XL proximitor. Contact us if you need a matched driver unit.
Q: Can this sensor be used with non-Bently Nevada monitoring systems?
A: Yes. The –2 VDC to –18 VDC output is compatible with any analog input card accepting this range. Custom calibration documentation can be provided.
Q: What is the warranty?
A: 12-month warranty against manufacturing defects. Warranty claims processed within 5 business days of receipt of returned unit.
Q: Do you offer expedited shipping?
A: Yes. DHL Express Next-Day and 2-Day options are available at checkout for most destinations.
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