EPRO PR6424/000-000 CON21 Eddy Current Proximity Sensor | Replacement, Equivalent & Selection Guide
The EPRO PR6424/000-000 CON21 is a high-precision eddy current proximity sensor designed for non-contact vibration, position, and displacement measurement in rotating machinery and critical industrial applications. As an authorized sourcing partner, Konmask.com supplies genuine and compatible units with full traceability.
Technical Specifications
- Part Number: PR6424/000-000 CON21
- Manufacturer: EPRO (Baker Hughes / Bently Nevada compatible series)
- Sensor Type: Eddy Current Proximity Sensor
- Measurement: Non-contact vibration, radial displacement, axial position
- Tip Diameter: 8 mm (standard PR6424 series)
- Sensing Range: 0–2 mm (linear range)
- Output Signal: Voltage output, compatible with CON021 / CON021-xxx driver
- Operating Temperature: –40°C to +120°C (sensor tip)
- Cable Length: Per order configuration (extension cable required)
- Target Material: Steel / ferromagnetic metals
- Connector: CON21 integral connector
- Weight: Approx. 450 g (with cable)
- Compliance: CE, RoHS compatible
Compatible Replacement & Equivalent Models
The following models are functionally equivalent or drop-in replacements for the PR6424/000-000 CON21 in most system configurations. Always verify driver/conditioner compatibility before substitution.
- EPRO PR6424/010-000 CON21 – 1 m integral cable variant
- EPRO PR6424/020-000 CON21 – 2 m integral cable variant
- Bently Nevada 330104-00-06-10-02-00 – 3300 XL 8 mm proximity sensor (cross-compatible with CON021 driver)
- Bently Nevada 330105-02-12-10-02-00 – 3300 XL 11 mm series (verify gap range)
- EPRO PR6423/000-000 – 5 mm tip diameter variant (reduced range)
- EPRO PR6426/000-000 – High-temperature variant for >120°C environments
- Emerson CSI 330180-91-00 – OEM equivalent for select turbine monitoring systems
Note: Replacement selection must account for gap voltage, sensitivity (mV/mil or mV/mm), and driver module compatibility. Contact our engineers for a verified cross-reference.
Why Choose the Original PR6424/000-000 CON21
- Factory-calibrated sensitivity: 7.87 V/mm (200 mV/mil) — no field recalibration required
- Integral CON21 connector eliminates field-wiring errors common with extension-cable assemblies
- Proven reliability in API 670-compliant machinery protection systems
- Full traceability: serial number, calibration certificate, and factory test data available
- Direct plug-in compatibility with EPRO MMS 6000, MMS 6350, and CON021 driver modules
Typical Applications
- Steam and gas turbine shaft vibration monitoring
- Centrifugal compressor radial and axial displacement measurement
- Pump and motor bearing clearance monitoring
- Gearbox and expander rotor position sensing
- API 670 machinery protection systems
- OEM integration in DCS / SCADA vibration monitoring loops
System Compatibility
- Driver / Conditioner: EPRO CON021, CON021-xxx series; Bently Nevada 3300 series drivers
- Monitoring Systems: EPRO MMS 6000 / MMS 6350 / MMS 6823; Bently Nevada 3500 rack
- DCS Integration: 4–20 mA output via conditioner; compatible with ABB, Siemens, Honeywell DCS
- Extension Cable: PR9268/xxx series (EPRO); 330130-xxx (Bently Nevada)
- Target Material: AISI 4140 steel recommended; verify for stainless or non-ferrous targets
Selection Guide
Use the table below to select the correct PR6424 variant for your application:
- Tip diameter 8 mm, integral connector, standard temp (≤120°C): PR6424/000-000 CON21 ✓
- Need longer integral cable (1 m / 2 m): PR6424/010-000 or PR6424/020-000 CON21
- High-temperature environment (>120°C): PR6426/000-000 series
- Smaller tip diameter (5 mm) for tight spaces: PR6423/000-000
- Bently Nevada 3500 system, no EPRO driver: Bently Nevada 330104 series
- Unsure? Send us your driver model number and gap voltage — we’ll confirm compatibility within 24 hours.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or OEM-certified supply chains
- Pre-shipment inspection: visual, dimensional, and electrical verification
- Calibration certificate available upon request
- Shelf life managed — no long-stored or refurbished units supplied without disclosure
- Export compliance: ECCN classification reviewed for international orders
How to Order
- Part Number: PR6424/000-000 CON21
- Lead Time: In-stock units ship within 3–5 business days; special configurations 2–4 weeks
- MOQ: 1 piece
- Payment: T/T, PayPal, credit card accepted
- Shipping: DHL / FedEx worldwide; customs documentation provided
- RFQ: Email support@konmask.com with quantity and delivery requirements
Replacement & Compatibility FAQ
Q: Can I use the PR6424/000-000 CON21 with a Bently Nevada 3500 system?
A: Yes, with a compatible CON021 driver and correct gap voltage setting. Verify sensitivity (7.87 V/mm) matches your monitor’s input range.
Q: What is the difference between PR6424/000-000 and PR6424/010-000?
A: The /010-000 includes a 1 m integral cable; /000-000 has no integral cable and requires a PR9268 extension cable assembly.
Q: Is the CON21 connector the same as the standard EPRO connector?
A: CON21 refers to the integral connector style. Confirm your driver’s mating connector before ordering.
Q: Can this sensor measure non-ferrous targets?
A: Eddy current sensors work on all conductive metals, but sensitivity and linearity vary. AISI 4140 steel is the calibration standard; non-ferrous targets require recalibration.
Q: Do you provide a calibration certificate?
A: Yes, available upon request at no additional charge for in-stock units.
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