Turbine & Rotating Machinery Monitoring Solution — EMERSON PR6426/010-140 | CON021/916-160
Where This Product Is Used
The EMERSON PR6426/010-140 Eddy Current Sensor, paired with the CON021/916-160 signal conditioning module, is deployed in mission-critical rotating machinery protection systems across heavy industry. Typical installation environments include:
- Steam & Gas Turbines — shaft radial vibration and eccentricity monitoring per API 670
- Centrifugal & Axial Compressors — real-time displacement measurement to detect rotor instability
- Pumps & Fans — continuous proximity sensing for predictive maintenance programs
- Gearboxes — gear mesh frequency analysis and bearing journal orbit tracking
- Hydro & Wind Turbines — non-contact shaft position feedback in harsh, high-humidity environments
- Marine Propulsion Systems — shaft alignment verification and thrust bearing wear detection
Engineers specify this sensor-conditioner pair wherever non-contact, high-bandwidth displacement measurement is required without physical wear or lubrication.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EMERSON (Bently Nevada) |
| Sensor Model | PR6426/010-140 |
| Signal Conditioner | CON021/916-160 |
| Sensor Type | Eddy Current (Non-contact Proximity) |
| Measurement Range | 0 – 2 mm (nominal linear range) |
| Sensitivity | 8 mV/µm (typical) |
| Frequency Response | DC to 10 kHz |
| Operating Temperature | -40°C to +120°C (sensor tip) |
| Cable Length | Per model suffix (140 = 1.4 m extension) |
| Output Signal | -24 VDC bias (standard Bently Nevada compatible) |
| Target Material | Steel / Stainless Steel (ferromagnetic) |
| Housing Material | Stainless Steel, IP67 rated |
| Connector | Standard Bently Nevada coaxial |
| Weight | ~200 g (sensor + conditioner assembly) |
Specifications are based on OEM documentation. Contact Konmask for application-specific confirmation.
Why Engineers Specify This Model
- Drop-in Bently Nevada Compatibility — Direct replacement for existing 3300 XL and 7200 series proximity systems; no recalibration of the monitoring rack required.
- High Signal Linearity — ±1% linearity across the full measurement range ensures accurate orbit plots and alarm setpoints.
- Robust IP67 Construction — Stainless steel housing withstands oil mist, steam, and aggressive cleaning agents common in turbine halls.
- Wide Temperature Tolerance — Operates reliably from cryogenic compressor environments to high-temperature steam turbine casings.
- Integrated Extension Cable — The /010-140 suffix denotes a factory-matched 1.4 m extension, eliminating field-trimming and impedance mismatch errors.
- Proven MTBF — Bently Nevada eddy current systems are the global benchmark for continuous machinery protection, with documented MTBF exceeding 100,000 hours in field service.
Complete System Bill of Materials
A fully functional proximity measurement loop for one measurement plane typically requires:
- ✅ PR6426/010-140 — Eddy current probe (this item)
- ✅ CON021/916-160 — Signal conditioner / driver (this item, included as a set)
- ⬜ Bently Nevada 3300 XL / 7200 Series Monitor Card — rack-mounted vibration monitor
- ⬜ Proximitor mounting bracket & probe holder — application-specific machined fixture
- ⬜ RG-58 coaxial interconnect cable — field wiring from conditioner to monitor rack
- ⬜ Terminal block / junction box — IP65+ rated for turbine pedestal installation
Konmask can source companion components. Contact us with your full BOM for a consolidated quotation.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition): sensor and conditioner meet proximity probe system requirements for radial vibration, axial position, and speed measurement.
- ISO 10816 / ISO 20816 — Mechanical vibration evaluation of machines; sensor output is compatible with compliant monitoring systems.
- IEC 60068 — Environmental testing (temperature, humidity, vibration) — sensor housing qualified.
- CE Marking — Compliant with applicable EU directives for industrial instrumentation.
- RoHS — Materials comply with Restriction of Hazardous Substances Directive 2011/65/EU.
Quality Assurance & Sourcing
Konmask sources EMERSON / Bently Nevada components through verified industrial supply channels. Every unit dispatched from our warehouse undergoes the following checks:
- Visual Inspection — Connector pins, cable jacket, and probe tip examined for transit damage.
- Label & Serialization Verification — Part number, revision, and serial number cross-referenced against OEM documentation.
- Packaging Integrity — Anti-static and foam-lined packaging confirmed before dispatch.
- Documentation Package — OEM datasheet and calibration certificate (where available) included with shipment.
We do not sell counterfeit, refurbished-as-new, or unverified grey-market parts. If a unit does not pass our inspection, it is not listed for sale.
How to Source This Part
- Add to Cart — Click “Buy Now” for immediate checkout if stock is confirmed available.
- Request a Quote — For volume orders (>3 units), OEM lead-time alternatives, or consolidated BOM sourcing, email support@konmask.com.
- Urgent Requirement — Call or WhatsApp +0086 19859288691 for same-day response on critical plant shutdowns.
- Export & Cross-border Orders — We ship globally. Provide your destination country for freight, duties, and HS code confirmation before ordering.
Lead time: In-stock units ship within 1–3 business days. Out-of-stock units: 2–6 weeks depending on OEM availability.
Application-Specific FAQ
Q: Is this sensor compatible with a Bently Nevada 3300 XL monitor?
A: Yes. The PR6426 series with CON021 conditioner is designed to interface directly with Bently Nevada 3300 XL proximity monitor cards. The -24 VDC bias output and sensitivity (8 mV/µm) match the standard input requirements.
Q: Can this probe measure axial position (thrust) as well as radial vibration?
A: Yes, with appropriate mounting. Eddy current probes measure gap distance regardless of orientation. Axial thrust measurement requires a thrust collar target and correct monitor card configuration.
Q: What target material is required?
A: The PR6426 is optimized for ferromagnetic steel targets (e.g., 4140, 4340 alloy steel). Non-ferromagnetic materials (titanium, aluminum, Inconel) require a separate calibration curve — contact us before ordering for non-standard shaft materials.
Q: Is the extension cable factory-matched to the probe?
A: Yes. The /010-140 suffix denotes a factory-matched, trimmed extension cable. Field-cutting or substituting a non-matched cable will alter the system sensitivity and void calibration.
Q: Do you provide a calibration certificate?
A: OEM calibration documentation is included where available. For applications requiring traceable calibration (e.g., nuclear, offshore), contact us to discuss third-party recertification options.
Q: Can I order just the conditioner (CON021/916-160) separately?
A: Yes. Contact us with your exact part number requirement. We stock both probes and conditioners individually as well as matched sets.
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Contact: support@konmask.com | +0086 19859288691
