Rotating Machinery Condition Monitoring Solution – EPRO PR9268/203-000 | PR9268 Series
Where This Product Is Used
The EPRO PR9268/203-000 is a precision eddy-current shaft vibration sensor engineered for continuous condition monitoring of rotating machinery in demanding industrial environments. It is widely deployed in:
- Steam & Gas Turbines – real-time radial shaft displacement monitoring per API 670
- Centrifugal Compressors – early detection of rotor imbalance and bearing wear in petrochemical plants
- Large Electric Motors & Generators – shaft orbit analysis and critical speed monitoring
- Pumps & Fans – vibration trending for predictive maintenance programs
- Paper & Steel Mill Machinery – continuous monitoring of high-speed roll drives
- Marine Propulsion Systems – shaft line vibration surveillance in offshore and vessel applications
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PR9268/203-000 |
| Series | PR9268 |
| Manufacturer | EPRO (Baker Hughes / Bently Nevada compatible) |
| Sensor Type | Eddy-Current (Non-contact) Proximity Probe |
| Measurement | Radial shaft vibration & displacement |
| Output Signal | 4–20 mA / voltage (driver-dependent) |
| Cable Length | 2.0 m (standard; extension cables available) |
| Tip Diameter | 8 mm |
| Linear Range | 0–2 mm (nominal) |
| Sensitivity | 8 V/mm (with matched driver) |
| Operating Temperature | -35 °C to +120 °C |
| Protection Rating | IP67 |
| Weight | 740 g (with cable) |
| Connector | Coaxial, matched to PR9268 driver series |
| Compliance | API 670, CE, RoHS |
Why Engineers Specify This Model
- API 670 Compliant – meets the industry standard for machinery protection systems, accepted by EPC contractors and end-users globally
- Non-contact measurement – zero mechanical wear, no lubrication required, suitable for continuous 24/7 operation
- High EMI immunity – shielded coaxial cable construction rejects electrical noise in VFD-heavy environments
- Direct replacement compatibility – pin-compatible with Bently Nevada 3300 XL 8mm probe systems, simplifying retrofit projects
- Matched system accuracy – factory-calibrated as a probe + extension cable + driver system for ±1% linearity
- Robust IP67 housing – withstands oil mist, coolant splash, and high-humidity bearing housings
Complete System Bill of Materials
The PR9268/203-000 probe is part of a matched measurement chain. A complete installation typically requires:
- Proximity Probe: PR9268/203-000 (this item) – 8 mm tip, 2 m integral cable
- Extension Cable: PR9268/E×× – available in 3 m, 5 m, 9 m lengths to reach junction box
- Signal Driver / Oscillator: PR9268/D×× – converts probe impedance to 4–20 mA or ±24 V output
- Mounting Bracket: Stainless steel radial probe holder (customer-specified per shaft diameter)
- Monitoring System: Compatible with EPRO MMS6000, Bently Nevada 3500, or any API 670 rack
Contact [email protected] to source the complete matched system.
Compliance & Industry Standards
- API 670 – Machinery Protection Systems (5th Edition)
- IEC 60068 – Environmental testing (temperature, humidity, vibration)
- CE Marking – EMC Directive 2014/30/EU
- RoHS 2 – Restriction of Hazardous Substances Directive 2011/65/EU
- ATEX / IECEx – Consult Konmask for zone-rated variants if required for hazardous area classification
Quality Assurance & Sourcing
Konmask.com sources EPRO PR9268 series sensors exclusively through authorized distribution channels and verified OEM supply chains. Every unit shipped includes:
- Original manufacturer packaging with tamper-evident seals
- Factory calibration certificate traceable to national standards
- Batch traceability documentation available on request
- Pre-shipment functional verification against EPRO factory test specifications
- 12-month warranty against manufacturing defects
How to Source This Part
- In-stock orders: Add to cart and check out — ships within 1–3 business days from our warehouse
- Bulk / project orders: Email [email protected] with quantity, delivery schedule, and project name for a formal quotation
- Matched system sourcing: Provide your existing probe part number and cable length — we will configure the complete PR9268 measurement chain
- Urgent requirements: Call +0086 198 5928 8691 for same-day quotation on critical plant shutdowns
- Export / cross-border: We ship internationally with full commercial invoice, packing list, and HS code documentation
Application-Specific FAQ
Q: Is the PR9268/203-000 a direct replacement for the Bently Nevada 330780-50-00?
A: Yes. The PR9268 8 mm series is dimensionally and electrically compatible with the Bently Nevada 3300 XL 8 mm probe family when used with the matched EPRO driver. Always verify the full system (probe + cable + driver) calibration before commissioning.
Q: What target material is required for accurate measurement?
A: The probe is calibrated for AISI 4140 steel (standard shaft material). For stainless steel or non-ferrous shafts, a material correction factor must be applied — contact us for recalibration options.
Q: Can this sensor be used in ATEX Zone 1 hazardous areas?
A: The standard PR9268/203-000 is not ATEX-rated. EPRO offers intrinsically safe variants for Zone 1/Zone 2 applications. Contact Konmask to confirm the correct part number for your area classification.
Q: What is the recommended gap voltage for installation?
A: With the matched PR9268 driver, set the initial gap to achieve approximately -10 V DC (mid-range), corresponding to a physical gap of ~1.0 mm from the shaft surface.
Q: Do you provide calibration certificates?
A: Yes. Factory calibration certificates are included with every unit. Third-party recalibration services can be arranged on request.
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Contact: [email protected] | +0086 19859288691
