EPRO PR9350/02 Cylinder Expansion Sensor | Replacement, Equivalent & Selection Guide
The EPRO PR9350/02 is a precision cylinder expansion (axial displacement) sensor designed for continuous monitoring of turbine shaft axial position in critical rotating machinery. It is widely deployed in power generation, petrochemical, and heavy industrial environments where reliable protection of high-value assets is essential.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EPRO (Baker Hughes / Bently Nevada ecosystem) |
| Part Number | PR9350/02 |
| Sensor Type | Eddy-current / inductive cylinder expansion (axial displacement) |
| Measurement Range | Typically 0–25 mm (application-dependent) |
| Output Signal | 4–20 mA / voltage (monitor-dependent) |
| Supply Voltage | 24 VDC (via monitor/barrier) |
| Operating Temperature | −40 °C to +120 °C |
| Protection Class | IP67 |
| Weight | ~400 g |
| Connector | Integral cable / M12 (model-dependent) |
| Compliance | CE, ATEX (zone-dependent configuration) |
Note: Always verify specifications against the official EPRO datasheet for your specific revision before installation.
Compatible Replacement & Equivalent Models
The table below lists functionally equivalent or drop-in replacement sensors commonly evaluated alongside the PR9350/02. Compatibility depends on monitor type, cable length, and target material — confirm with your system integrator before substitution.
| Model | Manufacturer | Compatibility Notes |
|---|---|---|
| PR9350/01 | EPRO | Shorter range variant; same connector family |
| PR9350/03 | EPRO | Extended range variant; verify monitor input range |
| 330500-02-00 | Bently Nevada | Functionally similar eddy-current proximity sensor; check gap and sensitivity |
| 330104-00-20-10-02-00 | Bently Nevada | 3300 XL series; widely used cross-reference |
| CS-1 / CS-2 | Metrix / Wilcoxon | Alternative brand; requires sensitivity and output verification |
| TM0182 | Emerson | Confirm monitor compatibility before substitution |
Disclaimer: Cross-references are provided for selection guidance only. Konmask.com recommends engineering validation before any field substitution on safety-critical systems.
Why Choose the Original Model
- OEM-grade accuracy: Factory-calibrated sensitivity and linearity matched to EPRO monitor cards (e.g., MMS 6220, MMS 6312).
- Proven reliability: Designed for continuous 24/7 operation in harsh industrial environments.
- System traceability: Maintains full audit trail for ISO 55000 asset management and insurance compliance.
- Warranty & support: Eligible for OEM warranty and Baker Hughes / EPRO technical support.
- Reduced commissioning risk: No re-calibration of monitor thresholds required when replacing like-for-like.
Typical Applications
- Steam turbine axial displacement monitoring (power plants, cogeneration)
- Gas turbine expansion measurement (oil & gas, LNG facilities)
- Compressor shaft position monitoring (petrochemical, refinery)
- Pump and motor axial thrust protection
- Rotating machinery condition monitoring systems (CMS)
- Turbine protection systems (TPS) integrated with DCS / PLC safety layers
System Compatibility
The PR9350/02 is designed to interface with EPRO and compatible vibration/protection monitor systems. Verified compatible platforms include:
- EPRO MMS 6220 – Axial displacement monitor (direct interface)
- EPRO MMS 6312 – Combined axial/radial monitor
- Bently Nevada 3500/45 – Position monitor (verify sensitivity setting)
- Bently Nevada 3300 Series – Legacy systems (adapter may be required)
- Emerson Ovation DCS – Via 4–20 mA I/O module
- Siemens SPPA-T3000 – Via analog input card
- ABB System 800xA – Via AI810 or equivalent analog module
Always confirm signal conditioning, barrier, and cable specifications with your system documentation.
Selection Guide
Use the following criteria to confirm the PR9350/02 is the correct sensor for your application, or to identify the best alternative:
| Selection Criterion | Guidance |
|---|---|
| Measurement range required | Confirm 0–25 mm covers your expected axial displacement; select PR9350/01 for shorter range |
| Target material | Eddy-current sensors require ferromagnetic or conductive targets; verify shaft material |
| Monitor card in use | Match sensor sensitivity (V/mm or mA/mm) to monitor input specification |
| Cable length | Standard extension cable lengths: 5 m, 9 m, 15 m — specify at order |
| Hazardous area classification | Confirm ATEX/IECEx zone rating if installed in Ex zone 1 or 2 |
| Replacement vs. upgrade | Like-for-like replacement: PR9350/02; performance upgrade: consult EPRO MMS 6220 datasheet |
| Budget-sensitive projects | Certified equivalent models available — contact Konmask for validated alternatives |
Quality Assurance & Sourcing
- Genuine OEM units: Sourced through authorized distribution channels with full traceability documentation.
- Inspection & testing: Each unit undergoes incoming inspection; test reports available on request.
- Anti-counterfeit policy: Konmask.com does not trade in counterfeit or grey-market components.
- Shelf life & storage: Stored in climate-controlled warehouse per manufacturer recommendations.
- Documentation package: Certificate of conformance, packing list, and datasheet included with every shipment.
How to Order
- Confirm part number: EPRO PR9350/02
- Specify required cable length and connector type if non-standard.
- Indicate quantity and required delivery timeline.
- Submit your RFQ via the product page, or contact us directly:
- 📧 Email: support@konmask.com
- 📞 Phone/WhatsApp: +0086 19859288691
- 🌐 Website: https://Konmask.com
Bulk orders and long-term supply agreements welcome. Lead time and pricing provided within 24 hours on business days.
Replacement & Compatibility FAQ
Q: Can I replace PR9350/02 with a Bently Nevada 330500 series sensor?
A: Functionally similar, but sensitivity (V/mm) and gap settings must be re-verified. Do not substitute without engineering sign-off on safety-critical systems.
Q: Is the PR9350/02 compatible with Bently Nevada 3500 monitors?
A: Partial compatibility exists — confirm the monitor’s input sensitivity range matches the EPRO sensor output before installation.
Q: What is the difference between PR9350/01, /02, and /03?
A: The suffix typically denotes measurement range or cable configuration variants. /02 is the standard mid-range version. Contact Konmask for a detailed variant comparison sheet.
Q: Do you supply calibration certificates?
A: Yes. Factory calibration certificates are available for OEM units. Third-party calibration can be arranged on request.
Q: Can I order a small quantity for testing?
A: Yes, single-unit orders are accepted. Contact us for pricing and availability.
Q: What is the lead time for PR9350/02?
A: In-stock units ship within 3–5 business days. Out-of-stock lead time is typically 4–8 weeks depending on OEM availability.
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Contact: support@konmask.com | +0086 19859288691
