Valve & Turbine Position Monitoring Solution — EPRO PR9350/02-S2 | PR9350 Series
Where This Product Is Used
The EPRO PR9350/02-S2 is a Linear Variable Differential Transformer (LVDT) sensor engineered for precision position measurement in demanding industrial environments. It is widely deployed in:
- Steam & Gas Turbine Control Systems — Monitoring governor valve stem position, control valve travel, and throttle valve feedback in power generation plants.
- Compressor & Pump Stations — Tracking actuator rod displacement and valve position in reciprocating and centrifugal compressor packages.
- Hydraulic Servo Systems — Providing closed-loop position feedback for hydraulic actuators in turbine bypass and extraction valve control.
- Rotating Machinery Protection — Integrated into Bently Nevada 3500 / 3300 series racks and EPRO MMS6000 systems for real-time shaft and casing displacement monitoring.
- Industrial Process Control — Used in chemical plants, refineries, and LNG facilities where precise linear displacement measurement is safety-critical.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PR9350/02-S2 |
| Manufacturer | EPRO (GmbH) |
| Series | PR9350 |
| Sensor Type | LVDT — Linear Variable Differential Transformer |
| Measurement Range | ±2 mm (full stroke) |
| Excitation Frequency | Typically 2–10 kHz (system dependent) |
| Output Signal | Differential AC voltage (ratiometric) |
| Operating Temperature | -40°C to +120°C |
| Protection Class | IP67 (dust-tight & water-immersion resistant) |
| Connector Type | Integral cable / MIL-spec connector |
| Weight | 613 g |
| Compatible Systems | EPRO MMS6000, Bently Nevada 3500/3300, custom LVDT signal conditioners |
| Country of Origin | Germany / Austria (EPRO GmbH) |
Why Engineers Specify This Model
- High Linearity & Repeatability — LVDT technology delivers frictionless, contactless measurement with virtually infinite resolution, critical for turbine valve feedback loops.
- Robust Construction — Stainless steel housing rated for high-vibration, high-temperature environments typical of power plant turbine decks.
- Direct System Compatibility — The PR9350/02-S2 is a factory-specified replacement for EPRO MMS6000 and legacy Bently Nevada position monitoring channels, minimizing re-engineering effort.
- Fail-Safe Design — Differential transformer architecture ensures signal integrity even under electromagnetic interference (EMI) common in switchgear rooms.
- Long Service Life — No moving electrical contacts; MTBF exceeds 100,000 hours in standard industrial service.
Complete System Bill of Materials
For a complete LVDT position monitoring loop using the PR9350/02-S2, engineers typically specify:
- EPRO PR9350/02-S2 — LVDT sensor (this item)
- EPRO MMS6220 — LVDT signal conditioner / monitor module
- EPRO CON021 — Extension cable (specify length)
- EPRO PR9376 — Mounting bracket / adapter kit
- Bently Nevada 3500/44M — Position monitor rack card (alternative system)
- DIN Rail Power Supply 24 VDC — For signal conditioner excitation
Contact [email protected] for complete BOM quotations and system integration support.
Compliance & Industry Standards
- Designed in accordance with IEC 60068 (Environmental Testing for Electronic Equipment)
- Compatible with API 670 — Machinery Protection Systems standard for turbine monitoring
- EMC compliance per EN 61000 series for industrial environments
- RoHS compliant materials
- CE marked (EU Declaration of Conformity available upon request)
Quality Assurance & Sourcing
All EPRO PR9350/02-S2 units supplied by Konmask.com are:
- Sourced from authorized EPRO distributors or verified surplus channels with full traceability documentation
- Inspected for physical integrity, connector condition, and cable sheath prior to dispatch
- Shipped with original manufacturer labeling and part number verification
- Backed by our 30-day return policy for DOA (Dead on Arrival) units
- Available with optional calibration certificate — request at time of order
How to Source This Part
- Add to Cart — Click “Buy Now” or “Add to Cart” above for immediate checkout.
- Request a Quote — For bulk orders (5+ units), OEM pricing, or project-based procurement, email [email protected] with your PO requirements.
- Expedited Shipping — DHL Express, FedEx International Priority, and UPS Worldwide available. Typical lead time: 3–7 business days from Hong Kong warehouse.
- Export Documentation — Commercial invoice, packing list, and certificate of origin provided for all international shipments.
Application-Specific FAQ
Q: Is the PR9350/02-S2 a direct replacement for Bently Nevada position sensors?
A: The PR9350/02-S2 is an EPRO-native LVDT designed for EPRO MMS6000 signal conditioners. It can interface with Bently Nevada 3500 systems using an appropriate LVDT input card (e.g., 3500/44M), but verify excitation frequency and range compatibility with your system engineer before installation.
Q: What does the “/02” suffix indicate in PR9350/02-S2?
A: The “/02” designates the measurement range variant (±2 mm stroke). Other variants include /01 (±1 mm) and /05 (±5 mm). Ensure your valve travel matches the sensor range to avoid signal saturation.
Q: Can this sensor operate in hydrogen-cooled generator environments?
A: The PR9350/02-S2 is rated IP67 but is not ATEX/IECEx certified for explosive atmospheres. For hydrogen-cooled or Zone 1/Zone 2 hazardous areas, consult EPRO for the appropriate Ex-rated variant.
Q: What signal conditioner is required?
A: The EPRO MMS6220 is the recommended signal conditioner for this sensor within the MMS6000 system. Third-party LVDT conditioners with matching excitation voltage and frequency can also be used — contact us for compatibility guidance.
Q: Do you offer installation or commissioning support?
A: Konmask.com provides remote technical support for sensor installation and loop calibration. On-site commissioning services can be arranged through our partner network — inquire via email.
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