Machinery Protection Solution – EMERSON PR9268/302-000 | PR9268 Series
The EMERSON PR9268/302-000 is a self-generating electrodynamic velocity sensor engineered for continuous vibration monitoring on rotating and reciprocating machinery. Requiring no external power supply, it converts mechanical motion directly into an electrical signal — making it the preferred choice for plant engineers who demand reliability in harsh industrial environments.
Where This Product Is Used
The PR9268/302-000 is deployed across a wide range of critical industrial applications:
- Power Generation: Steam turbine bearing housings, generator end-shields, and boiler feed pump monitoring
- Oil & Gas: Compressor skids, gas turbine auxiliary systems, and pipeline pump stations
- Petrochemical & Refining: Centrifugal pump trains, agitators, and fan/blower assemblies
- Pulp & Paper / Steel Mills: Rolling mill drives, induced draft fans, and gearbox housings
- Water & Wastewater: Large vertical pump motor bearing caps and cooling tower fan drives
- Marine & Offshore: Diesel generator sets and propulsion auxiliary machinery
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PR9268/302-000 |
| Manufacturer | EMERSON (Epro / Bently Nevada compatible series) |
| Sensor Type | Electrodynamic (Self-Generating) Velocity Sensor |
| Measurement | Absolute Seismic Vibration Velocity |
| Output Signal | Voltage proportional to velocity (mV/mm·s⁻¹) |
| Frequency Range | 10 – 1,000 Hz (typical) |
| Mounting | Threaded stud / flange mount |
| Weight | 1,180 g |
| Housing | Stainless steel, IP67-rated |
| Connector | 2-pin industrial connector |
| Operating Temperature | -40 °C to +120 °C |
| Power Supply | None required (self-generating) |
Why Engineers Specify This Model
- No external power required — passive design eliminates signal conditioner complexity and reduces panel wiring cost
- Direct drop-in replacement for legacy Epro PR9268 series installations without recalibration
- Robust stainless steel housing withstands high-temperature, high-humidity, and chemically aggressive environments
- Wide frequency bandwidth captures both low-speed machinery (fans, compressors) and high-speed turbine harmonics
- Long service life with no moving electronics — MTBF exceeds 100,000 hours in typical plant conditions
- Compatible with standard DCS/PLC vibration monitoring cards (4–20 mA transmitter or direct mV input)
Complete System Bill of Materials
For a complete machinery protection loop using the PR9268/302-000, engineers typically specify:
- PR9268/302-000 — Electrodynamic velocity sensor (this item)
- PR9376 / PR9376A — Signal conditioning transmitter (4–20 mA output)
- PR6423 / PR6424 series — Eddy-current proximity probes (shaft relative displacement)
- PR9268 mounting adaptor / stud kit — M8 or 1/4-28 UNF thread
- Shielded 2-core instrumentation cable (Belden 8762 or equivalent)
- Terminal head junction box (IP65 minimum)
Compliance & Industry Standards
- ISO 10816 / ISO 20816 — Mechanical vibration, evaluation of machine vibration by measurements on non-rotating parts
- ISO 13373 — Condition monitoring and diagnostics of machines
- IEC 60068-2 — Environmental testing (vibration, shock, temperature)
- ATEX / IECEx — Consult factory for zone-rated variants
- CE Marking — Compliant with EU Machinery Directive 2006/42/EC
Quality Assurance & Sourcing
Every PR9268/302-000 unit supplied by Konmask.com is:
- Sourced from authorized EMERSON distribution channels or verified OEM-surplus stock
- Inspected against original EMERSON datasheet tolerances prior to dispatch
- Supplied with original manufacturer packaging and documentation where available
- Traceable via serial number to batch records held on file for 5 years
- Backed by Konmask’s 12-month warranty against manufacturing defects
How to Source This Part
To place an order or request a formal quotation for the EMERSON PR9268/302-000:
- Online: Add to cart directly on this page — stock status shown in real time
- Email RFQ: support@konmask.com — include quantity, required delivery date, and project name
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead time: In-stock units ship within 2 business days; ex-factory orders 4–8 weeks
- MOQ: 1 piece
Application-Specific FAQ
Q: Can the PR9268/302-000 replace an older Epro PR9268/200-000 or /100-000 variant?
A: Yes. The /302-000 suffix denotes the connector and cable configuration. Mechanically and electrically it is interchangeable with earlier PR9268 variants in most installations — verify connector pinout before installation.
Q: Does this sensor require a signal conditioner?
A: No. The electrodynamic design is self-generating. It can feed directly into a high-impedance vibration monitoring card. A transmitter (e.g., PR9376) is only needed if a 4–20 mA loop output is required.
Q: What is the maximum continuous operating temperature?
A: Standard units are rated to +120 °C. For applications above this threshold (e.g., steam turbine exhaust casings), contact Konmask for high-temperature variants.
Q: Is ATEX certification available?
A: ATEX/IECEx zone-rated variants exist within the PR9268 family. Please specify your hazardous area classification when requesting a quotation.
Q: Can I use this sensor with a Bently Nevada 3500 rack?
A: Yes. The PR9268/302-000 output is compatible with Bently Nevada 3500/42M velocity monitor cards when wired to the appropriate input channel. Confirm input impedance requirements with your system integrator.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
