Emerson PR9268/200-000 Vertical Velocity Sensor
A vertical mechanical velocity sensor with a 3 m armored cable and Harting plug for machinery-protection case-vibration channels.
Product Identification
PR9268/200-000 is a self-powered Emerson electrodynamic sensor for absolute vibration measurement on turbine, compressor, pump and fan casings. The /20 design is installed vertically within its specified inclination envelope.
Its ordering digits select a 3 m armored cable and Harting plug. The sensing element provides 28.5 mV/mm/s sensitivity across a 4 to 1000 Hz frequency range.
Engineering Data
| Manufacturer | Emerson |
|---|---|
| Model | PR9268/200-000 |
| Sensor Type | Mechanical spring-mass velocity sensor |
| Orientation | Vertical; ±30° without sinking current, ±60° with sinking current |
| Sensitivity | 28.5 mV/mm/s (723.9 mV/in/s) |
| Frequency Range | 4 to 1000 Hz |
| Natural Frequency | 4.5 Hz ±0.75 Hz at 20°C |
| Temperature Range | -20 to +100°C |
| Cable | 3 m, armored |
| Cable End | Harting plug |
| Protection | IP55 |
| Power | Self-powered |
Functions
- Converts absolute casing vibration velocity directly into an electrical signal.
- Covers low-frequency machinery behavior from 4 Hz.
- Uses a protected three-meter lead and factory Harting termination.
- Supports machinery-protection and condition-monitoring inputs designed for the PR9268 signal.
Applications
- Industrial drive and machinery-protection maintenance
- Configuration-controlled spare replacement
- Planned outage and reliability support
Lifecycle
- Retain the complete model, hardware revision, host equipment and removal photographs in the asset record.
- Keep the spare clean, dry and protected from electrostatic discharge, connector damage and cable deformation.
- Review current manufacturer lifecycle information and an approved migration path before a critical shutdown.
FAQ
PR9268/200-000: What should be compared before replacing an older PR9268 sensor?
Compare orientation, sensitivity, cable length, armor, connector, approval, pinout and monitor load—not only the PR9268 family marking.
PR9268/200-000: How can connector mismatch be avoided?
Photograph the installed Harting plug and receptacle, record pin numbers and keying, and include the monitor-side wiring drawing with the enquiry.
PR9268/200-000: What mechanical checks matter during installation?
Confirm a flat mounting surface, correct orientation, secure cable support and no preload or impact on the spring-mass sensor body.
PR9268/200-000: What baseline should be retained before shutdown?
Save overall velocity, spectrum, phase or polarity where used, alarm setpoints and the channel diagnostic state.
PR9268/200-000: How should a spare be stored?
Protect the connector and cable, avoid shock and strong magnetic fields, keep it dry, and retain its label and certificate with the package.
PR9268/200-000: What indicates a successful channel return to service?
The signal should have correct polarity and scaling, a stable noise floor, no diagnostic fault and a baseline consistent with machine condition.
