Emerson PR9268/601-000 High-Temperature Velocity Sensor
A vertical high-temperature mechanical velocity sensor with a 5 m armored cable and Harting plug for absolute case-vibration measurement.
Technical Summary
PR9268/601-000 is an Emerson electrodynamic velocity sensor for absolute case-vibration measurement on critical turbomachinery. The /60 family is a vertical high-temperature design rated for operation up to 200°C.
The ordering digits select a 5 m armored cable and Harting plug. The sensor is self-powered and is intended for machinery-protection applications on turbines, compressors, pumps and fans.
Specifications
| Manufacturer | Emerson |
|---|---|
| Model | PR9268/601-000 |
| Measurement | Absolute case vibration velocity |
| Orientation | Vertical; ±30° without sinking current, ±60° with sinking current |
| Temperature Range | -20 to +200°C (-4 to +392°F) |
| Frequency Range | 10 to 1000 Hz |
| Sensitivity | 22.0 mV/mm/s ±5% at pin 3 with 100 Ω load; 16.7 mV/mm/s ±5% at pins 1 or 4 with specified loads |
| Cable | 5 m, armored |
| Cable End | Harting plug |
| Protection | IP65 |
| Housing Material | Stainless steel |
| Power | Self-powered |
| Hazardous-Area Basis | Ex ib options for PR9268/60x-000; verify the ordered approval and installation loop |
Features
- Measures casing vibration without an external sensor power supply.
- Extends the PR9268 operating range to high-temperature machinery locations.
- Provides a five-meter protected cable run with a factory Harting termination.
- Supports vertical installation with the permitted inclination and sinking-current conditions.
Compatibility
- Match the monitor input, selected output pin and required load resistance.
- Confirm vertical mounting, inclination and the effect of cable routing on the sensor body.
- Verify mating Harting connector, hazardous-area barriers and the complete approval loop.
- Check that the process temperature and connector location remain within their individual limits.
Replacement
- Record sensor orientation, channel scaling, polarity, cable route and baseline reading.
- Avoid impact, twisting or sharp bends in the armored cable during removal and installation.
- Confirm bias-free output, polarity, channel calibration and alarm response after mounting.
FAQ
PR9268/601-000: Which monitor details should accompany an enquiry?
Provide the monitor model, input card, terminal assignment, selected sensor pin, load resistance and configured engineering units.
PR9268/601-000: How should a buyer confirm the Harting connection will fit?
Send a clear photograph of both connector halves, pin numbering and cable-entry orientation; connector appearance alone is not a sufficient match.
PR9268/601-000: What installation issue most often affects a vertical high-temperature sensor?
Mounting angle and cable force can bias the spring-mass element. Confirm the permitted inclination and secure the cable without loading the sensor body.
PR9268/601-000: Can the cable be shortened in the field?
Treat the factory cable and termination as part of the ordered sensor. Any field modification requires an approved engineering and hazardous-area review.
PR9268/601-000: What should be checked if the replacement reads differently at the same machine condition?
Verify polarity, pin/load selection, monitor scaling, mounting torque, cable strain and the baseline taken before removal.
PR9268/601-000: What documentation is important for an Ex installation?
Retain the exact approval certificate, barrier or isolator data, loop parameters, cable record and site area classification with the channel file.
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