EPRO PR9268/300-000 Electrodynamic Velocity Sensor

The EPRO PR9268/300-000, also cataloged as the PR9268 Velocity Sensor, operates as a dedicated hardware component for absolute bearing housing vibration measurement within MMS6000 and AMS6500 machine monitoring platforms.

Hardware Specifications

Eddy-Current Probe Scaling & Gap Voltage Validation

The electrodynamic PR9268/300-000 sensor utilizes internal seismic mass movement relative to a fixed permanent magnet to generate self-induced voltage signals proportional to vibration velocity. When deployed in tandem with proximity probes, the sensor complements eddy-current probe scaling and gap voltage validation parameters by supplying absolute structural vibration metrics to evaluate complete rotor dynamics. The sealed stainless steel construction provides internal cross-talk suppression and mechanical dampening, ensuring high-amplitude casing vibrations do not corrupt transient phase data during machine startup or coast-down cycles.

Frequently Asked Questions

Q: Does the PR9268/300-000 velocity sensor require an external DC power supply to operate?

A: No. The sensor operates via electromechanical induction, generating an AC voltage output directly proportional to mechanical vibration velocity without requiring external excitation power.

Q: How does the IP65 rating affect sensor placement in harsh industrial settings?

A: The IP65 stainless steel housing protects internal electromagnetic components against dust ingress and low-pressure water streams across operating temperatures from -20 to +100 deg C, allowing direct mounting on machine bearing pedestals.

Field Installation Guidelines

Mount the PR9268/300-000 sensor vertically or horizontally onto a flat, rigid surface on the bearing housing using a dedicated threaded mounting stud. Ensure the mating surface is clean, unpainted, and torqued to mounting specifications to ensure accurate vibration transmission without resonance dampening.

Route output cabling through flexible armored conduit to prevent physical abrasion and mechanical fatigue. Connect the cable shield to a single-point earth ground at the signal conditioning module or control system terminal block, leaving the shield ungrounded at the sensor housing to prevent ground loop currents.