EMERSON PR9268/201-100 Proximity Sensors

The Epro PR9268/201-100, also cataloged as the PR9268/201-100 Electrodynamic Velocity Sensor, operates as a dedicated hardware component for precise vertical vibration velocity measurement within turbomachinery protection platforms. Operating across turbines, compressors, and pump sets, this sensor measures low-frequency absolute mechanical vibration for continuous condition monitoring.

Hardware Specifications

4-20 mA HART Loop Protocol & Channel Isolation

The Epro PR9268/201-100 generates a self-powered AC millivolt output proportional to dynamic casing vibration. To maintain signal integrity across connected monitoring systems, receiving signal conditioning hardware utilizes channel-to-channel isolation. This isolation suppresses common-mode electrical noise and eliminates ground loop corruption across 4-20 mA HART loop protocol networks during continuous operation.

Frequently Asked Questions

Q: What is the primary physical orientation design for the PR9268/201-100 velocity sensor?

A: The sensor is specifically designed for precise absolute vibration velocity measurements in the vertical direction.

Q: Does the PR9268/201-100 require external DC power for signal generation?

A: No. As an electrodynamic low-frequency transducer, it functions as a self-generating passive sensor producing an AC voltage output.

Field Installation Guidelines

1. Verify that the mounting face on the bearing housing is clean, flat, and tapped perpendicular to the vertical axis.
2. Mount the PR9268/201-100 sensor vertically, ensuring mechanical mounting stud engagement conforms to cabinet structural standards.
3. Inspect the stainless steel housing and PTFE integral cable for physical damage or sharp bends prior to final positioning.
4. Route the cable through grounded conduit, ensuring lateral acceleration exposure remains well under the 2g limit.
5. Terminate overall cable shielding at a single point on the monitor panel ground bar to maintain noise suppression performance.