Epro Emerson PR9268/617-100 Velocity Sensor

The Emerson PR9268/617-100, also cataloged as the PR9268 Electrodynamic Vibration Velocity Sensor, operates as a dedicated hardware component for continuous vibration velocity measurement within turbomachinery monitoring platforms.

Hardware Specifications

4-20 mA HART Loop Protocol & Channel Isolation

Output signals generated by the passive electrodynamic coil module connect directly to system signal conditioners or 4-20 mA HART loop protocol transmitters. Incorporating channel-to-channel isolation within monitoring racks prevents common-mode noise corruption and eliminates ground loop currents across long-distance field cable runs.

Frequently Asked Questions

Q: Does the PR9268/617-100 require an external power supply to output vibration signals? A: No, the sensor uses an electrodynamic seismic element that self-generates a proportional voltage signal relative to mechanical velocity.

Q: What housing and cable construction materials are used to withstand harsh environments? A: The sensor body is constructed from stainless steel with an IP65 protection class, and it utilizes an integrated PTFE cable rated for continuous exposure from -40 to +120 deg C.

Field Installation Guidelines

• Ensure a minimum of 5 full threads of engagement when securing mounting studs into the bearing casing port.
• Route PTFE cable through grounded metal conduit away from high-voltage motor leads and variable frequency drive (VFD) output wiring to prevent noise interference.
• Verify that signal cable shielding is grounded at a single point (typically at the cabinet barrier or rack terminal) to prevent ground loops.
• Mount the sensor strictly aligned along the required horizontal or vertical measurement axis before applying final mounting torque.