Product Details
Configured for seismic vibration acquisition in rotating machinery, the Emerson EPRO PR9268/300-000 (PR9268/300-000) Electrodynamic Velocity Sensor provides direct electrical execution of velocity-based vibration monitoring.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PR9268/300-000 |
| Brand | Emerson EPRO |
| Weight | 0.3 kg |
| Dimensions | 4.1 cm x 15.9 cm x 10.8 cm |
| Operating Temp | -40 deg C to +80 deg C |
| Power Consumption | 24 VDC |
| Sensitivity | 28.5 mV/mm/s (+/- 5%) |
| Frequency Range | 4 to 1000 Hz (-3 dB) |
Process Control and DCS Connectivity
The PR9268/300-000 integrates with standard DCS and PLC platforms via a 4-20 mA DC output signal, representing the measured vibration velocity. To maintain signal integrity, ensure that channel-to-channel isolation is implemented within the control system input card to prevent ground loop currents from corrupting the low-level data. The sensor output is conditioned internally to provide a standardized current loop, requiring a stable 24 VDC excitation voltage. Field wiring should utilize shielded twisted-pair cables, with the shield terminated at the control cabinet ground bar to mitigate common-mode noise.
Frequently Asked Questions
Q: Can the sensor be mounted in any orientation?
A: Electrodynamic sensors utilize an internal mass-spring system sensitive to gravitational bias. Ensure the mounting orientation aligns with the manufacturer's specified axis for this model to prevent offset errors in the output signal and mechanical wear of the internal suspension.
Q: Is the 4-20 mA output signal loop-powered?
A: This model requires a dedicated 24 VDC power supply. Ensure the voltage at the sensor terminals remains within the specified operating range, accounting for voltage drop across long cable runs.
Field Installation Guidelines
- Mount the sensor body securely to a rigid, flat surface on the machine casing to ensure high-frequency mechanical coupling.
- Use the provided threaded connection to torque the sensor housing to the machinery; verify the connection is tight to prevent structural resonance.
- Terminate the 4-20 mA output to the analog input card; observe correct polarity to avoid circuit damage or signal inversion.
- Route signal cabling through grounded metallic conduit, keeping it physically separated from high-current AC motor leads or power feeds.
- Perform a commissioning test by observing the loop current at rest and during machine operation to verify the correlation between seismic velocity and the 4-20 mA signal output.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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