Product Overview

The Emerson Epro PR9268/201-000 is a high-precision electrodynamic velocity sensor engineered for the absolute vibration monitoring of heavy rotating machinery. As part of the AMS 6500 Classic Systems family, this transducer is specifically designed to measure casing vibration in demanding industrial environments. It excels at capturing critical mechanical data from steam and gas turbines, hydro-turbines, compressors, and large-scale pumps.

Unlike standard accelerometers, the PR9268/201-000 operates on an electrodynamic principle, allowing it to provide a high-voltage output proportional to vibration velocity without the need for external power in many configurations. This makes it an exceptionally reliable component for long-term machine health monitoring and protective systems, ensuring that structural anomalies like imbalance or bearing degradation are detected before catastrophic failure occurs.

Technical Characteristics

• Exceptional Sensitivity: Calibrated to 17.5 mV/mm/s, providing clear signal resolution for low-to-mid frequency mechanical oscillations.

• Broad Frequency Response: Optimized for a working range from 14 Hz to 1000 Hz, covering the primary rotational frequencies of most industrial turbomachinery.

• Low Transverse Sensitivity: Maintains high measurement integrity with a transverse response of less than 10% (0.1) at 80 Hz, isolating vertical or horizontal vibration effectively.

• Dynamic Range and Linearity: Supports vibration amplitudes up to 500 µm peak-to-peak with a linearity deviation of less than 2%, ensuring data accuracy across varying load conditions.

• Ruggedized Durability: Designed to endure continuous accelerations of up to 10g and intermittent shocks of up to 20g, ideal for the harsh conditions of power plants and refineries.

Specifications

• Manufacturer: Emerson (Epro)

• Model Number: PR9268/201-000

• Transducer Type: Electrodynamic Velocity Sensor

• Natural Frequency: 14 Hz ± 7% (at 20°C)

• Operating Frequency Range: 14 Hz to 1000 Hz

• Sensitivity: 17.5 mV/mm/s

• Weight: 0.94 kg

• Dimensions: 30.0 x 24.0 x 7.5 cm

• HS Code: 8537101190

• System Category: AMS 6500 / DCS Monitoring

• Discontinuation Status: Legacy (End of Life: Dec 31, 2018)

Application Field

This velocity transducer is a standard requirement for vibration protection and condition monitoring in sectors such as:

• Power Generation (Gas, Steam, and Hydroelectric Turbines)

• Petrochemical Refining (Centrifugal Compressors and Large Blowers)

• Water Management (High-Capacity Industrial Pumps)

• Mining and Metals (Ventilation Fans and Heavy Drives)