Description
Product Core Brief
- Model: PR9268/301-000
- Brand: Emerson (EPRO)
- Series:
- Core Function: Measures horizontal absolute vibration velocity on bearing housings and machine casings.
- Product Type: Electrodynamic Velocity Sensor
- Key Specs: 28.5mV/mm/s | 4–1000Hz | IP55 | 5m Armored Cable
- Note: New original, in stock, 12-month warranty.
Key Technical Specifications
- Sensor Type: Electrodynamic (moving coil)
- Measurement Axis: Horizontal
- Sensitivity: 28.5 mV/mm/s (±5% at 80Hz, 10mm/s)
- Frequency Response: 4 Hz to 1000 Hz
- Max Vibration: 3 mm p-p (2000 μm p-p)
- Operating Temperature: -40°C to +70°C
- Protection Class: IP55
- Insulation Resistance: >1MΩ @ 500VAC
- Cable: 5m armored, integral to sensor
- Dimensions: Φ35 × 78 mm
- Weight: ~200g
- Mounting: Two-bolt flange (M6)
Product Introduction
The Emerson EPRO /301-000 is a horizontal electrodynamic velocity sensor for absolute vibration monitoring of turbomachinery—steam turbines, compressors, pumps, and fans. It outputs a voltage signal directly proportional to vibration velocity, enabling direct vibration analysis without signal conversion.
This unit features a stainless steel housing, 5m armored cable, and IP55 protection for industrial environments. Its calibrated 28.5mV/mm/s sensitivity ensures consistent, repeatable data for condition monitoring and predictive maintenance.
FAQ (Frequently Asked Questions)
Q: What’s the difference between /301-000 and eddy-current probes?A: This sensor measures absolute casing vibration (velocity). Eddy-current probes measure relative shaft displacement. They serve different monitoring points.
Q: Can I use it vertically?A: No. It is calibrated for horizontal axis only. Vertical mounting causes sensitivity shift and invalid data. Use /001-000 for vertical.
Q: Is the cable replaceable?A: No. The 5m armored cable is factory-integrated. Damage requires full sensor replacement.
Q: What monitor systems are compatible?A: Works with EPRO MMS6000, DeltaV, and most 4–20mA or voltage-input vibration monitors.
Q: How often to calibrate?A: Every 2 years per ISO 10816. Recalibration required after mechanical shock or cable damage.
Q: Does it need external power?A: No. Electrodynamic design is passive—no external supply. It generates voltage from vibration motion.
Q: What if the sensor fails in service?A: Monitor shows zero or erratic signal. Replace during next planned outage; no immediate trip risk (unless vibration is unmonitored).
