Overview

The EPRO PR9268/201-100 is an electrodynamic velocity sensor designed for measuring absolute vibrations in industrial machinery. It is part of the PR9268 series and excels in applications such as steam turbines, gas turbines, compressors, pumps, and fans.

Features

• Measurement Range: 4 to 1000 Hz (240 to 60,000 cpm)
• Sensitivity: 28.5 mV/mm/s (723.9 mV/in/s) at 80 Hz and 20°C
• Operating Temperature: -20°C to +100°C (-4°F to +212°F)
• Relative Humidity: 0 to 100%, non-condensing
• Protection Class: IP55 (splash-proof)
• Material: Durable stainless steel
• Cable Material: PTFE, 3x 0.5 mm²
• Weight: 930 g

Dynamic Performance

• Natural Frequency: 4.5 Hz ± 0.75 Hz at 20°C (68°F)
• Transverse Sensitivity:
  • 0.13 for PR9268/20x-x00 at 110 Hz
  • 0.27 for PR9268/30x-x00 at 110 Hz
• Vibration Amplitude (Mechanical Limit): 3000 µm (4000 µm peak-to-peak)
• Amplitude Linearity: Less than 2%
• Maximum Acceleration:
  • Continuous: 10 g (98.1 m/s²) peak-to-peak
  • Intermittent: 20 g (196.2 m/s²) peak-to-peak
• Maximum Transverse Acceleration: 2 g (19.62 m/s²)
• Damping Factor: ~0.56 at 20°C (68°F), ~0.42 at 100°C (212°F)
• Resistance: 1875 Ω ± 10%
• Inductance: ≤ 90 mH
• Active Capacity: Less than 1.2 nF