Overview

The Bently Nevada 330752-25 High Temperature Velomiter System is designed for high-temperature applications, providing precise vibration measurements across a wide frequency range.

Features

• Length: 2.5 meters
• Sensitivity: 5.7 mV/mm/s (145 mV/in/s) ±5%
• Frequency Response:
  • 15 to 2000 Hz (900 to 120,000 cpm) ± 3.0 dB
  • 20 to 1000 Hz (1,200 to 60,000 cpm) ± 0.9 dB
• Transient Temperature Sensitivity: 0.0762 mm/s/°C (0.003 in/s/°C), typical
• Amplitude Range:
  • 635 mm/s (25 in/s) peak below 680 Hz
  • 2940 m/s² (300 g) peak above 680 Hz
• Vibration Linearity: ±2% to 152 mm/s (6 in/s) peak
• Mounted Resonant Frequency: Greater than 5 kHz
• Output Bias Voltage: -12 ±2.0 VDC
• Broadband Noise Floor (15Hz to 2kHz): 0.127 mm/s (0.005 in/s) rms nominal
• Maximum Cable Length: 305 meters (1000 feet) with no signal degradation

Environmental Specifications

• Operating and Storage Temperature Range:
  • Sensing Head: -55°C to +400°C (-67°F to +752°F)
  • Integral Hardline Cable: -55°C to +400°C (-67°F to +752°F)
  • Electronics: -55°C to +121°C (-67°F to +250°F)
• Shock Survivability: 24,535 m/s² (2500 g) peak
• Relative Humidity: To 100% non-submerged; case is hermetically sealed

Grounding

• Case Isolated