Bently Nevada 990-04-XX-01-00 | Two-wire Vibration Transmitter

Technical Specifications for 990-04-XX-01-00

• Brand: Bently Nevada
• Model: 990 Vibration Transmitter
• Product No.: 990-04-XX-01-00
• Frequency Response: 5 Hz to 6,000 Hz ±0.3 dB
• Full-Scale Range: 0-4 mils (0-100 μm pp)
• Operating Temperature Range: -35°C to +85°C (-31°F to +185°F)
• Storage Temperature Range: -52°C to +100°C (-62°F to +212°F)
• Probe Case Material: AISI 303 or 304 Stainless Steel (SST)
• Probe Cable: 75Ω coaxial, FEP insulated
• Cable Armor (Optional): Flexible AISI 302 SST with optional FEP outer jacket
• Weight: 0.43 kg (0.9 lbm) for transmitter, 0.82 kg total
• Power Supply: +12 to +35 Vdc at the transmitter terminal
• Output Signal: 4-20 mA (±1.5% accuracy)
• Target Size: Minimum 9.5 mm (0.375 in) diameter
• Probe Gap: 0.5 mm to 1.75 mm (20 mils to 55 mils)
• Mounting Option: 35 mm DIN rail clips
• Agency Approval Option: No approval required
• Maximum Loop Resistance: 1,000 Ω including cable at 35 Vdc
• Current Limiting: 23 mA typical

Model Suffix Options

• 04: Full-scale range of 0-4 mils (0-100 μm pp)
• XX: System Length options:
  • 50: 5.0 meters (16.4 feet)
  • 70: 7.0 meters (23.0 feet)
• 01: Mounting with 35 mm DIN rail clips
• 00: No agency approval required

FAQ

1. What is the maximum probe lead distance for the 990 Vibration Transmitter?
   • The maximum cable distance for the proximitor sensor output (BNC connector) is 3 meters (10 feet).
2. Can I customize the cable length for my application?
   • Yes, the system length is customizable, with options of 5 meters or 7 meters.
3. What happens if the device detects a fault?
   • In the event of a fault, the signal output drops to less than 3.6 mA within 100 µs, and recovery occurs within 2-3 seconds after the fault condition is cleared.
4. Is the product suitable for use in hazardous areas?
   • Yes, it is designed for use in non-hazardous Zone 2 or Div 2 areas.

For more detailed information:990 Vibration Transmitter Datasheet