990-05-XX-03-CN Bently Nevada | Two-wire Vibration Transmitter

Overview:

The Bently Nevada 990 Vibration Transmitter (Model: 990-05-XX-03-CN) is a high-performance monitoring solution designed for industrial vibration measurement. It offers a broad frequency response and exceptional signal accuracy, ensuring reliable data transmission in various demanding environments.

Technical Specifications:

• Brand: Bently Nevada
• Model: 990 Vibration Transmitter 990-05-XX-03-CN
• Suffix Meaning:
  • 05: Full-scale range 0-5 mils pp (0-125 μm pp)
  • XX: System length options (50 = 5.0 meters, 70 = 7.0 meters)
  • 03: Mounting option (DIN clips and screws)
  • CN: Agency approval (Country-specific)

Dimensions and Weight:

• Weight: 0.82 kg (probe) + 0.43 kg (transmitter)
• Cable Armor: Optional flexible AISI 302 stainless steel with FEP jacket

Environmental Operating Conditions:

• Operating Temperature: -35°C to +85°C (-31°F to +185°F)
• Storage Temperature: -52°C to +100°C (-62°F to +212°F)
• Tensile Strength: 222 N (50 lbf) for probe case to lead connection

Electrical and Signal Details:

• Frequency Response: 5 Hz to 6,000 Hz +0, 3 dB
• Power Supply: Requires +12 to +35 Vdc at transmitter terminal
• Signal Output: 4-20 mA (±1.5% accuracy over full-scale range)
• Probe Gap: Must be between 0.5 and 1.75 mm (20 to 55 mils) for proper operation
• Maximum Loop Resistance: 1,000 Ω (including cable)

Additional Options:

• Cable Type: 75Ω coaxial with FEP insulation
• Transducer Material: Polyphenylene sulfide (PPS) for durability
• Mounting Options: Includes DIN clips and screws for installation
• Signal Defeat: Signal output drops to less than 3.6 mA within 100 µs during a Not OK condition and restores within 2-3 seconds after the issue is resolved.

FAQ:

Q1: What type of applications can the Bently Nevada 990 Vibration Transmitter be used for?

• The transmitter is ideal for monitoring vibration levels in rotating machinery like motors, pumps, and turbines. It is used in predictive maintenance and condition monitoring applications in both non-hazardous and hazardous areas.

Q2: What is the full-scale range of the vibration transmitter?

• The full-scale range of this transmitter is 0-5 mils pp (0-125 μm pp).

Q3: What is the maximum loop resistance?

• The maximum loop resistance for the transmitter is 1,000 Ω, including the cable.

Q4: Can I use this transmitter in hazardous locations?

• Yes, the Bently Nevada 990 is suitable for non-hazardous and Zone 2 or Div 2 hazardous area locations.

For more detailed information:990 Vibration Transmitter Datasheet