990-08-50-02-CN 990 Vibration Transmitter Bently Nevada

Bently Nevada 990-08-50-02-CN Vibration Transmitter

Key Technical Specifications

• Brand & Model: This unit is the Bently Nevada 990-08-50-02-CN.
• Measurement Range: The full-scale range is 0 to 8 mils peak-to-peak (0-200 µm pp).
• Power Supply: It operates on a wide range of +12 to +35 Vdc.
• Signal Output: It provides a standard 4 to 20 mA two-wire current signal.
• Output Accuracy: The 4-20 mA loop accuracy is within ±1.5% over the full-scale range.
• Frequency Response: The device has a broad frequency response from 5 Hz to 6,000 Hz.
• System Length: It is configured for a 5.0 meter (16.4 feet) extension cable system.
• Maximum Loop Resistance: Supports up to 1,000 Ω at 35 Vdc, including cable resistance.
• Probe Gap Requirement: For proper operation, gap the probe between 0.5 and 1.75 mm (20-55 mils) from the target.

Installation & Environmental Details

• Mounting Style: This version uses a bulkhead screw mounting (Option 02) for secure installation.
• Hazardous Area Certification: It carries specific country agency approvals (Option CN) for use in Non-Hazardous and Zone 2/Division 2 areas.
• Target Size: The minimum target diameter required is 9.5 mm (0.375 inches).
• Sensor Connection: For direct Proximitor output via BNC, the maximum cable distance is 3 meters (10 feet).
• Fault Response: During a "NOT OK" condition, the output drops to less than 3.6 mA within 100 microseconds.

Frequently Asked Questions (FAQ)

• Q: What is the exact measurement range of this transmitter?
  A: This 990-08-50-02-CN model is set for a 0 to 8 mils peak-to-peak vibration range.
• Q: What power supply do I need for this 4-20 mA transmitter?
  A: You need a +12 to +35 Vdc power source connected to its terminals.
• Q: Can I use this device in a hazardous location?
  A: Yes, this specific model has agency approvals for use in Zone 2 and Division 2 hazardous areas.
• Q: How do you adjust the zero and span on this unit?
  A: The Bently Nevada 990 transmitter features convenient and non-interacting external zero and span adjustments.
• Q: What happens if the probe fails or loses signal?
  A: The system triggers a "NOT OK" condition. The output then goes to less than 3.6 mA to clearly indicate a fault.

For product inquiries, please contact us: sales@nex-auto.com or +86 153 9242 9628.

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