Bently Nevada 990-08-50-02-01 Vibration Transmitter

Bently Nevada 990-08-50-02-01 Vibration Transmitter: Robust Industrial Monitoring

Engineered for durability in demanding environments, the Bently Nevada 990-08-50-02-01 vibration transmitter delivers precise machinery health data. This U.S.A.-made sensor features a secure bulkhead mount and critical safety certification, converting vibration into a reliable 4-20 mA signal. Access complete engineering details by downloading the full product datasheet here.

Product Identification & Configuration

• Manufacturer: Bently Nevada, a trusted name in predictive maintenance.
• Full Product Number: 990-08-50-02-01.
• Type: 990 Series Vibration Transmitter.
• Origin: Manufactured in the United States, ensuring premium quality control.
• Range Code (08): Calibrated for a 0-8 mils peak-to-peak (0-200 µm pp) full-scale measurement.
• Cable Code (50): Equipped with a 5.0 meter (16.4 foot) integrated system cable.
• Mounting Code (02): Designed for fixed bulkhead screw mounting on panels or enclosures.
• Approval Code (01): Certified for use in CSA Division 2 hazardous locations.

Electrical Characteristics & Signal Integrity

• Power Input: Operates on a +12 to +35 V DC supply; 28 V DC is commonly used.
• Output Signal: Industry-standard 4 to 20 mA two-wire loop output for direct PLC/DCS integration.
• Output Accuracy: Maintains ±1.5% accuracy across the entire specified measurement range.
• Loop Compliance: Supports a maximum loop resistance of 1,000 Ω (including cable) at 35 V DC.
• Current Protection: Integrated 23 mA typical current limiting safeguards the electronics.
• Fault Indication: Provides a fast "NOT OK" signal by driving output below 3.6 mA within 100 microseconds.

Mechanical Specifications & Sensor Requirements

• Compatible Probe: Interfaces with one Bently Nevada 3300 NSv Series non-contacting proximity probe.
• Critical Probe Gap: The connected probe must be positioned 0.5 to 1.75 mm (20-55 mils) from the target.
• Minimum Target: Requires a target with a minimum diameter of 9.5 mm (0.375 inches).
• Frequency Performance: Delivers a flat frequency response from 5 Hz to 6,000 Hz (+0, -3 dB).
• Unit Weight: Compact and lightweight at 0.43 kg (0.9 pounds).
• Calibration: Features external, non-interacting zero and span potentiometers for field adjustment.

Installation & Integration Guide

• Securely fasten the transmitter using the provided hardware for bulkhead screw mounting.
• Connect the unit to a compatible 3300 NSv proximity probe and appropriate extension cable.
• Note that the maximum recommended cable length from the probe BNC connector is 3 meters (10 feet).
• Apply DC power within the specified range to establish the 4-20 mA communication loop.

Safety Certifications & Approved Areas

• The 990-08-50-02-01 is approved for installation in Non-Hazardous, Zone 2, and Class I Division 2 locations.
• Its CSA Division 2 certification makes it suitable for areas where flammable hazards are not normally present.

Frequently Asked Questions (FAQ)

• Q: Is this a genuine, new Bently Nevada product?
  A: Absolutely. We guarantee this is a brand new, 100% authentic Bently Nevada transmitter.
• Q: How is model 990-08-50-02-01 different from other 990 models?
  A: The key difference is the "02" suffix, which specifies a bulkhead screw mount instead of a DIN rail clip.
• Q: What is the required probe gap for accurate measurement?
  A: For full-scale accuracy, the probe must be gapped between 0.5 and 1.75 mm (20-55 mils) from the target shaft.
• Q: Do you have this specific model in stock?
  A: Yes, the 990-08-50-02-01 is typically available from our inventory for fast order processing.
• Q: What are the shipping and return terms?
  A: We ship globally via FedEx, UPS, and DHL and support a 30-day return policy on unused items in original condition.