990-04-50-01-01 Bently Nevada | Two-wire Vibration Transmitter

Overview

The Bently Nevada 990-04-50-01-01 Vibration Transmitter monitors machinery vibrations in industrial settings. It pairs with 3300 NSv Proximity Probes for precise detection. This device uses a 4-20 mA output for easy integration into control systems. Built with CSA Division 2 certification and DIN rail mounting, it suits high-risk areas. Made in the USA, optional COO available.

Technical Specifications

• Brand: Bently Nevada
• Model Code Breakdown:
  

  990-04-50-01-01

  ▶ 04: 0-4 mils range (0-100 μm) ▶ 50: 5-meter system length ▶ 01: 35 mm DIN rail clips ▶ 01: CSA Division 2 certified

• Power Supply: 12-35 Vdc (±10% tolerance)
• Output Signal: 4-20 mA linear to vibration level
• Accuracy: ±1.5% of span at 25°C
• Probe Gap Tolerance: 0.5-1.75 mm (20-55 mils)
• Fault Response: Output drops to <3.6 mA within 100 μs
• Recovery Time: 2.5 sec (typical) after fault clearance
• Frequency Bandwidth: 5 Hz–6 kHz (±3 dB)
• Min Target Diameter: 9.5 mm (0.375 in)
• Cable Limit: 3m shielded cable (BNC connector)
• Operating Temp: -40°C to +85°C (-40°F to +185°F)
• Loop Resistance: 1,000Ω max at 35 Vdc
• Hazardous Rating: CSA Class I, Div 2, Groups A-D
• Weight: 0.43 kg (0.9 lbs)

For more detailed information:990 Vibration Transmitter Datasheet