Overview

The Bently Nevada 990-05-70-01-01 Vibration Transmitter is designed to convert the displacement signal from a 3300 NSv Proximity Probe into a 4-20 mA output for reliable vibration monitoring. It features flexible installation options, accuracy, and high-performance capabilities for industrial applications.

Features

• Full-scale Option: 0-5 mils pp (0-125 μm pp)
• System Length Option: 7.0 meters (23.0 feet)
• Mounting Option: 35 mm DIN rail clips
• Agency Approval Option: CSA Division 2

Technical Specifications

• Input: Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable
• Power Supply: Requires +12 to +35 Vdc input at the transmitter terminal
• Signal Output:
  • 4 to 20 mA signal output in 2-wire configuration
  • Accuracy within ±1.5% over the specified full-scale range
• Probe Gap: Probe must be gapped between 0.5 mm and 1.75 mm (20 to 55 mils) from the target for proper measurement
• Maximum Loop Resistance: 1,000 Ω including cable at 35 Vdc
• Current Limiting: 23 mA typical
• Zero and Span: Non-interacting external adjustments
• Signal Defeat: Signal output drops below 3.6 mA within 100 µs after a Not OK condition occurs and restores within 2-3 seconds once the issue is resolved

Environmental Limits

• Transmitter Temperature:
  • Operating: -35°C to +85°C (-31°F to +185°F)
  • Storage: -52°C to +100°C (-62°F to +212°F)
• Probe Temperature:
  • Operating: -52°C to +177°C (-62°F to +351°F)
  • Storage: -52°C to +177°C (-62°F to +351°F)
• Humidity: 100% condensing (non-submerged), with protection of coaxial connectors