Product Overview

The 990-04-XX-03-00 is a two-wire, loop-powered vibration transmitter engineered by Bently Nevada for integrated machinery protection. This module combines the functionality of a proximitor sensor into a single, compact housing, eliminating the need for external signal conditioning units. The 990-04-XX-03-00 is designed to accept inputs from Bently Nevada 3300 NSv proximity probes and extension cables, processing high-frequency eddy current signals into a linearized 4–20 mA analog output. This standardized output allows for direct integration into PLCs, DCS, and SCADA systems, providing a cost-effective and space-efficient solution for monitoring radial vibration in high-speed rotating equipment.

Detailed Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Designation: 990 Vibration Transmitter

• Order Code: 990-04-XX-03-00

• Input Compatibility: Bently Nevada 3300 NSv Proximity Probe & Extension Cable

• Output Signal: 4–20 mA DC (Proportional to peak-to-peak vibration)

• Full-Scale Range: 0–4 mils (0–100 μm) peak-to-peak

• Frequency Response: 5 Hz to 1,000 Hz (±0.3 dB)

• System Length Options: Supports 5.0 meter or 7.0 meter total system lengths

• Power Supply: 12 to 35 V DC (Loop-powered)

• Accuracy Class: Optimized for Class 1 machinery protection loops

• Operating Temperature: -35°C to +85°C (-31°F to +185°F)

• Storage Temperature: -52°C to +100°C (-62°F to +212°F)

• Mounting Configuration: DIN-rail or bulkhead mounting compatible

• Housing Material: Industrial-grade reinforced composite

• Weight: 0.43 kg (Transmitter unit)

• Dimensions: 7.6 cm × 10.2 cm × 6.3 cm

• Certifications: CE Certified, RoHS Compliant