Technical Specifications
- Brand: Bently Nevada
- Model Number: 990-04-50-01-00
- Product Series: 990 Vibration Transmitter
- Input Compatibility: 3300 XL 8mm Proximity Probe and Extension Cable
- Output Signal: 4-20 mA DC (Proportional to peak-to-peak vibration)
- Full-Scale Range: 0-125 µm (0-5 mils) or 0-250 µm (0-10 mils) based on configuration
- Power Requirement: 12 to 35 VDC (Loop-powered)
- Weight: 0.46 kg (approx. 1.0 lb)
- Dimensions: 9.9 x 7.3 x 6.0 cm
- Mounting: DIN-rail or bulkhead mounting
- Operating Temperature: -35°C to +70°C (-31°F to +158°F)
Performance Optimization and Diagnostics
The 990-04-50-01-00 provides essential “NOT OK” signal circuitry to notify control systems if the probe or cable becomes disconnected or malfunctions. This safety feature prevents false readings and ensures the integrity of the machinery protection loop. Additionally, the transmitter supports various full-scale vibration ranges, allowing users to match the sensor’s sensitivity to the specific displacement characteristics of their equipment. Consequently, plant operators gain a reliable tool for early fault detection, helping them avoid unplanned downtime and minimize repair costs for mission-critical machinery.
Installation and System Compatibility
Installing the 990-04-50-01-00 is straightforward thanks to its compact footprint and loop-powered design. Maintenance teams can easily integrate the module into existing control cabinets using standard 35mm DIN rails. Since the transmitter uses the same eddy current technology found in the 3300 XL series, it delivers the precision required for high-speed shaft monitoring. By utilizing this transmitter, facilities achieve a professional-grade monitoring solution that balances technical sophistication with cost-effective implementation for non-API-670 critical machinery.
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