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Description
The Bently Nevada 990-05-XX-01-00 is a two-wire, loop-powered vibration transmitter engineered by Bently Nevada, a global leader in machinery condition monitoring and protection systems. This device accepts input from Bently Nevada’s 3300 NSv proximity probes, converting the displacement signal into a proportional 4-20 mA industry-standard output for integration with PLCs, DCS, or SCADA systems. With an integrated Proximitor sensor that requires no external unit, the 990-05-XX-01-00 is specifically designed for original equipment manufacturers (OEMs) of centrifugal air compressors, pumps, motors, and fans who require a simple, reliable vibration signal for machinery control and protection.
Application Scenarios
In a paper and pulp mill, thousands of rotating assets—from refiners to dryer bearings—require continuous vibration monitoring to prevent unexpected shutdowns. The Bently Nevada 990-05-XX-01-00 is deployed on key equipment, converting shaft vibration into a 4-20 mA signal that feeds directly into the plant’s PLC-based control system. Because the transmitter measures peak-to-peak vibration amplitude using the integrated Proximitor sensor, the mill’s maintenance team receives accurate, real-time data on machine health without the complexity of a full continuous monitoring system. The 990-05-XX-01-00 addresses the critical pain point of undetected bearing wear or unbalance, enabling condition-based maintenance that prevents costly catastrophic failures.
In a large central air conditioning system, cooling tower fans and circulating water pumps operate continuously in high-humidity environments. The Bently Nevada 990-05-XX-01-00 features potted construction that withstands up to 100% condensing humidity, ensuring reliable operation despite the challenging conditions. The transmitter’s compact DIN-rail mounting and simple two-wire connection allow rapid installation, making the 990-05-XX-01-00 an ideal solution for building automation applications where space is limited and reliability is paramount.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 990-05-XX-01-00 (MOD 147202-01 / 165335-01 variants) |
| Manufacturer | Bently Nevada (GE Asset Condition Monitoring) |
| Product Category | Vibration Transmitter / Proximitor Sensor |
| Full-Scale Range | 0-5 mils pp (0-125 μm pp) — “05” suffix indicates this range |
| Signal Output | 4-20 mAdc (2-wire, loop-powered configuration) |
| Power Supply | +12 to +35 Vdc at transmitter terminal |
| Loop Accuracy | ±1.5% over specified full-scale range |
| Input | Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable |
| Probe Gap Requirement | 0.5 to 1.75 mm (20 to 55 mils) from target |
| Maximum Loop Resistance | 1,000 Ω including cable at 35 Vdc |
| Frequency Response | 5 Hz to 6,000 Hz (+0, -3 dB) |
| Operating Temperature | -35°C to +85°C; Storage: -52°C to +100°C |
| Prox Out Scale Factor | 7.87 mV/μm (200 mV/mil) ± 6.5% typical |
| Mounting Options | 35 mm DIN rail clips (standard) or bulkhead mounting screws |
| Weight | Approx. 0.44 – 0.5 kg |
| Construction | Potted for high humidity (up to 100% condensing) environments |
