Introduction
The Bently Nevada 990‑04‑50‑01‑00 990 Vibration Transmitter is a robust industrial sensor interface designed to convert proximity‑based vibration signals into a standardized current output for machinery monitoring and control systems. Specifically engineered to work with Bently Nevada 3300 NSv non‑contacting proximity probes, this transmitter delivers a proportional 4–20 mA output representative of vibration amplitude. Its rugged construction, adjustable range, and simple two‑wire loop‑powered design make it a reliable solution for vibration trend monitoring and protective logic integration in industrial facilities.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 990‑04‑50‑01‑00 |
| Product Type | Vibration Transmitter |
| Input Sensor Compatibility | 1 × 3300 NSv Non‑Contacting Proximity Probe |
| Output Signal | 4–20 mA DC proportional to vibration amplitude |
| Power Supply | +12 V to +35 V DC (loop‑powered) |
| Loop Resistance | Max. 1,000 Ω including cable |
| Current Limiting | ~23 mA typical |
| Frequency Response | ~5 Hz to 6,000 Hz ±3 dB |
| Minimum Target Diameter | ~9.5 mm |
| Mounting Options | DIN‑rail clips or bulkhead screws |
| Operating Temperature | ~‑35 °C to +85 °C |
| Storage Temperature | ~‑40 °C to +100 °C |
| Humidity Tolerance | Up to condensing non‑submerged environments |
| Dimensions | Compact industrial transmitter form factor |
| Weight | ~0.43 kg (0.95 lb) approximate |
| Origin | USA production standard |
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