The Bently Nevada 990-05-50-02-01 vibration transmitter is a compact, loop‑powered 2‑wire device designed for OEM applications such as centrifugal compressors, pumps, motors, and fans. As part of the 990 Series, it delivers a reliable 4–20 mA output proportional to vibration amplitude, enabling seamless integration into machinery control systems for continuous monitoring and protection.
Key Features
2‑wire, loop‑powered design with 4–20 mA output
Accepts input from 3300 NSv proximity probes and extension cables
Integrated conditioning circuit (no external Proximitor required)
Peak‑to‑peak vibration measurement for accurate monitoring
CSA Division 2 certified for hazardous environments
Bulkhead screw mounting for easy installation
Non‑interacting zero/span adjustments for simplified calibration
Test input pin for quick loop verification
Not OK/Signal Defeat circuit prevents false alarms from probe faults
Potted construction for durability in harsh industrial conditions
Provides dynamic vibration and gap voltage outputs via coaxial connector
OEM equipment designs with limited installation space
FAQ
Q: Does this transmitter require a separate Proximitor sensor? A: No. It includes an integrated conditioning circuit, eliminating the need for external Proximitor units.
Q: Can it be used in hazardous environments? A: Yes. It carries CSA Division 2 certification for use in industrial settings.
Q: What diagnostic outputs are available? A: Non‑isolated PROX OUT and COM terminals, plus a coaxial connector for dynamic vibration and gap voltage signals.
