Bently Nevada 990-04-70-02-00 990 Series 4-20mA Vibration Transmitter

Product Description

The Bently Nevada 990-04-70-02-00 is a high-performance, 2-wire vibration transmitter designed to provide continuous machinery protection by converting proximity probe signals into a standardized 4–20 mA analog output. Part of the 990 Series, this integrated transmitter eliminates the need for separate rack-mounted monitors, allowing for direct interface with PLCs, DCS, or SCADA systems. This specific configuration is optimized for high-fidelity vibration monitoring in critical rotating assets, ensuring real-time data for predictive maintenance.

The 990-04-70-02-00 follows a precise configuration logic: the 04 code signifies a full-scale measurement range of 0–4 mils pp (0–100 µm pp), the 70 designates a 7.0-meter system length calibration, and the 02 indicates a panel-mount configuration (typically without the DIN rail clips found on the 01 variant). Engineered to withstand the rigors of industrial environments, it features a rugged enclosure rated for extreme temperatures and provides a linear output proportional to peak-to-peak displacement. This transmitter is a primary choice for balancing high accuracy with simplified system architecture in API 670 compliant applications.

Technical Specifications

Hardware parameters and electrical ratings for the 990-04-70-02-00: