Bently Nevada 990-10-XX-01-00 MOD:165353-01 990 Vibration Transmitter

Description

The 990-10-XX-01-00 MOD:165353-01 is a loop-powered, two-wire 990 Vibration Transmitter manufactured by Bently Nevada (a Baker Hughes business). It is engineered to provide continuous machinery condition monitoring and asset protection by interfacing directly with plant automation systems. This field-mountable instrument integrates the signal conditioning electronics of a proximity sensor and an analog transmitter into a single, space-saving housing. It accepts high-frequency inputs from a non-contacting 3300 XL 8mm eddy-current proximity probe and extension cable, processing raw target gap variations into a linear 4 to 20 mA current loop output. This proportional signal routes directly to standard Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC) without requiring a separate rack monitoring system.

This exact configuration features a factory-calibrated full-scale measurement scale of 0-10 mils pp (0-250 um pp), designed for machines with larger expected rotor vibration amplitudes. The unit is equipped with integrated 35 mm DIN rail clips for rapid, toolless snap-on installation into local marshalling junction boxes. The agency option is designated as -00, which represents the standard, non-hazardous area base model for general-purpose plant zones. The specialized factory suffix MOD:165353-01 denotes a controlled engineering modification that provides precise hardware component optimization or specific filter tuning tailored to optimized machinery metrics while maintaining standard physical chassis profiles.

Features

• Two-wire, loop-powered configuration that routes a proportional 4 to 20 mA analog signal directly to host DCS or PLC automation cards.
• Expanded 0-10 mils peak-to-peak (0-250 um peak-to-peak) linear scale calibration for high-amplitude shaft displacement logging.
• Integrated heavy-duty 35 mm DIN rail clips for secure, vibration-resistant installation on standard terminal enclosure tracks.
• Standard-area application footprint (-00 option) engineered for reliable cost-effective deployment in non-classified plant zones.
• Factory modification code MOD:165353-01 for specialized internal filtering stability and target material synchronization.
• Front-mounted, isolated BNC dynamic terminal providing raw, unconditioned voltage waveforms for local diagnostic data collectors.
• Non-interacting zero and span adjustment pots allowing seamless, independent calibration verification under field conditions.

Applications

• Continuous radial shaft vibration monitoring on fluid-filmed bearings of industrial turbo-fans, exhausters, and blowers.
• Standalone asset protection loop integration for large electric motors, industrial gearboxes, and high-capacity centrifugal pumps.
• Distributed machinery condition monitoring inside factory utility rooms, water handling skids, and HVAC cooling towers.

Option String Breakdown

Technical Specifications

Connections/Interfaces

Installation Guidelines

• DIN Rail Attachment: Position the transmitter housing directly over standard 35 mm DIN rail tracking. Apply firm downward pressure until the integrated plastic clips snap tightly over the rail flanges.
• Chassis Frame Isolation: Ensure the internal ground planes remain isolated from bare electrical conduit paths. The transmitter backplate must remain isolated from structural rack frames to eliminate low-voltage ground loops.
• System Length Verification: Verify that the system length option (Option -XX) perfectly matches the combined physical length of the connected 3300 XL 8mm probe and extension cable to maintain proper scaling.
• Dynamic Signal Diagnostic Check: Use the front-facing coaxial BNC connector to patch into local signal analyzers. This buffered port provides a raw voltage wave (200 mV/mil) without altering the primary 4-20 mA control loop tracking.