Product Overview

The Bently Nevada 990-05-XX-01-00 vibration transmitter, MOD:165335-01, is a loop-powered device used to convert proximity probe vibration signals into a standard 4–20 mA output for integration with PLC and DCS systems. It is typically applied on rotating equipment where continuous vibration indication is required for trending, basic alarms, and condition-based maintenance workflows.

This transmitter is commonly paired with eddy-current proximity probe systems and provides a stable analog signal proportional to vibration amplitude. It is intended for industrial control cabinets and machinery skids where a compact, serviceable transmitter is preferred over rack-based monitoring hardware.

The earlier description referencing Ethernet routing, redundant sensor inputs, and multi-parameter measurements (speed/temperature) does not match the typical function of a 990 series transmitter. The 990-05-XX-01-00 family is primarily used for vibration-to-current conversion; any network communications or higher-level analytics are handled by the host control/monitoring system.

Key Technical Characteristics

• Model / Order Code: 990-05-XX-01-00

• Modification Code: MOD:165335-01

• Product Series: 990 Series

• Device Type: Loop-powered vibration transmitter

• Output Signal: 4–20 mA DC proportional to vibration amplitude

• Typical Loop Supply: 10–30 VDC (2-wire)

• Input Source: Eddy-current proximity probe system (application dependent)

• Signal Conditioning: Filtering and scaling to reduce nuisance trips and stabilize the loop output (configuration dependent)

• Installation: Control panel or skid mounting; field wiring to control system analog input

• Condition: Brand New

• Availability: In Stock

• Origin: USA

• MOQ: 1

Engineering notes

• “XX” indicates a configuration-dependent code segment. Output scaling and compatible probe system details depend on the ordered configuration.

• This device is not an Ethernet router and does not provide Modbus or network communications as a native function.

Operational Use Cases

Typical deployments include:

• Pumps and motors where a 4–20 mA vibration signal is required for continuous trending in the DCS

• Compressors and fans on packaged skids needing a compact transmitter for simple vibration supervision

• Turbines in auxiliary systems where control-room trending is desired without adding a full rack monitor

• Retrofit projects converting existing proximity probe installations into analog current loops for modern control systems

Good practice for commissioning

• Verify the probe system type and calibration match the transmitter’s expected input characteristics

• Perform loop check and scaling validation at the PLC/DCS analog input

• Route signal wiring with appropriate shielding and grounding to minimize EMI effects in high-power environments