The Bently Nevada 990-16-XX-01-CN (106M1675-01) is a 2-wire vibration transmitter that converts proximity probe signals into a 4-20 mA output for direct PLC/DCS integration.
The Bently Nevada 990-16-XX-01-CN, also identified by part number 106M1675-01, functions as a high-performance vibration transmitter designed to integrate seamlessly with Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS). This 2-wire device simplifies machinery monitoring by converting proximity probe signals directly into a standard 4-20 mA loop current. By eliminating the need for a separate monitor rack for basic protection, the 990-16 transmitter provides a cost-effective solution for monitoring radial vibration or axial position on less critical “balance-of-plant” assets.
Engineers developed the 990 series to provide professional-grade protection in a compact, DIN-rail mountable form factor. The transmitter receives input from a 3300 XL 8mm proximity probe and extension cable, then processes that signal to output a current proportional to the vibration level. Furthermore, this specific “CN” variant indicates compliance with regional Chinese industrial standards, ensuring the hardware meets local safety and performance requirements. The unit also features a “NOT OK” signal via the current loop to alert operators of transducer failure or wiring faults.
This transmitter actively facilitates predictive maintenance by delivering real-time vibration data directly to a plant’s primary control interface. Consequently, maintenance teams can track trends and set alarm thresholds within their existing PLC environment, identifying mechanical issues like rotor imbalance or bearing wear before they cause equipment damage. Because it utilizes a 2-wire current loop, it significantly reduces installation costs and wiring complexity compared to traditional 4-wire monitoring systems.
Primary industrial applications include:
To ensure long-term reliability in harsh plant conditions, Bently Nevada utilizes high-performance materials that resist chemical exposure and moisture. The 106M1675-01 provides exceptional electrical isolation and effectively rejects electromagnetic interference (EMI), which is critical for maintaining signal accuracy near high-voltage industrial equipment. Additionally, the transmitter includes buffered output terminals, allowing technicians to connect portable diagnostic tools for advanced vibration analysis without interrupting the primary 4-20 mA protection loop.
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