Bently Nevada 990-10-XX-01-05 MOD: 163930-01 Vibration Transmitter

Description

The 990-10-XX-01-05 MOD: 163930-01 is a loop-powered 2-wire vibration transmitter engineered to process raw signals from proximity probe systems and output a proportional 4-20 mA analog current loop directly to control architectures. This integration eliminates the need for separate proximitor sensors and centralized monitor racks, allowing for a simplified machinery protection interface on compact rotating assets. The device monitors peak-to-peak casing or shaft vibration to safeguard original equipment manufacturer (OEM) packages against mechanical faults. Optimized for confined physical spaces, the system utilizes specialized narrow-profile transducers to deliver reliable dynamic measurements. The MOD: 163930-01 designation indicates a specific factory modification tailored to adjust internal circuit gain, tune frequency response curves, or match the input impedance requirements of targeted industrial control loops.

Features

• Integrated proximitor and transmitter functionality within a single potted enclosure.
• Directly outputs a 4-20 mA DC signal proportional to overall vibration displacement.
• Dedicated non-isolated dynamic signal terminals (PROX OUT and COM) for field analysis.
• Not OK / Signal Defeat circuitry to prevent erroneous control system trips during sensor faults.
• Fully encapsulated electronics providing resistance to 100% condensing humidity.

Applications

• OEM centrifugal air compressor protection packages.
• Small industrial pump vibration monitoring.
• Electric motor shaft displacement tracking.
• Industrial cooling fan and blower machinery protection loops.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• DIN Rail Mounting: Securely latch the integrated mounting clip onto a standard 35 mm DIN rail inside a dust-tight enclosure.
• Shielding and Noise Suppression: Connect the cable shield wires to the instrument ground at the PLC/DCS cabinet only. Maintain shield continuity through any intermediate junction boxes without grounding the shield locally at the transmitter.
• Transducer Gap Adjustment: Follow standard engineering procedures to adjust the initial mechanical gap of the 3300 NSv probe using the dynamic voltage output from the PROX OUT terminal prior to finalizing installation.
• Conduit and Cable Routing: Separate field wiring from high-power electrical cabling to mitigate electromagnetic interference that can distort the low-level transmitter inputs.

Compliance and Certifications

• CSA Division 2
• ATEX Zone 0 / Zone 2
• ABS Marine Type Approval