Bently Nevada 86739-01 Dual Vibration Monitor Brand New

Description

The Bently Nevada 86739-01 is a Dual Vibration Monitor designed for continuous online protection of rotating machinery within the 3500 Series platform. The module delivers reliable vibration measurement across two independent channels, ensuring stable machine health evaluation in demanding industrial environments. Moreover, its design supports API 670 compliance, which reinforces confidence in critical protection tasks for high-value assets. The monitor integrates directly into a 3500 rack and works seamlessly with proximity probes or velocity sensors used across modern turbomachinery installations.

Key Features

The 86739-01 provides two fully independent monitoring channels that capture absolute vibration measurements with excellent repeatability. In addition, configurable recorder outputs and buffered signal connections give engineers flexible access to raw and conditioned data. The module responds quickly to abnormal machine behavior, which helps maintenance teams reduce downtime and prevent equipment damage. Its rugged design withstands harsh conditions while maintaining stable accuracy across a wide temperature range.

Technical Specifications

Product Type Dual Vibration Monitor (3500/16 equivalent)

Environmental Ratings • Operating Temperature: 0 to 65°C • Storage Temperature: –40 to 85°C • Relative Humidity: Up to 95%, non-condensing

Electrical & Signal Performance • Power Consumption: 1.5 W nominal • Signal Conditioning Accuracy: ±0.33% of full-scale typical • Recorder Outputs (programmable): – +4 to +20 mA – 0 to –10 VDC – +1 to +5 VDC • Buffered Outputs: – One coaxial connector per channel (front) – One terminal connection per channel (rear)

General Information • Series: Bently Nevada 3500 Machinery Protection System • Measurement Channels: Two independent vibration channels • Compliance: API 670 monitoring requirements

Typical Applications

This module is widely used in gas turbines, steam turbines, compressors, and critical pump sets that demand continuous protection. For instance, many plants deploy the 86739-01 to monitor casing vibration on high-speed equipment, which helps operators detect imbalance or bearing wear early. Furthermore, its dual-channel design supports redundant monitoring strategies that strengthen protection layers in mission-critical environments.

Support & Maintenance

The 86739-01 works reliably when installed within a properly configured 3500 rack, and its long-term performance depends on periodic sensor verification and system calibration. Therefore, users benefit from scheduled maintenance routines that maintain accuracy and compliance with plant safety standards. Replacement modules are readily available, and standard warranties typically cover a 12-month period depending on supplier terms.

​FAQ

Q1: What type of machinery is the 86739-01 best suited for? It performs best on turbines, compressors, and high-value rotating equipment requiring continuous vibration monitoring.

Q2: Does the module meet API 670 requirements? Yes, it supports the monitoring requirements defined by API 670 for machinery protection.

Q3: How many channels does the 86739-01 provide? It provides two fully independent vibration monitoring channels.

Q4: Can engineers access raw vibration signals? Yes, buffered outputs on the front and rear panels provide direct access to sensor signals.

Q5: Is the recorder output configurable? Yes, recorder outputs can be set to current or voltage formats depending on system needs.