Overview
Manuals
Crucial Lifecycle Notice
How It Works
Features:
- Calibrated to an industry-standard base sensitivity of 10 mV/g
- Accurately tracks machine distress frequencies across a span of 1 Hz to 10 kHz
- Outfitted with a rugged electrical hub supporting standard M12 multi-pin or 2-pin screw terminals depending on final cabinet junction requirements
The 86691-00680-350-10 (the full model number is usually 86691-00680-0350-10-00) is an industrial-grade vibration probe/sensor manufactured by Bently Nevada, Inc. It is primarily used for mechanical condition monitoring and fault prediction in medium to large rotating machinery, such as steam turbines, compressors, fans, pumps, and generators. This sensor accurately captures minute vibration signals generated during equipment operation, helping engineers assess equipment health in real time and prevent sudden shutdowns due to mechanical fatigue or misalignment.
In practical applications, this probe features high-frequency response and wide-range dynamic measurement capabilities. It can output highly linearized electrical signals and transmit data in real time to control systems (such as the Bently Nevada 3500 system) or DCS monitoring platforms. By monitoring axial displacement, radial vibration, and eccentricity, it can achieve key functions such as early wear alarm, imbalance condition identification, and automatic safety protection interlock shutdown.
The 86691-00680-350-10 Bently Nevada Vibration Probe may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 86691-00680-350-10 Vibration Probe INFO(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Please note that the Bently Nevada 86691 series has been officially discontinued by the manufacturer. If you need to replace a faulty or incorrectly calibrated device, you will need to purchase spare parts from a supplier with stock, or upgrade your device to a more modern alternative, such as the Bently Nevada 330400 accelerometer loop.
These vibration probes primarily operate based on the principle of eddy current induction or by incorporating a built-in piezoelectric accelerometer (these extended probes/cables are typically used in conjunction with eddy current systems). As an eddy current probe, its front-end coil generates a high-frequency alternating magnetic field through a high-frequency current.
When the surface of the metal shaft being measured approaches the probe, reverse eddy currents are generated on the metal surface, thereby changing the inductance and impedance of the coil. By converting this gap change (impedance change) caused by mechanical vibration into a proportional voltage signal through a precision circuit, the amplitude and frequency of the rotating machinery vibration can be accurately reproduced.
