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The 21504-0000-012-05-02 is an 8mm Proximity Transducer Probe belonging to the 7200 Series. Designed for non-contact condition monitoring of rotating machinery, it accurately measures static displacement and dynamic vibration relative to a metal shaft surface.
Industrial Non-contact Precision
Proven Compatibility & Stability
Superior Harsh Environment Resilience
The Bently Nevada 7200 series 8mm eddy current sensor system is a non-contact gap-to-voltage system designed for highly reliable measurement of static and dynamic distances between the probe tip and the target. It features a 2.0 mm linear range and a sensitivity of 200 mV/mil. This probe is suitable for monitoring radial vibration and axial displacement in rotating machinery and is fully compatible with the Bently 3300 and 3500 systems.In terms of system architecture, this probe is not only the core of the 7200 sensing system, but also boasts excellent platform compatibility. It can be seamlessly connected to the 3300 and 3500 series mechanical protection monitoring racks via a dedicated extension cable, providing preventative maintenance data for critical rotating equipment such as steam turbines, compressors, large water pumps, and motors. This is applicable whether used to monitor bearing wear, rotor imbalance, or as a keyphasor reference signal.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 21504-0000-012-05-02 7200 Series 8mm Proximity Probe Manuals, Datasheets, Drivers, 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.
Oil & Gas
Monitoring shaft orbit to prevent bearing damage caused by surge conditions.
Power Generation
Measuring radial vibration and axial thrust of the main shaft to prevent rotor-to-stator contact.
Steel & Metallurgy
Monitoring bearing vibration of large blowers to avoid unplanned downtime due to imbalance.
Paper & Pulp
Monitoring bearing wear conditions in high-temperature and high-humidity environments.
Cement Industry
Measuring excessive shaft vibration caused by dust accumulation or wear on the impellers.
Nuclear Power
Ensuring highest reliability monitoring for core power components of the cooling system.
When using the 21504-0000-012-05-02 proximity probe, the priority is to precisely calibrate the mounting gap via the Proximitor’s output voltage to ensure it remains within the 80-mil linear range. During installation, strictly adhere to minimum target size and side clearance requirements to prevent cross-talk or sensitivity distortion, while protecting coaxial connectors from oil contamination and excessive cable bending. Due to its electromagnetic nature, ensure the shaft material matches the probe's calibration (typically 4140 steel), and regularly inspect cable insulation to prevent signal interference or nuisance trips caused by environmental wear.
It is a 7200 Series 8mm Proximity Probe manufactured by Bently Nevada.
Which system does 21504-0000-012-05-02 belong to?
It belongs to the 7200 Transducer Series but is fully compatible with 3300 and 3500 monitoring racks.
How to install the 21504-0000-012-05-02?
Thread it into the tapped hole on the machine bearing housing and set the correct gap based on the Proximitor’s voltage output.
What connector does 21504-0000-012-05-02 support?
The "02" at the end indicates it is equipped with a miniature male coaxial connector.
Is the 21504-0000-012-05-02 still in production?
The 7200 series is in its late life cycle and is typically replaced by the 3300 XL 8mm series.
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