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The 330104-00-20-10-01-CN is a 3300 XL 8 mm eddy current proximity probe manufactured by Bently Nevada, a Baker Hughes business. It serves as a core sensor in the industrial sector for condition monitoring and asset protection of large rotating machinery.
One 3300 XL 8 mm probe
One 3300 XL extension cable
One 3300 XL Proximitor Sensor
The 3300 XL 8 mm system delivers the most advanced performance in our eddy current proximity transducer systems. The standard 3300 XL 8 mm 5-meter system also fully complies with the American Petroleum Institute’s (API) 670 Standard for mechanical configuration, linear range, accuracy, and temperature stability.
All 3300 XL 8 mm proximity transducer systems provide this level of performance and support complete interchangeability of probes, extension cables, and Proximitor sensors, eliminating the need to match or bench calibrate individual components. Each 3300 XL 8 mm Transducer System component is backward compatible and interchangeable with other non XL 3300 series 5 mm and 8 mm transducer system components. This compatibility includes the 3300 5 mm probe, for applications in which an 8 mm probe is too large for the available mounting space.
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 330104-00-20-10-01-CN 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.
Thermal Power
Measuring axial displacement and radial vibration of the high-pressure turbine cylinder to prevent friction between rotating and stationary parts.
Petrochemical Industry
Used for speed measurement and bearing vibration monitoring on crack gas compressors or propylene compressors.
Iron and Steel Metallurgy Industry
Monitoring the static gap and dynamic vibration of blast furnace blower (TRT) bearings.
Nuclear Power
Used for bearing health tracking on conventional island steam generator units and main feedwater pumps.
Paper & Pulp Industry
Used for shaft centerline measurement of large hydrodynamic bearings in the press section.
Wind Power Industry
Measuring axial thrust changes at the connection between the main shaft and gearbox of direct-drive or doubly-fed wind turbines.
When using the 330104-00-20-10-01-CN probe, for mechanical installation, due to its extended 200 mm case length and fine M10×1 threads, it is critical to ensure the probe is strictly aligned perpendicularly with the mounting hole to prevent binding or cross-threading, while controlling the tightening torque around 5.1 N·m to avoid twisting or breaking the long housing.
For electrical and field protection, you must ensure the armored cable's bend radius is no less than 25.4 mm during routing, and precisely adjust the initial static gap voltage to approximately -10.0 Vdc at the linear center point by monitoring the Proximitor output during mounting. Finally, as this model carries the CN China explosion-proof certification, all field wiring must rigidly comply with national hazardous area installation codes, and the ClickLoc coaxial connector should only be finger-tightened without tools while properly securing the connector protector to prevent oil and moisture ingress.
The system provides an analog negative voltage output signal that is directly proportional to the distance between the probe tip and the observed conductive metal surface to accurately measure both static position and dynamic vibration values, making it widely utilized for primary industrial applications including radial shaft vibration monitoring, precision axial displacement measurement, and Keyphasor phase reference or rotational speed signal collection. Regarding its specific mechanical configuration, this probe features an 8.0 mm tip diameter constructed of highly chemical-resistant and insulated Polyphenylene Sulfide (PPS) plastic paired with an M10×1 metric stainless steel threaded case with 0 mm unthreaded length and an extended 200 mm overall case length specification designed for thick machine casings or deep-bore installations. Furthermore, it integrates an integrated 1.0-meter IP67-rated 75 Ω high-specification coaxial cable wrapped inside a flexible stainless steel armored conduit to resist physical pulling and trampling wear in harsh industrial fields, terminating in a miniature coaxial ClickLoc quick connector with a connector protector. Electrically, it requires a standard -24 Vdc power input supplied via a Proximitor sensor and delivers a 2.0 mm (80 mils) linear measuring range with a standard sensitivity factor of -7.87 V/mm, and since its part number carries the CN suffix, this product is fully certified under China National Explosion-Proof standards for legal and safe installation within hazardous explosive environments such as petroleum, chemical, and coal mining industries.
It is a 3300 XL series 8 mm eddy current proximity probe sensor manufactured by Bently Nevada, which is a non-contact precision displacement sensor with a metric threaded case and stainless steel armor.
How do we use a product like 330104-00-20-10-01-CN in practical large machinery applications?
It is typically rigidly fixed via a threaded hole on the machine or a dedicated mounting bracket. The probe tip points perpendicularly to the measured shaft to continuously monitor radial vibration or axial displacement.
Must the 330104-00-20-10-01-CN be paired with other components to function?
Yes. It cannot work or output standard signals independently. It must be connected in series with a 3300 XL extension cable and a 3300 XL Proximitor Sensor.
What is the basic operating principle of the 330104-00-20-10-01-CN?
It works based on the eddy current effect. The probe tip emits a high-frequency electromagnetic field that induces eddy currents on the nearby metal shaft surface, and micron-level shaft movements change the field energy which is then converted into electrical signals.
What role does the built-in stainless steel armor play on the 330104-00-20-10-01-CN?
The stainless steel armored conduit closely encloses the cable outer layer. It resists heavy trampling and mechanical friction in industrial sites, effectively protecting the internal coaxial cable from physical and mechanical damage.
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