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The 330701-00-30-10-01-00 is a high-performance 3300 XL series 11 mm non-contact eddy current proximity probe configured with a 3/8-24 threaded case (3.0-inch overall length), a 1.0-meter integrated cable shielded by heavy-duty stainless steel fluid-resistant armor, and full international hazardous area approvals.
Tachometer and zero speed measurements
Phase reference (Keyphasor) signals
Rod position or rod drop measurements on reciprocating compressors
As part of the 3300 XL 11 mm Transducer System, it is designed to replace the legacy 7200-series 11 mm and 14 mm systems, offering an extended 4.0 mm (160 mils) linear range with a standard sensitivity of 3.94 V/mm (100 mV/mil). All components feature gold-plated brass ClickLoc connectors that lock firmly into place to prevent signal loosening under high vibration. The probe tip and body are structurally bonded using the patented TipLoc molding method, while the cable attachment utilizes the patented CableLoc design to deliver 330 N (75 lb) of pull strength.
This rugged, line-replaceable unit (LRU) comes standard with a locknut featuring pre-drilled safety wire holes, making it an ideal choice for steady non-contact tracking on boiler feed pumps, massive fans, and turbine shafts under harsh, humid, or corrosive plant environments. As a critical sensor node, it captures raw dynamic waveforms and static gap voltages without zero-drift, feeding pristine asset health metrics directly into upper-level diagnostics platforms. By reliably monitoring micro-level shaft movement, it enables engineering teams to execute precise predictive maintenance, effectively diagnosing early-stage bearing wear or rotor unbalance before costly catastrophic machinery trips occur.
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 330701-00-30-10-01-00 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.
Petrochemical & Refining
Used in large-scale hydrocracking and fluid catalytic cracking (FCC) blowers and reciprocating compressors within refineries. Utilizing the wide range of the 11 mm probe to monitor large displacement motions and provide predictive maintenance signals for machinery health.
Thermal Power Plants
Used in 300MW to 1000MW ultra-supercritical steam turbine generator units. It monitors differential expansion (relative thermal growth between casing and rotor) during high-pressure, heavy-load startups to ensure a safe clearance between rotating and stationary parts.
Nuclear Power Plants
Configured on main feedwater pumps and high-pressure safety injection pumps in nuclear and conventional islands. It performs long-term online monitoring of pump shaft eccentricity and position, offering continuous protection for nuclear rotating machinery.
Nuclear Power Plants
Applied to main feedwater pump steam turbines and main generator units in nuclear power plants. It provides redundant overspeed voting logic (e.g., 2-out-of-3) to ensure the absolute safety of mechanical equipment in primary and secondary loops.
Hydroelectric Power Generation
Used for thrust bearings of large hydro-generator units. It monitors the axial displacement and journal tilting of giant vertical or horizontal hydro-turbines when subjected to unbalanced hydraulic impacts.
First, the Proximitor sensor must be calibrated strictly according to the 11 mm system standards (typically 3.94 V/mm or 100 mV/mil) and the initial installation gap must be precisely adjusted (usually at the linear midpoint) to prevent measurement dead zones from exceeding the range.
Second, ensure adequate metal clearance around the probe tip during installation to prevent electromagnetic field cross-interference or signal distortion caused by surrounding metallic objects.
Lastly, during wiring, guarantee that the cable connector protectors are locked tightly and single-ended shield grounding is strictly implemented to eliminate field high-frequency electromagnetic interference and prevent moisture or oil ingress.
The 330701-00-30-10-01-00 proximity probe features stainless steel fluid-resistant armor shielding the internal line and premium insulation blocking EMI and chemical attack, delivering steady non-contact tracking for boiler feed pumps, massive fans, and turbine shafts under high-stress factory conditions.
What kind of product is the Bently Nevada 330701-00-30-10-01-00?
This is an 11mm non-contact eddy current proximity probe (sensor) from the 3300 XL series, primarily used for precision monitoring of shaft vibration, axial displacement, eccentricity, and speed on large rotating machinery.
What is the linear measurement range of the 330701-00-30-10-01-00?
With an 11mm tip diameter, this probe delivers an extended linear measurement range of 4.0 mm (160 mils), which is approximately twice the range of a standard 8mm probe (2.0 mm).
How do you properly use and install the 330701-00-30-10-01-00 probe?
Screw the probe via its 3/8-24 threads into the machine's mounting bracket, directly facing the target metal shaft surface. Use a voltmeter to adjust the mounting gap until the specified initial gap voltage (typically -10 Vdc) is reached, then secure it with a locknut.
On which specific critical equipment is the 330701-00-30-10-01-00 installed?
It is primarily installed on the bearing housings of power plant steam turbines, gas turbines, hydro-generators, boiler feed pumps, massive centrifugal compressors, large high-pressure fans, and industrial gearboxes.
What are the benefits of the integrated stainless steel armor on the 330701-00-30-10-01-00?
The armored conduit effectively protects the internal coaxial cable from erosion by machine lube oil, high-pressure steam, and corrosive chemicals, while preventing mechanical pulling, cutting, or abrasion during complex field routing.
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