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The 330500-00-00 is a Velomitor piezo-velocity sensor manufactured by Bently Nevada in the USA. This component functions in machinery monitoring to track the absolute vibration of bearing housings, casings, or structures in rotating machinery, including steam turbines, fans, and pumps.
Enclosed in a 316L stainless steel housing
Features an ultra-low broadband noise floor of 0.004 mm/s
Immune to gravity effects, supporting directional installation at vertical, horizontal, or any tilted angles
Bently Nevada Velomitor Piezo-velocity Sensors are designed to measure absolute (relative to free space) bearing housing, casing, or structural vibration. The 330500 is a specialized piezoelectric accelerometer that incorporates embedded integrated electronics in a solid-state design. Because the 330500 incorporates solid-state electronics and has no moving parts, it does not suffer from mechanical degradation and wear, and can be mounted vertically, horizontally, or at any other angle of orientation.
The electrical configuration of the 330500-00-00 delivers a calibrated scale factor (sensitivity) of 3.94 mV/mm/s (100 mV/in/s) ±5% at a standard calibration baseline of 100 Hz. The internal solid-state infrastructure processes absolute vibration across a broad frequency response tracking spectrum, maintaining a tight velocity deviation threshold within 4.5 Hz to 2.0 kHz (±3.0 dB) and a premium accuracy band within 10 Hz to 1.0 kHz (±0.9 dB). For secure physical installation, this version provides a standardized 3/8-24 UNF integrated internal female mounting thread (-00) with zero hazardous area approvals (-00), making it ideal for unclassified, standard industrial production areas.
Structurally, the electronic assembly is encapsulated inside a hermetically sealed 316L stainless steel enclosure with a top-exit 2-pin Mil-C-5015 electrical receptacle, achieving an IP66 environmental protection rating. This ensures continuous, non-degrading signal routing through twin-conductor shielded cables to centralized Bently Nevada 3500/42M or 3500/45 monitoring monitors, resisting prolonged exposure to moisture, oil vapor, and high-vibration industrial machinery housing conditions.
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 330500-00-00 Velomitor Piezo-velocity Sensor 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 Generation Industry
Measures the absolute vibration velocity of bearing housings on steam turbine-generator sets.
Hydroelectric Power Generation Industry
Monitors the absolute motion status of hydro-turbine auxiliary pump sets and stator support rigid components.
Oil and Gas Extraction Industry
Monitors mechanical operating looseness on the casings of water injection pumps and crude oil export pumps on offshore drilling platforms and land wellheads.
Petrochemical and Refining Industry
Extracts absolute vibration characteristics on the rigid surfaces of bearing housings in large high-speed centrifugal compressors and main motors.
Iron and Steel Metallurgy Industry
Performs bearing uneven wear monitoring for blast furnace main blowers, converter dedusting fans, and heavy-duty gearbox casings.
Mining and Mineral Processing Industry
Diagnoses mechanical looseness and unbalance on large ball mill and single-stage crusher drive support rigid frames, as well as main exhaust fan bases.
When using the 330500-00-00 sensor, ensure the mounting surface is perfectly flat and tightened to the specified torque. This practice guarantees a proper frequency response. Since this base model lacks regulatory approvals like Ex-ratings, it must not be used in hazardous or explosive areas. Wiring should utilize Bently Nevada shielded cables and run clear of high-voltage lines to prevent EMI. Lastly, ensure the operating temperature does not exceed 121°C and avoid any direct impact on the sensor housing during installation.
Bently Nevada 330500-00-00 piezo-velocity sensor (Velomitor) with base M12×1.0 thread and no agency approvals. Delivers 3.94 mV/mm/s output via internal active integration circuits across 4.5 Hz–5 kHz. Encased in 316L stainless steel with a 2-pin Mil-C-5015 connector for casing vibration monitoring at -55 to +121 °C.
The 330500-00-00 is a piezo-velocity sensor (Velomitor) integrated with internal electronics manufactured by Bently Nevada.
How to use products like the 330500-00-00?
Fix it directly onto the machine bearing housing or casing via its base thread, and connect the millivolt-level velocity signal to monitoring modules like the 3500 system using a 2-pin cable.
What is the standard nominal measuring sensitivity of the 330500-00-00?
The nominal electrical output sensitivity of this transducer is 3.94 mV/mm/s (100 mV/in/s) ±5%.
What specification is the physical electrical connector on the 330500-00-00?
Its top electrical interface utilizes a 2-pin Mil-C-5015 standard stainless steel self-locking receptacle.
Does the internal system of the 330500-00-00 require an external power supply?
Yes, because it integrates internal active electronic amplification and integration circuits, it requires a constant current source from the external monitoring module to operate.
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