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The 330500-02-00 is an industrial Velomitor Piezo-velocity Sensor used to measure absolute casing, housing, or structural vibration. Instead of using moving-coil velocity transducers that are subject to mechanical wear and degradation, this sensor combines a solid-state piezoelectric accelerometer with internal charge-amplifier electronics to output a velocity signal. It is used for predictive maintenance and real-time machinery protection on rotating machinery.
Uses an internal electronic integrator instead of moving coils to eliminate mechanical wear under continuous vibration
Electron-beam welded 316L stainless steel enclosure prevents oil or moisture penetration and shields against RFI/EMI
Operates from 4.5 Hz to 5.0 kHz to detect both low-frequency unbalance and high-frequency bearing faults
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 330500 series delivers industry-leading accuracy by integrating an accelerometer and an electronic integrator inside a single, ruggedized housing. This unique design eliminates the moving parts found in conventional mechanical velocity sensors, resulting in near-zero friction wear and an exponentially longer service lifespan. It provides an output voltage that is directly proportional to the machine’s vibration velocity, feeding clean data into monitoring systems like the Bently Nevada 3500 series or standard industrial PLC/DCS networks without requiring external signal conversion modules.
Crafted from premium-grade 316L stainless steel, the 330500-02-00 housing is fully hermetically sealed using advanced electron-beam welding techniques. This heavy-duty enclosure ensures total immunity against moisture, dust, chemical vapors, and oil penetration. It also features superior electrical isolation and extreme resistance to Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI), guaranteeing high-signal integrity even when installed adjacent to massive high-voltage electric motors or variable frequency drives (VFDs).
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 330500-02-00 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.
Power Generation Industry
Measures absolute casing vibration of gas and steam turbines to assess internal rotor unbalance or mechanical looseness.
Coal Chemical Industry
Monitors frame and housing vibration of reciprocating compressors and gasifier auxiliary motors to prevent bolt looseness from heavy shock loads.
Steel & Metallurgical Industry
Measures casing vibration velocity of blast furnace blowers and hot rolling mill exhaust fans to capture high-frequency blade faults.
Hydropower Industry
Installed on the upper or lower guide bearing housings of hydro-generator units to monitor structural horizontal and vertical absolute vibration.
Pulp & Paper Industry
Continuously measures vibration velocity of paper machine dryer gearboxes and wire section roller bearing blocks under high humidity and temperature.
Petrochemical & Refining Industry
Monitors casing vibration of centrifugal process pumps and heavy-duty pipeline pumps to evaluate rolling-element bearing degradation.
The 330500-02-00 requires special attention during use as it is a piezoelectric velocity sensor with embedded solid-state electronics; although it supports installation at any orientation angle, the thread tightening torque must strictly not exceed 4.5 N·m during field mounting to prevent compressive damage to internal circuits.
Its top features a 2-pin Mil-C-5015 stainless steel receptacle, requiring a properly positioned sealing gasket when mating with the shielded cable to maintain the IP66 rated dust-tight and water-resistant hermetic seal, safeguarding sensitivity stability across a wide temperature spectrum from minus 54 degrees Celsius to 121 degrees Celsius.
Additionally, since the suffix code 00 indicates that hazardous area approvals are not required, it is strictly forbidden to expose this component directly to flammable and explosive industrial sites without utilizing explosion-proof isolation or intrinsic safety barriers.
The Bently Nevada 330500-02-00 is a piezo-velocity sensor featuring a 1/4-18 NPT stud and no agency approvals. It uses an internal solid-state circuit to output velocity directly, delivering a 3.94 mV/mm/s sensitivity across a 4.5 Hz to 5.0 kHz frequency range for absolute casing vibration monitoring on rotating machinery.
What is the primary function of the 330500-02-00 sensor?
It measures vibration velocity in machinery, helping detect imbalances, misalignments, or mechanical wear before they cause critical failures.
What are the structural features of the 330500-02-00?
It incorporates a solid-state electronic design with no moving parts, ensuring it does not suffer from physical wear or mechanical degradation.
At what angle can the 330500-02-00 be mounted on the machinery surface?
Due to its solid-state construction, it can be mounted vertically, horizontally, or at any other angle of orientation into a threaded blind hole.
What is the electrical interface type of the 330500-02-00?
It features a standard top-mounted 2-pin Mil-C-5015 stainless steel hermetically sealed receptacle.
How does the amplitude linearity of the 330500-02-00 perform?
Its amplitude linearity is sustained within ±2% to full scale.
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