Configured for vibration velocity measurement in Bently Nevada machinery monitoring systems, the Bently Nevada 330500-00-00 (330500 Velomitor Piezo-velocity Sensor) provides direct electrical conversion of mechanical vibration into a proportional velocity signal for condition monitoring and rotating equipment diagnostics.
Suffix Breakdown & Model Matrix
The provided documentation identifies 330500-00-00 as a single catalog number. No official suffix allocation or option matrix is specified in the available technical data.
Hardware Specifications
Parameter
Specification
Model
330500-00-00
Brand
Bently Nevada
Product Type
Velomitor Piezo-velocity Sensor
Origin
USA
Place of Shipment
Xiamen, China
Manufacturer
Bently Nevada
Weight
0.16 kg
Dimensions
2.5 x 2.5 x 7.2 cm
Operating Temp
-55 deg C to 121 deg C
Relative Humidity
Up to 100 %, non-submerged, hermetically sealed case
Shock Survivability
5,000 g peak maximum
Sensitivity
3.94 mV/mm/s (100 mV/in/s), +/- 5 %
Velocity Range
1270 mm/s (50 in/s) peak
Amplitude Linearity
+/- 2 % to 152 mm/s (6 in/s) peak
Transverse Sensitivity
Less than 5 % of sensitivity
Base Strain Sensitivity
0.005 in/s/mstrain
Output Bias Voltage
-12 +/- 3.0 VDC referenced to Pin A
Dynamic Output Impedance
Less than 2400 ohm
Grounding
Case isolated
Power Consumption
Not specified
Rotor Dynamics Signal Integrity
Within Bently Nevada machinery monitoring systems, vibration channels are evaluated together with shaft displacement and phase reference measurements to support rotor dynamic analysis. The piezo-velocity sensor is intended to provide vibration velocity information while maintaining electrical isolation through its case construction. Signal cable routing should minimize parallel runs with high-energy conductors to reduce induced noise and channel cross-talk during dynamic measurement.
Frequently Asked Questions
Q: Does the sensor housing require electrical grounding? A: The case is specified as electrically isolated. Shield termination and grounding should follow the monitoring system installation requirements rather than using the sensor housing as the signal ground.
Q: Is the sensor designed for operation in high-humidity environments? A: Yes. The enclosure is specified as hermetically sealed and suitable for relative humidity up to 100 % under non-submerged conditions.
Q: Can the sensor be replaced while the monitoring channel is energized? A: The supplied specifications do not state hot-swap capability. Follow plant lockout procedures and the monitoring system maintenance instructions before disconnecting or reconnecting field wiring.
Field Installation Guidelines
Mount the sensor on a clean, rigid machine surface to maintain consistent mechanical coupling.
Route signal cables separately from motor power and variable frequency drive cables to reduce electromagnetic interference.
Use shielded instrumentation cable and terminate the cable shield according to the monitoring system grounding practice.
Verify connector integrity and cable strain relief before commissioning.
Confirm output bias voltage and vibration signal quality using the associated monitoring hardware after installation.
Inspect mounting hardware periodically to ensure that vibration transmission characteristics remain unchanged during operation.
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