330525-05 Bently Nevada Velomitor XA Piezo-velocity Sensor
Technical specifications
Manufacturer: Bently Nevada
Condition：New with Original Package
Product Type: Piezo-velocity Sensors
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
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Product Description
Configured for absolute vibration velocity measurement on rotating machinery housings, the Bently Nevada 330525-05 (330525 Velomitor XA Piezo-velocity Sensor) provides a conditioned velocity output for machine vibration monitoring. The sensor uses a 316L stainless steel case, an integral 1/4-18 NPT mounting thread, and a hermetically sealed 2-pin connector assembly.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330525-05 |
| Base Model | 330525 |
| Brand | Bently Nevada |
| Product Type | Velomitor XA Piezo-velocity Sensor |
| Weight | 156 g typical |
| Dimensions | 28 mm diameter x 73.1 mm height |
| Case Material | 316L stainless steel |
| Mounting Thread | Integral 1/4-18 NPT |
| Connector | 2-pin Mil-C-26482 hermetically sealed connector, 316L stainless steel shell |
| Sensitivity | 3.94 mV/mm/s (100 mV/in/s), +/- 5% |
| Frequency Response | 4.5 to 2,000 Hz, +/- 3.0 dB; 6.0 to 1,000 Hz, +/- 0.9 dB |
| Velocity Range | 1270 mm/s (50 in/s) peak |
| Amplitude Linearity | +/- 2% to 152 mm/s (6 in/s) peak |
| Mounted Resonant Frequency | Greater than 12 kHz |
| Transverse Sensitivity | Less than 5% of sensitivity |
| Broadband Noise Floor | 0.004 mm/s (160 microin/s) rms, 4.5 Hz to 2 kHz, nominal |
| Input Voltage | -22 to -30 VDC |
| Bias Current | 2.5 to 6.0 mA |
| Output Bias Voltage | -12 +/- 3.0 VDC over temperature |
| Maximum Cable Length | Up to 305 m (1,000 ft) with recommended shielded cable |
| Operating Temp | -55 deg C to +121 deg C |
| Shock Survivability | 5000 g peak maximum |
| Relative Humidity | Up to 100% non-submerged |
| Power Consumption | Not specified as a wattage; input requirement is -22 to -30 VDC at 2.5 to 6.0 mA bias current |
Rotor Dynamics and Velocity Measurement
The 330525-05 measures absolute vibration velocity at the machine housing. Its 3.94 mV/mm/s sensitivity converts mechanical velocity into an electrical output for a compatible vibration monitoring input.
The specified frequency response extends from 4.5 Hz to 2,000 Hz at +/- 3.0 dB. A narrower 6.0 Hz to 1,000 Hz range provides the specified +/- 0.9 dB response. The mounted resonant frequency exceeds 12 kHz, keeping the sensor resonance above the stated measurement bands.
The sensor supports a peak velocity range of 1270 mm/s. It maintains +/- 2% amplitude linearity through 152 mm/s peak. Transverse sensitivity remains below 5% of sensitivity, which limits response to vibration perpendicular to the primary sensing axis.
The electrical interface requires -22 to -30 VDC and a 2.5 to 6.0 mA bias current. The output bias voltage is -12 +/- 3.0 VDC over temperature. These values must match the receiving vibration monitoring channel before commissioning.
Frequently Asked Questions
Q: What mounting connection does the 330525-05 use?
A: The sensor has an integral 1/4-18 NPT mounting thread.
Q: What power interface does the sensor require?
A: The supplied specifications require -22 to -30 VDC with a 2.5 to 6.0 mA bias current.
Q: How should the sensor connect to the monitoring system?
A: Use the specified 2-pin Mil-C-26482 connector assembly and recommended shielded cable. The receiving channel must accept the sensor's electrical output and bias requirements.
Field Installation Guidelines
Mount the sensor at a location that mechanically transmits the machine housing vibration to be measured. The mounting surface should provide firm mechanical contact and allow the 1/4-18 NPT connection to seat correctly.
Use the specified mating connector and shielded cable assembly. Route the sensor cable separately from high-current power conductors where practical to reduce electrical interference.
Verify the input voltage, bias-current range, and receiving-channel compatibility before energizing the sensor. Check the output bias voltage after connection when the monitoring system provides an appropriate measurement point.
Keep the hermetically sealed connector assembly correctly mated during operation. Although the supplied data specifies operation at up to 100% relative humidity when non-submerged, installation should prevent direct water immersion.
For long cable runs, remain within the specified maximum length of 305 m when using the recommended shielded cable. Confirm cable termination and shield continuity before placing the vibration channel into service.
Other Attributes
- Series: 3300 System
- Country of Origin: USA
- Lead Time: In Stock, 2 Working Days
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