Description
The 330500-0300 Velomitor Piezo-velocity Sensor is a specialized piezoelectric accelerometer designed to measure absolute casing and structural vibration. This configuration features a 1/4-28 UNF mounting thread (Option 03) and does not include hazardous area agency approvals (Option 00). By incorporating solid-state electronics, the 330500 provides a reliable, non-contact measurement solution that eliminates the mechanical wear and degradation often associated with traditional velocity transducers.
This sensor is used to monitor machine casing, bearing housing, and structural vibration in rotating machinery. The solid-state design allows for flexible installation at any orientation—vertical, horizontal, or angled—without impacting sensor performance. Because the internal electronics are integrated directly into the transducer, it does not require an external signal conditioner for operation, though users should ensure that integration to displacement measurements is managed to avoid amplifying electrical noise.
Features
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Mounting Configuration: 1/4-28 UNF threaded mounting interface (Option 03)
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Agency Approval: Standard configuration without hazardous area certifications (Option 00)
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Measurement Sensitivity: 3.94 mV/mm/s (100 mV/in/s) nominal sensitivity
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Frequency Range: 4.5 Hz to 5 kHz response with ±3.0 dB accuracy
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Robust Design: Hermetically sealed 316L stainless steel housing with 2-pin MIL-C-5015 connector
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Temperature Tolerance: Wide operating range from -55 degC to +121 degC
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Shock Survivability: Rated for up to 5,000 g peak acceleration
Applications
The 330500 Velomitor sensor is used in heavy industrial environments for critical machinery monitoring, including:
- Bearing housing vibration monitoring
- Machine casing vibration analysis
- Structural integrity and vibration measurement
- Rotating machinery protection (unbalance and misalignment detection)
Ordering Information
| Option |
Code on This SKU |
Description |
| Orderable Part Number |
330500-0300 |
330500 Velomitor Piezo-velocity Sensor |
| A - Mounting Thread |
03 |
1/4-28 UNF thread |
| B - Agency Approval |
00 |
Not required (General purpose) |
Technical Specifications
| Manufacturer |
Bently Nevada |
| Part Number |
330500-0300 |
| Sensitivity |
3.94 mV/mm/s (100 mV/in/s) ±5% |
| Frequency Response |
4.5 Hz to 5 kHz (±3.0 dB) |
| Velocity Range |
1270 mm/s (50 in/s) peak |
| Amplitude Linearity |
±2% to 152 mm/s (6 in/s) peak |
| Output Bias Voltage |
-12 ±3.0 VDC |
| Case Material |
316L stainless steel |
| Operating Temperature |
-55 degC to 121 degC |
| Weight |
0.142 kg |
| Connector |
2-pin MIL-C-5015 |