Description
Overview
The Bently Nevada 330500‑07‑04 Velomitor sensor is a piezo‑velocity transducer designed to measure machine casing vibration with high accuracy and long‑term stability. Its compact form factor and rugged construction make it suitable for continuous monitoring of rotating equipment in demanding industrial environments.
Performance Characteristics
This sensor provides a calibrated sensitivity of 3.94 mV/mm/s (100 mV/in/s) with a ±5% tolerance, enabling precise velocity measurements across a wide operating range. The device supports peak vibration levels up to 1270 mm/s (50 in/s), allowing it to capture both low‑frequency and high‑energy vibration signatures.
The 330500‑07‑04 operates with an output bias of −12 VDC ±3 VDC and maintains a dynamic output impedance below 2400 ohms, ensuring compatibility with standard Bently Nevada monitoring platforms and third‑party systems that accept piezo‑velocity inputs.
Technical Specifications
| Parameter |
Specification |
| Model |
330500‑07‑04 |
| Sensor Type |
Velomitor Piezo‑Velocity Sensor |
| Sensitivity |
3.94 mV/mm/s (100 mV/in/s) ±5% |
| Maximum Velocity |
1270 mm/s (50 in/s) peak |
| Output Bias Voltage |
−12 VDC ±3 VDC |
| Certifications |
CSA, ATEX |
| Weight |
0.16 kg |
| Dimensions |
2.5 × 2.5 × 7.2 cm |
| HS Code |
8537101190 |
| Origin |
USA |
| Minimum Order |
1 unit |
| System Compatibility |
TSI and Bently Nevada monitoring systems |
| Product Status |
Active |
Design Features
The sensor incorporates SpringLoc terminals, enabling tool‑free wiring and eliminating the risk of loose screw‑type connections. This design improves installation reliability and reduces maintenance time. Its sealed housing and robust internal construction allow the sensor to withstand harsh operating conditions, including elevated temperatures and mechanical shock.
Application Scenarios
-
Vibration monitoring on pumps, compressors, motors, and fans
-
Machinery protection systems requiring velocity‑based measurements
-
Installations with limited mounting space
-
Facilities requiring certified sensors for hazardous areas
FAQ
Q: What type of vibration does the 330500‑07‑04 measure? A: It measures casing vibration velocity, making it suitable for general‑purpose machinery monitoring.
Q: Can this sensor be used with non‑Bently Nevada systems? A: Yes. As long as the monitoring system accepts piezo‑velocity inputs with similar electrical characteristics.
Q: Does the sensor require periodic recalibration? A: Under normal operating conditions, recalibration is not required due to the stability of the piezoelectric sensing element.
