The 330500 Velomitor Piezo‑velocity Sensor is a solid‑state accelerometer with a 4.5 Hz‑5 kHz range, 12 kHz resonant frequency, and up to 1 000 ft cable length.
The Bently Nevada 330500 Velomitor Piezo‑velocity Sensor is a solid‑state piezoelectric accelerometer designed for absolute vibration measurement on bearing housings, casings, or structural components. It features integrated electronics, no moving parts, and can be mounted in any orientation.
The datasheet provides detailed specifications, environmental limits, hazardous‑area approvals, ordering options, and accessory part numbers. It also includes dimensional drawings, typical response curves, and compliance information for FCC, EMC, RoHS, and various ATEX/IECEx standards.
| Electrical Sensitivity | 3.94 mV/mm/s (100 mV/in/s) ±5 % |
|---|---|
| Frequency Response | 4.5 Hz to 5 kHz (270 cpm to 300 kcpm) ±3 dB |
| Temperature Sensitivity | -14 % to +7.5 % typical |
| Velocity Range | 1270 mm/s (50 in/s) peak |
| Mounted Resonant Frequency | >12 kHz |
| Output Bias Voltage | -12 V ± 3 VDC |
| Broadband Noise Floor | 0.004 mm/s (160 µin/s) rms |
| Maximum Cable Length | 305 m (1 000 ft) |
| Operating Temperature Range | -55 °C to 121 °C |
| Shock Survivability | 5 000 g peak |
The recommended mounting torque is 32‑46 kg·cm (24‑40 in‑lb) maximum.
The cable can be up to 305 metres (1 000 feet) long without degrading the signal.
The sensor operates from –55 °C to +121 °C.