330500-00-01 | Bently Nevada | Velomitor Piezo-velocity Sensor

Bently Nevada 330500-00-01 Velomitor Piezo-velocity Sensor

Configured for piezo-velocity signal acquisition in rotating machinery monitoring loops, the Bently Nevada 330500-00-01 (330500-01-00 Velomitor Piezo-velocity Sensor) provides direct physical/electrical execution. It operates as a velocity-output transducer delivering conditioned vibration signals into proximity/TSI monitoring chains.

Hardware Specifications

Eddy-current Probe Scaling and Gap Voltage Validation

Although the Velomitor is a piezo-velocity device rather than an eddy-current probe, Bently Nevada platforms frequently integrate both sensor types within the same monitoring rack. The 330500 series maintains compatibility with standard -10 VDC gap voltage validation practices used in eddy-current channels, ensuring cross-channel consistency when correlating shaft-relative and casing-relative vibration. Internal signal conditioning suppresses cross-talk between adjacent measurement paths, stabilizing rotor dynamics interpretation when multiple sensors are installed on the same machine train.

Frequently Asked Questions

Q: Does the sensor support hot-swap replacement in an energized monitoring rack? A: The sensor itself is passive and can be disconnected or replaced without affecting rack power, but field wiring should be de-energized to avoid transient injection into monitoring modules.

Q: Are there any backplane or module current loading considerations? A: No. The sensor does not draw current from the monitoring rack; it delivers a passive piezoelectric velocity signal through its Mil-C-5015 connector.

Q: How does the sensor behave in redundant monitoring configurations? A: When wired to dual-channel inputs, switching latency is determined by the monitoring module, not the sensor. The sensor provides continuous analog output without internal buffering.

Field Installation Guidelines

• Use shielded twisted-pair cabling with the shield bonded at the monitoring end only to minimize ground-loop interference.
• Maintain mechanical coupling integrity by ensuring the mounting surface is clean, flat, and free of corrosion.
• Route sensor cabling away from high-voltage conduits to reduce induced noise.
• Verify connector engagement on the Mil-C-5015 interface; improper seating can introduce intermittent signal loss.
• Avoid excessive strain on the cable; use proper strain relief at the sensor body.
• Follow standard industrial vibration sensor placement rules: mount firmly to the machine casing, avoiding thin or resonant structures.