Bently Nevada 330500-01-00 Velomitor – Industrial Velocity Sensor for Reliable Machine Vibration Monitoring

The Bently Nevada 330500-01-00 is part of the Velomitor family—an IEPE-powered velocity sensor designed for continuous monitoring of rotating assets. From my experience, this model is a straightforward drop-in on pumps, fans, motors, and gearboxes where you need stable velocity trends without babying the installation. It’s typically chosen when you want robust case-mounted velocity measurements feeding a 3500 rack, distributed transmitters, or portable data collectors during routes.

Key Features

• IEPE-powered velocity sensing – Uses constant-current excitation, making it easy to integrate with standard condition monitoring inputs.
• 100 mV/in/s sensitivity (typical) – Delivers the industry-standard output for trending overall vibration and spectrum analysis.
• Wide frequency response – Typically suitable for 4.5 Hz to 5 kHz, covering most rotating machine fault bands.
• Rugged stainless-steel housing – Built for harsh plant environments, with stable performance and good EMI immunity.
• 2‑wire analog output – Simple wiring to Bently Nevada 3500/SCOUT and most third-party monitors or transmitters.
• Stud-mount installation – Common 1/4‑28 UNF mounting stud for reliable case-coupling on pumps, motors, and gearboxes.
• Broad system compatibility – Typically works with IEPE/CC (constant-current) inputs at 18–30 Vdc.

Technical Specifications

Application Fields

You’ll typically see the 330500-01-00 on:

• Pumps and fans (case-mounted velocity trending for imbalance, misalignment, looseness)
• Motors and compressors (overall vibration alarms tied to machine protection systems)
• Gearboxes and blowers (broadband velocity for early fault detection in daily operations)
• Power generation and oil & gas skids (robust IEPE wiring and simple integration)
• Pulp & paper, mining, and metals (harsh environments where rugged sensors pay off)

A maintenance lead told us, “We swapped a few aging velocity pickups for 330500 units and the noise floor dropped. Trending became steadier, which helped tighten alarm bands.”

Advantages & Value

• Reliability that reduces nuisance alarms – Stable bias and sensitivity in most plant conditions.
• Compatibility that lowers engineering effort – IEPE standard wiring to existing monitors and transmitters.
• Procurement simplicity – A widely used series, so spares and replacements are straightforward.
• Lifecycle savings – Durable build and predictable calibration intervals keep ownership costs in check.
• Technical support – We can help confirm suffix options against your monitor card and cable style.

Installation & Maintenance

• Mounting surface – Machine case should be flat, clean, and rigid; use the specified stud and torque.
• Wiring – Use shielded IEPE cable; route away from high-voltage lines; maintain proper strain relief.
• Grounding – Ensure a consistent ground scheme to avoid common-mode noise and ground loops.
• Environmental – Place junction boxes away from heat and splash; maintain connector seals.
• Setup – Verify monitor channel power (2–10 mA constant current) and scale factor (100 mV/in/s).
• Maintenance – Function check during outages; verify sensitivity on a portable shaker annually or biannually, depending on criticality.

Quality & Certifications

• Manufacturer quality programs aligned with ISO-based processes
• CE marking and RoHS conformity for most variants
• Hazardous area approvals (e.g., ATEX/IECEx/CSA) available on specific suffix codes; the exact 330500‑01‑00 configuration should be verified against your site requirements
• Warranty: 12 months from delivery

If you’re standardizing on velocity for protection or trending, the 330500‑01‑00 seems to be a safe, low‑friction choice. You might notice the biggest gains when replacing mixed legacy sensors and normalizing sensitivity across routes. If you’d like, share your monitor model and channel settings—we can confirm compatibility and the best cabling approach before you place the order.