Description
Bently Nevada 330500-02-00 | Velomitor Piezo-velocity Sensor Core Category
Dynamic Product Introduction
Monitoring absolute bearing housing vibration on massive industrial turbines and compressors often exposes traditional moving-coil sensors to mechanical wear, calibration drift, and failure under heavy plant conditions. The Bently Nevada 330500-02-00 Velomitor sensor eliminates these vulnerabilities by integrating advanced solid-state piezoelectric technology with internal signal processing.
Outperforming legacy velocity transducers through its completely move-free design, this sensor maintains high accuracy regardless of mounting orientation. Reliability engineers rely on its robust 316L stainless steel housing and broad frequency response to secure continuous, drift-free machinery protection data across severe industrial environments.
330500-02-00
Key Technical Specifications
| Core Parameter | Technical Specification |
| Product Identifier | 330500-02-00 (Velomitor Piezo-velocity Sensor) |
| Sensitivity | 3.94 V/mm/s (100 mV/in/s) \pm 5\% |
| Frequency Response | 4.5 Hz to 5 kHz (\pm 3.0 dB) |
| Velocity Range | Up to 1270 mm/s (50 in/s) peak |
| Mounting Option (-02) | M8 x 1 mounting thread adapter |
| Agency Approvals (-00) | Standard factory baseline approvals (non-hazardous / general location) |
| Housing Material | 316L stainless steel, hermetically sealed |
| Operating Temperature | -55^\circC to +121^\circC (-67^\circF to +250^\circF) |
| Connector Interface | 2-pin MIL-C-5015 hermetically sealed stainless steel shell |
Global Sourcing & Live-Test SOP (Transparency Core)
Deploying replacement velocity sensors into safety-critical protection systems requires rigorous verification protocols to ensure structural and electrical integrity:
- Inbound Verification: Incoming sensor lots undergo microscopic inspection of the MIL-C-5015 hermetic connector pins, laser-etched serial data, and stainless steel casing finish.
- Live Simulation: Sensors are mounted onto a calibrated electrodynamic shaker table driven by precision frequency controllers.
- Diagnostics: Technicians execute swept-sine frequency tests across the operational band, verifying millivolt-per-inch-per-second scale factor linearity, bias voltage stability (-12 VDC nominal), and noise floor limits over a 24-hour thermal soak.
- Final Prep: Connector pins are capped with moisture-resistant seals, and the sensor is packed in anti-static, heavy-gauge barrier material.
The Field Engineer’s Pitfall Guide
❗ Improper Stud Torque and Mounting Resonance: Over-torquing or under-torquing the M8 mounting stud can distort the sensor base or lower the mounted resonant frequency, introducing high-frequency measurement distortion. (I’ve seen plant techs chase false high-vibration spikes simply because a sensor was hand-tightened onto an ungrounded or uneven pad.)
❗ Integration to Displacement Errors: Attempting to integrate the Velomitor’s velocity output down to displacement via external monitor settings can amplify low-frequency electrical noise, corrupting the true shaft vibration picture.
❗ Shielding and Ground Loop Induction: Failing to isolate the signal cable shield at the monitoring rack or allowing the braid to touch machine casing grounds can inject 50/60 Hz electrical hum into the loop.
Intent-Driven FAQ
Can the Bently Nevada 330500 be mounted in any physical orientation?Yes, because it utilizes a solid-state piezoelectric design with no moving parts, it suffers no mechanical wear and can be mounted vertically, horizontally, or at any angle.
What do the suffix digits (-02-00) represent in this part number?The “-02” designator specifies the M8 x 1 mounting thread option, while “-00” denotes standard baseline agency approvals.
Are these sensors supplied factory-sealed or as surplus stock? Inventory batches feature a mix of verified factory-sealed surplus (unused) and fully bench-tested secondary stock, with complete calibration provenance documented on every order.
Does this sensor require an external power supply or monitor interface? Yes, it requires a constant-current negative DC power source (typically supplied by a Bently Nevada monitor rack or signal conditioner) operating between -17 and -26 VDC.
