Description
The Bently Nevada 330525-01 is a ruggedized Velomitor XA (eXtended Application) Piezo-velocity Sensor. It is engineered to measure absolute casing vibration in critical rotating machinery operating in harsh, moist, or corrosive industrial environments without requiring a separate protective housing.
Commercial and Logistics Status
| Parameter | Value |
| Condition | Factory Sealed / New Surplus (Verify specific unit availability upon inquiry) |
| Availability | Subject to current inventory status |
| Standard Lead Time | 3 to 5 business days for domestic shipments; international freight times vary |
| Warranty | 12 months standard replacement warranty |
| Pricing Note | Price subject to market conditions; contact us for a firm quote |
Technical Specifications
| Parameter | Value |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Product Series | 3300 Series / Velomitor XA System |
| Part Number / Catalog ID | 330525-01 (Includes CSA/NRTL/C hazardous area approvals option -01) |
| Sensor Type | Piezo-velocity Transducer |
| Sensitivity | 3.94 mV/mm/s (100 mV/in/s) \pm 5\% |
| Frequency Response | 4.5 to 2,000 Hz (\pm 3.0 dB); 6.0 to 1,000 Hz (\pm 0.9 dB) |
| Velocity Range | Up to 1270 mm/s (50 in/s) peak |
| Case Material | 316L Stainless Steel |
| Connector Interface | Hermetically sealed, 2-pin weather-proof MIL-C-26482 style connector |
| Operating Temperature | -55^\circC to +121^\circC (-67^\circF to +250^\circF) |
| Environmental Ratings | IP65 and NEMA 4X dust, water, and corrosion protection |
| Hazardous Approvals | CSA/NRTL/C; ATEX / IECEx zone certifications dependent on full system build |
| Weight | 156 g (5.5 oz) |
Engineering and Field Integration Notes
Proper physical mounting and loop wiring practices ensure signal fidelity when integrating the 330525-01 Velomitor XA into vibration monitoring systems (such as Bently Nevada 3500 racks).
Integration Guidelines
- Direct Mounting Surface: Mount the sensor directly onto a flat, spot-faced surface on the machine casing using the appropriate mounting stud to preserve the high-frequency mounted resonant response (exceeding 12 kHz). Do not over-torque beyond manufacturer limits (45 N-m / 33 ft-lb max).
- Weatherproof Cabling: Utilize matching environmental extension cables with sealed connectors to maintain the IP65/NEMA 4X rating in wet or washdown plant environments.
- Shield Grounding: Ensure single-point grounding of the signal cable shield to prevent ground loops and minimize electromagnetic interference (EMI) on low-level velocity output signals.
Frequently Asked Questions
Q: What is the main difference between the standard 330500 Velomitor and the 330525-01 Velomitor XA?
A: The 330525-01 “XA” (Extended Application) version features a heavy-duty 316L stainless steel housing and an upgraded hermetic weatherproof connector assembly, allowing it to be installed directly on outdoor or exposed machinery without requiring an additional protective housing enclosure.
Q: Can the 330525-01 be connected directly to standard monitoring system I/O modules?
A: Yes, it is fully compatible with standard Bently Nevada vibration monitors (such as 3500/42M cards) configured for constant-current diode (IEPE-style) powered velocity transducers, requiring standard -22 to -30 V DC auxiliary power input.
