Weatherproof Bently Nevada 330525-00 Velomitor XA Piezo Velocity Sensor 330525-AA +68 To +86 °F

Bently Nevada 330525-00 Velomitor XA Piezo-velocity Sensor 330525-AA +68 to +86 °F

Product Overview
The Bently Nevada 330525-00 Velomitor® XA (eXtended Application) is a rugged, solid-state piezo-velocity sensor engineered for continuous vibration monitoring on critical rotating and reciprocating machinery. Built from 316 L stainless steel and fitted with a unique weatherproof connector and cable assembly, the 330525-00 can be mounted directly in hostile environments without additional protective enclosures, delivering ±5 % full-scale accuracy and long-term stability from –40 °C to +200 °C.

Key Specifications
• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5 %
• Frequency Response: 4.5 Hz – 2 kHz (270 – 120 000 cpm) ±3 dB
• Measuring Range: ±51 mm/s (±2 in/s) peak
• Output: 2-wire, low-impedance velocity signal (compatible with 4–20 mA loops via external barrier)
• Supply Voltage: 18 – 30 V DC, 2 – 10 mA constant-current drive
• Operating Temperature: –40 °C to +200 °C (–40 °F to +392 °F)
• Construction: 316 L stainless steel housing, IP-65 / NEMA 4X sealed, 1/4-28 UNF mounting stud
• Maximum Cable Length: 305 m (1 000 ft) with standard shielded pair
• Hazardous-Area Approvals: ATEX, IECEx, UL & CSA versions available

Core Advantages
• Weatherproof “XA” design eliminates need for junction boxes, cutting installation cost and time.
• Integrated piezo-accelerometer + on-board integration circuit delivers true velocity output without external modules.
• Wide frequency band captures both low-speed imbalance and high-frequency bearing defects.
• Hermetic sealing resists moisture, dust, and corrosive chemicals offshore and onshore.
• Drop-in replacement for legacy 330500 series; compatible with Bently Nevada 3500/42, 1900/65A, System 1®, and PLC/DCS analog input cards.

Typical Applications
• Centrifugal & reciprocating compressors in oil, gas & petrochemical plants
• Cooling-tower fans, induced-draft blowers, and HVAC chillers
• Steam, gas, and hydro turbines with elevated surface temperatures
• Pumps, gearboxes, motors, crushers, and conveyors in mining & cement
• Marine propulsion and offshore platform rotating equipment

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