Description
Bently 330500‑9571‑12
Technical Specifications: Sensor Type: Piezo‑integrated Velomitor Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5 % Frequency Response: 4.5 Hz ~ 5 kHz (±3 dB) Integrated Cable Length: 12 m Operating Temperature Range: ‑51 °C ~ +121 °C Housing Material: 316L stainless‑steel Net Weight: 320 g Output Interface: Two‑conductor shielded cable assembly
Functional Features: Solid‑state electronic‑structure without internal moving‑parts, no mechanical‑wear during long‑term operation. Hermetically‑sealed stainless‑steel housing adapts to humid, oily and dusty industrial‑site environment. Output signal is proportional to casing vibration velocity, directly compatible with Bently Nevada monitoring‑modules. Supports long‑distance cable‑transmission up to hundreds‑of‑meters without obvious‑signal‑degradation. Sensor mounting‑orientation has no restriction, can install vertically, horizontally or at any inclination‑angle.
Application Scenarios: Absolute‑vibration monitoring for bearing‑housings, equipment‑casings and support‑structures of fans, blowers, pumps, gear‑boxes and turbo‑machinery. Applied in thermal‑power plants, petrochemical‑plants and metallurgical‑factories for rolling‑element‑bearing machinery condition‑monitoring.
Performance Parameters: Base‑strain‑sensitivity: 0.005 in/s per micro‑strain Magnetic‑field‑susceptibility: Less than 0.05 mm/s per mT Maximum‑surge‑shock: 1000 g peak Maximum‑operating‑relative‑humidity: 100 % non‑submerged, hermetic‑sealed housing Insulation‑resistance: ≥100 MΩ @500 V DC
Material Composition: Sensor Housing: 316L stainless‑steel Internal Sensing‑element: Piezo‑ceramic crystal Internal Circuit‑substrate: High‑temperature‑resistant printed‑circuit‑board Signal‑cable Insulation: FEP fluoropolymer Cable Shield‑layer: Tinned‑copper braided‑shield
Structural Features: Cylindrical hermetically‑welded stainless‑steel sensor housing. Piezo‑ceramic sensing‑element and integral signal‑conditioning circuit sealed inside housing cavity. 12‑meter two‑conductor shielded‑cable extends from sensor rear‑end, no intermediate‑splice‑points. Thread‑mount base‑surface for direct‑bolt‑installation onto machine‑casing.
Working Principle: Machine‑casing vibration transmits mechanical‑acceleration to internal piezo‑ceramic element. Piezo‑element generates charge‑signal proportional to acceleration. Built‑in integrating‑electronics convert acceleration‑signal into velocity‑proportional analog‑voltage output, transmitted via shielded‑cable to machinery‑monitor module.
Installation Requirements: Mount sensor directly onto rigid machine‑casing surface with proper‑torque bolt‑fastening; avoid thin‑plate flexible‑mounting‑surfaces. Keep mounting‑surface flat and clean. Route sensor‑cable separately from high‑voltage‑power‑cables. Reserve cable‑slack for machine‑vibration‑displacement. Fix cable‑segments with cable‑clamps; cable‑body shall not bear sensor‑weight. Apply single‑end‑grounding for cable‑shield‑layer.
Usage Notes: Do not cut or shorten factory‑integrated sensor‑cable arbitrarily. Prevent heavy‑mechanical‑impact on sensor housing. Avoid long‑term liquid‑submersion although housing is hermetically‑sealed. Prevent strong‑magnetic‑field interference near‑sensor‑installation‑position. Verify sensitivity‑matching with monitoring‑channel configuration.
