Bently 9200‑01‑08‑11‑02

Bently 9200‑01‑08‑11‑02

Product Introduction: The 9200‑01‑08‑11‑02 is a passive moving‑coil seismic velocity sensor manufactured for casing and bearing housing absolute vibration measurement. This self‑generating two‑wire unit requires no external power supply. It outputs voltage signal directly proportional to casing vibration velocity. This sensor features 90‑degree mounting angle configuration, optimized low‑frequency response, and robust corrosion‑resistant housing. It works together with monitor modules or velocity‑to‑displacement converters to deliver continuous machinery protection and condition monitoring data for rotating equipment. It complies with API‑670 industry requirements for machinery vibration monitoring.

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Description

Bently 9200‑01‑08‑11‑02

Technical Specifications:

  • Sensing Principle: Moving‑coil self‑generating
  • Mounting Angle: 90‑degree installation orientation
  • Nominal Sensitivity: 500 mV/in/s (20 mV/mm/s), tolerance ±5% at 100 Hz
  • Frequency Response: 10 Hz to 1000 Hz (-3 dB)
  • Output Interface: Two‑wire aviation connector
  • Operating Temperature Range: ‑50 °C ~ +120 °C
  • Storage Temperature: ‑55 °C ~ +130 °C
  • Insulation Resistance: ≥100 MΩ at 500 VDC
  • Housing Protection Rating: IP65
  • Weight: 0.42 kg
  • Mechanical Shock Resistance: 50 g peak
  • Vibration Endurance: 10‑2000 Hz, 10 g continuous Functional Features:
  1. Passive self‑powered design without external power source, suitable for portable field test and permanent online monitoring.
  2. 90‑degree installation angle optimizes signal pickup for horizontally oriented vibration of bearing housings.
  3. Excellent anti‑shock performance, low susceptibility to pulse impact interference compared with piezoelectric velocity sensors.
  4. High corrosion‑resistant metal housing, suitable for humid, oily industrial field environment without extra protective casing.
  5. Aviation connector provides stable connection under continuous unit vibration, prevents loose contact.
  6. Direct velocity output, compatible with Bently monitor modules, velocity‑displacement converters and third‑party vibration acquisition instruments.
  7. No internal electronic components inside sensor body, reduces on‑site failure points and extends service life. Application Scenarios: Bearing housing absolute vibration monitoring for centrifugal compressors, large fans, pumps, steam turbines; permanent machinery protection points; periodic field vibration inspection; retrofitting monitoring points for existing rotating machinery; hazardous‑area field vibration measurement. Performance Parameters: Amplitude linearity error ≤ ±3% full scale; phase shift within specified frequency band ≤10°; low noise output; stable long‑term drift; maintains consistent sensitivity under wide temperature variation. Material Composition: 316 stainless steel outer housing; high‑density permanent magnet; copper wound moving coil assembly; high‑strength non‑magnetic internal support frame; glass‑epoxy insulation components; metal aviation connector; fluorosilicone sealing gaskets. Structural Characteristics: Cylindrical compact housing structure; bottom threaded mounting base; side mounted aviation connector; internal fully sealed moving‑magnet moving‑coil assembly; housing engraved with complete part number and unique serial identification. Working Principle: Inside sensor, permanent magnet creates stable magnetic field. When equipment casing vibrates, the internal suspended coil moves relative to magnetic field. Electromagnetic induction generates AC voltage output. The amplitude of output voltage is strictly proportional to casing vibration velocity. External monitoring instruments convert this AC voltage signal into readable vibration velocity or displacement values. Installation Requirements:
  8. Clean mounting base surface completely, remove paint, rust and debris to guarantee rigid mechanical coupling.
  9. Use specified torque to fasten sensor mounting thread, ensure zero relative movement between sensor and equipment casing.
  10. Keep sensor aligned to designated 90‑degree mounting orientation as specified by model code. Deviation from calibrated angle will reduce measurement accuracy.
  11. Route signal cables separate from high‑power motor cables and inverter power wires to avoid electromagnetic interference.
  12. Avoid sharp bending and heavy squeezing on aviation connector and connected cables.
  13. Confirm connector is fully locked, loose connection will cause signal loss or severe distortion. Usage Notes:
  14. Do not drop or apply heavy impact on sensor unit. Severe mechanical impact will damage internal suspended coil assembly permanently.
  15. Never modify or cut internal wiring of sensor. All internal components are factory calibrated.
  16. Keep connector dry and clean. Prevent oil, water and process medium from intruding into connector cavity.
  17. Periodically inspect mounting tightness during unit overhaul. Loosened mounting bolt creates false low‑amplitude vibration readings.
  18. Do not apply high‑voltage insulation test across sensor terminals. Excess high voltage will destroy internal coil winding insulation.

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