Bently 990‑04‑50‑01‑00 Vibration Transmitter

Product Brief Introduction Bently 990‑04‑50‑01‑00 is a compact field‑mounted vibration transmitter of Bently Nevada 990 series. It works with velocity sensor to measure casing vibration of rotating machinery. It converts vibration velocity signal into standard 4‑20mA analog output signal, which can be directly connected to DCS, PLC or display instrument. It provides local machinery condition monitoring function for industrial rotating equipment.
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Technical Specifications Power supply 24VDC loop‑powered. Measuring range 0‑50 mm/s. Output signal 4‑20mA. Operating temperature ‑40℃ ~ +85℃, humidity 5%‑95% non‑condensing. Industrial shell, suitable for field installation. Two‑wire loop power supply mode.

Functional Features Measure machinery casing vibration velocity value. Convert vibration physical quantity to standard 4‑20mA output. Built‑in signal filtering function to suppress high‑frequency interference. Internal self‑diagnosis for sensor fault. Compact field mounting structure, no need for rack cabinet.

Application Scenarios Centrifugal pump vibration monitoring, fan and blower condition supervision, large‑size motor casing vibration measurement, compressor auxiliary equipment monitoring, petrochemical field rotating machinery local measurement.

Performance Parameters Measurement accuracy ±5% full scale. Response time meets general rotating machinery monitoring requirement. Adapt to long‑term continuous field operation.

Structural Characteristics Compact field‑installation metal housing. External wiring terminal interface. Wall or DIN‑rail mounting structure. Sealed shell for field environment adaption.

Working Principle Receive vibration analog signal from velocity sensor. Internal circuit implements signal conditioning, filtering and calculation. Convert vibration velocity value into standard 4‑20mA current signal output for upper‑level control system acquisition.

Installation Requirements Install close to measured equipment, fix housing firmly. Complete wiring according to definition, confirm 24VDC loop power supply. Avoid installation position with strong mechanical impact. Keep away from high‑frequency electromagnetic interference sources.

Usage Notes Confirm measuring range matches actual working condition before putting into service. Check wiring tightness periodically. Prevent housing corrosion caused by field corrosive medium.




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