Casing Vibration Measurement with the 46920-01
The 46920-01 measures casing vibration velocity on rotating machinery in power and process plants. This velocity sensor converts structural movement into an electrical signal for monitoring systems. Reliability engineers therefore mount it on bearing housings and gearbox casings. Its threaded stud installs directly onto machined surfaces without adapters.
Detailed Technical Parameters
Frequency response defines the 46920-01, because the internal sensing element generates voltage proportional to velocity. The sealed housing shields the transducer from oil mist and dust. Meanwhile, the integral connector carries the signal to the monitor rack. Review the essential specifications in the table below.
| Parameter | Specification |
|---|---|
| Function | Velocity sensor for casing vibration measurement |
| Output signal | Voltage proportional to vibration velocity |
| Frequency range | 10 Hz to 1000 Hz |
| Dimensions (W × H × D) | 30 × 65 × 30 mm |
| Weight | Approximately 0.15 kg |
| Interface | Integral connector with monitor rack cable |
| Component count | Sensing element plus sealed housing |
| Energy storage | None (passive electromagnetic sensor) |
| Operating temperature | -20 °C to 120 °C |
Integration into Monitoring Systems
The 46920-01 threads onto the machine casing and routes its cable to the monitor rack. Technicians therefore complete installation without separate drivers or junction boxes. Consequently, vibration channels start collecting data within minutes. The sensor requires no external power and generates its own signal. Furthermore, the sturdy housing withstands vibration, heat, and oil exposure on turbine decks.
Why Plants Choose This Sensor
Many power stations still rely on velocity sensors for proven machinery protection. Hence, the 46920-01 serves as a dependable spare for keeping vibration channels online. Its standardized thread format simplifies stock management across multiple sites. In addition, the passive design eliminates calibration drift and power supply faults. This sensor keeps casing vibration data accurate and maintenance schedules on track.
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