The Bently Nevada 74712-01-02-02-00 is a two-wire, high-temperature velocity transducer designed to measure absolute vibration of machinery components. In other words, it directly measures how fast, not how far, a machine surface is moving. This sensor is ideal for harsh environments that exceed the capabilities of standard vibration sensors.

Type

• Industrial velocity transducer
• High-temperature variant

Features

• High-temperature operation: Capable of withstanding temperatures up to 204°C (400°F), making it suitable for hot machinery applications.
• Two-wire design: Simplifies installation and reduces wiring costs.
• Moving-coil technology: Provides a voltage output proportional to vibration velocity. This design offers good immunity to electrical noise and avoids integration drift that can occur with accelerometers.

Technical Specifications

• Measurement range: ±100 in/sec (peak)
• Frequency response: 10 Hz to 1 kHz
• Sensitivity: 20 mV/mm/s (500 mV/in/s)
• Output signal: ±10 V
• Operating temperature: -29 °C to +204 °C (-20 °F to +400 °F)

Applications

• Machine monitoring and protection in high-temperature environments, such as gas turbines, steam turbines, and internal combustion engines.
• Predictive maintenance programs by identifying early signs of machine wear through vibration analysis.
• Condition monitoring for rotating machinery in industrial plants.

Benefits

• Improved machine reliability and uptime by allowing early detection of potential problems.
• Reduced maintenance costs through preventive maintenance practices.
• Enhanced process safety by ensuring the safe operation of machinery.