9200-01-01-01-00 | Bently Nevada | Velocity Transducer

Product Overview

The 9200-01-01-01-00 is a high-performance two-wire Seismoprobe velocity transducer manufactured by Bently Nevada. Unlike piezo-velocity sensors that use internal integration of an acceleration signal, this unit utilizes a rugged moving-coil design. This electro-mechanical architecture allows the 9200-01-01-01-00 to measure absolute vibration relative to free space with superior resistance to impulsive or high-frequency "noise" excitation. It is specifically engineered for casing and structure monitoring on medium-speed rotating machinery, where accurate velocity data is essential for identifying unbalance, misalignment, or bearing housing instability.

Technical Specifications

The 9200-01-01-01-00 features a specialized construction designed for long-term reliability in industrial environments.

• Transducer Type: Moving-Coil Seismoprobe

• Output Signal: Voltage proportional to vibration velocity

• Wiring Configuration: Two-wire, non-polarized system

• Sensitivity: Standardized for Bently Nevada monitoring interfaces

• Frequency Response: Optimized for machinery casing vibration monitoring

• Sensor Diameter: 41.4 mm (approx. 1.63 inches)

• Mounting Weight: 3.0 kg (6.6 lbs)

• Housing Material: Ruggedized industrial casing

• Operating Temperature: Extended range for gas turbine and compressor casings

• Connector Type: Industrial-grade multi-pin connector

Engineering Advantages and Applications

The moving-coil technology within the 9200-01-01-01-00 provides a significant advantage in applications prone to "spiking" or impact-driven noise. Because it lacks the sensitive crystalline structures of solid-state accelerometers, it effectively filters out non-machinery related impulses that often cause false alarms in other systems. This makes the 9200-01-01-01-00 the preferred choice for bearing housings on large pumps, centrifugal compressors, and turbine structures. Its two-wire interface allows for simple integration with the Bently Nevada 3500/42M or 1900/65 monitors, reducing field wiring complexity.

Frequently Asked Questions

• Can I replace an accelerometer-based velocity sensor with the 9200-01-01-01-00?While both provide velocity data, the 9200-01-01-01-00 is an absolute vibration sensor. You must ensure your monitor is configured for a "Seismoprobe" type input, as the scale factor and power requirements differ from integrated accelerometers.

• Why is this transducer significantly heavier than modern sensors?

• The weight (approx. 3 kg) is due to the internal moving-coil and magnet assembly. This mass is essential for the seismic reference principle, allowing the sensor to remain stationary relative to free space while the machine casing vibrates.

• Is the 9200-01-01-01-00 compatible with older Bently Nevada racks?

• Yes, this transducer maintains backwards compatibility with most legacy 3300 and 7200 series monitoring systems, provided the correct I/O modules are used.