9200-03-06-10-00 Bently Nevada Two-Wire Velocity Seismoprobe

Introduction to the 9200-03-06-10-00

For decades, industrial rotating machinery has demanded precise vibration monitoring to prevent catastrophic failures. The 9200-03-06-10-00 from Bently Nevada represents a mature, field-proven solution in this domain. As a two-wire velocity seismoprobe transducer, it converts casing vibration into an electrical signal proportional to velocity. This model, configured with a 90-degree mounting angle and a 4.5 Hz minimum operating frequency, is engineered for permanent installation on critical assets like turbines, compressors, and pumps.

Manufactured by Bently Nevada, a trusted name in machinery protection, this transducer is supplied new in original factory packing. It carries a 12-month factory warranty, ensuring reliability from the first day of service. The 9200 series has been widely adopted across industries because it offers a straightforward, robust approach to vibration sensing without complex external signal conditioning.

Key Features and Technical Specifications

The 9200-03-06-10-00 is defined by a set of precise, performance-oriented specifications. Each parameter contributes to its overall accuracy and durability in harsh industrial environments.

• Sensitivity: 20 mV/mm/s (500 mV/in/s), ±5% when properly terminated and oriented at the angle of calibration.
• Calibration Load: 10 kΩ, with output taken across pins A and B.
• Sensitivity Temperature Coefficient: 0.2%/°C, ensuring stable output across temperature variations.
• Dynamic Operating Range: 2.54 mm (0.100 in) peak-to-peak maximum displacement.
• Velocity Range: 25 mm/s (1 in/s) at +22 °C casing vibration at 100 Hz with a 10 kΩ load.
• Coil Resistance: 1.25 kΩ ±5%.
• Locked Coil Inductance: 125 mH, typical.
• Operating and Storage Temperature: -29°C to +121°C (-20°F to +250°F) for the 9200 model.
• Relative Humidity: Up to 95% noncondensing; 100% non-submerged when ordered with integral cable.
• Case and Adapter Material: Anodized aluminum A204.
• Gasket Material: Neoprene.
• Height: 102 mm (4 in) typical, depending on connector option.
• Diameter: 41 mm (1.6 in) typical.
• Weight: 300 grams (10.5 ounces) typical.

One distinctive aspect is the combination of a 4.5 Hz minimum operating frequency and a 90-degree mounting angle.

Real-World Applications

The 9200-03-06-10-00 is suited for a variety of machinery monitoring tasks. In petrochemical plants, it can be mounted on pumps and motors to detect imbalance or bearing wear. In power generation, it monitors turbine casings, helping operators schedule maintenance before minor issues escalate. The transducer's robust design, with an anodized aluminum case and neoprene gasket, allows it to perform reliably in dusty and humid environments.

Furthermore, its two-wire configuration simplifies wiring, reducing installation costs and potential points of failure. The velocity output is directly proportional to vibration severity, making it easy to integrate into existing protection systems. For predictive maintenance programs, this transducer provides the continuous data needed to trend machinery health over time.

Installation and Setup

Proper installation is critical to achieving accurate measurements. The 9200-03-06-10-00 features a circular mounting base with an M10X1 stud, which provides a secure and repeatable attachment point. The transducer should be oriented at the specified angle of calibration (90 ±2.5 degrees) to ensure the sensitivity remains within the ±5% tolerance.

When wiring, connect the two wires to the appropriate terminals, ensuring a 10 kΩ load is present across pins A and B. This load is necessary for the specified sensitivity and frequency response. Avoid routing cables near high-voltage lines or heat sources, as this can introduce noise or thermal errors. After installation, verify the output signal with a portable vibration calibrator to confirm proper operation.

Maintenance and Reliability

Routine maintenance of the 9200-03-06-10-00 is minimal, but periodic inspection is recommended. Check the mounting stud for tightness, as vibration can loosen connections over time. Inspect the cable for abrasion or damage, especially in areas where it bends or contacts moving parts. The transducer's sealed construction protects against dust and moisture, but ensure that any integral cable glands remain sealed.

Given the temperature range of -29°C to +121°C, the transducer can be installed in most industrial environments without special cooling. The neoprene gasket maintains its sealing properties across this range, preventing ingress of contaminants. By following a simple inspection schedule, users can expect long service life and consistent performance.

Compatibility and Integration

The two-wire velocity seismoprobe is designed to work with Bently Nevada monitoring systems, but its standard velocity output (mV/mm/s) makes it compatible with many third-party vibration monitors and data collectors. The 10 kΩ load requirement is common in industrial signal conditioning, allowing straightforward integration into existing PLC or DCS analog input modules.

For users upgrading from older vibration sensors, the 9200 series offers a drop-in replacement with similar mounting dimensions and output characteristics. Always verify the mounting thread and connector options to match your existing installation.

Support and Availability

The 9200-03-06-10-00 is available from AutoDCSTech, an industrial automation parts supplier. As a new, factory-packed unit, it is ready for immediate deployment. For technical inquiries or to verify lifecycle status, contact AutoDCSTech directly. Our team can assist with compatibility questions and provide documentation to support your installation.