Bently Nevada 9200-03-05-10-00 9200 Series Seismoprobe Velocity Transducer

Description

The 9200-03-05-10-00 is a 2-wire moving-coil velocity transducer engineered for the absolute vibration measurement of casing structures, bearing housings, or structural components. Operating on a self-generating electrodynamic principle, this 9200-03-05-10-00 seismoprobe transforms mechanical velocity into a proportional voltage signal without requiring external excitation power. Its moving-coil design delivers robust resistance against false trips or signal degradation typically induced by impact, shock, or impulsive excitation near reciprocating or heavy rotating equipment. The transducer features a top-mounted terminal block interface for field electrical termination and mounts onto flat machine surfaces via a threaded stud, allowing direct integration into machinery protection systems, distributed control systems (DCS), or plant asset management monitors.

Features

• Electrodynamic moving-coil architecture providing high immunity to false trips caused by shock or high-frequency impact.
• Passive, self-generating design eliminates the need for external loop or module power supplies.
• 2-wire electrical connectivity for straightforward field wiring and long-distance signal transmission.
• Top-mounted terminal block layout facilitates flexible configuration of regional field cables.
• Rugged construction designed to maintain measurement fidelity under continuous machinery case vibration.

Applications

• Horizontal vibration monitoring on large industrial pumps and fans.
• Bearing housing casing velocity measurements on steam and gas turbines.
• Structural monitoring of gearbox casings and support frames.
• Casing vibration tracking on industrial motors, generators, and blowers.

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Surface Preparation: Prepare a flat, clean, and smooth surface on the machine bearing housing or casing. Ensure the area is free of rust, paint, or grease to guarantee proper mechanical transmission.
• Mechanical Threading: Secure the transducer tightly to the prepared surface utilizing the M10x1 threaded mounting stud. Tighten the base mounting stud to a torque specification of 5.6 Nm (50 in lb). Adhere strictly to this limit to prevent casing distortion.
• Orientation Verification: Align the transmitter strictly for horizontal operation (90 degrees +-2.5 degrees from vertical). Misalignment outside this window alters internal suspension physics and leads to severe measurement errors.
• Connector Integrity: When attaching field wiring components, tighten the connector terminals to a specification of 1.41 Nm (12.5 in lb) to establish secure electrical contact without damaging the hardware threads.
• Cable Selection: Use a high-quality, twisted 2-conductor shielded instrument cable to run signals from the top terminal block to the instrumentation rack.
• Shield Grounding: Connect the cable shield wire cleanly to the instrumentation or monitor ground at the control room end only. Insulate the shield wire at the transducer terminal box to prevent ground loops.
• Impact Prevention: Avoid hitting or dropping the transducer housing during installation procedures to safeguard the internal moving-coil mechanism from structural deformation.