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Bently Nevada 9200-03-06-10-00 Seismoprobe Velocity Transducer

The Bently Nevada 9200-03-06-10-00, also cataloged as the 9200 Seismoprobe Velocity Transducer, operates as a dedicated hardware component for absolute casing and bearing housing vibration measurement within Turbine Supervisory Instrumentation (TSI) networks.

Suffix Breakdown & Model Matrix

Code	Definition
9200	Two-wire moving-coil velocity transducer, no external power required
03	Mounting angle 90 deg ±2.5 deg (vertical), min. operating frequency 4.5 Hz
06	Coaxial connector option for test/diagnostic interface
10	Circular mounting base with M10 x 1 threaded stud
00	No agency approvals (standard industrial application)

Hardware Specifications

Parameter	Specification
Model Brand	Bently Nevada
Origin	U.S.A.
Weight	300 g (10.5 oz)
Dimensions	41 mm dia. x 102 mm height
Operating Temp	-29 degC to +121 degC
Power Consumption	None (passive device)
Sensitivity	20 mV/mm/s ±5% @ 22 degC, 10 kOhm load, 100 Hz
Frequency Response	4.5 Hz – 1 kHz (+0 dB, -3 dB)
Coil Resistance	1.25 kOhm ±5%
Locked Coil Inductance	125 mH typical
Amplitude Linearity	±5% from 0.254 mm/s to 127 mm/s @ 100 Hz
Dynamic Range	2.54 mm p-p max displacement
Shock Resistance	50 g peak max along non-sensitive axis
Transverse Sensitivity	< ±10% max
Case Material	Anodized aluminum A204
Polarity	Pin A positive relative to Pin B when motion toward connector

Eddy-Current Probe Scaling and Rotor Dynamics Considerations

In TSI architectures, the 9200 series complements eddy-current probe systems by providing a cross-check reference for low-frequency rotor dynamics. Gap voltage validation targets remain fixed at -10 VDC for proximity probes, while velocity output from the 9200 supports correlation against displacement data for torsional and lateral vibration analysis. Cross-talk suppression between coaxial cabling and adjacent proximity probe wiring minimizes signal contamination in densely instrumented machinery trains.

Frequently Asked Questions

Q: Does the 9200-03-06-10-00 support hot-swap replacement on live machinery?

A: No. Although passive, disconnection under vibration can cause transient signals; isolate monitoring channels before removal.

Q: What is the recommended cable shielding practice for coaxial output?

A: Ground the shield at the monitoring system end only, maintaining continuous 360-degree contact with the connector backshell.

Q: Can this unit be used in hazardous areas?

A: No. The 00 suffix indicates no agency approvals; use only in non-hazardous, general-purpose installations.

Field Installation Guidelines

Mount the transducer vertically using the M10 x 1 stud, ensuring thread engagement of at least 5 full turns. Apply anti-seize compound if installation is in high-temperature environments. Route coaxial cable away from high-current power conductors to avoid electromagnetic interference. Verify polarity before final termination: motion toward the connector must produce a positive-going output on Pin A relative to Pin B. Perform a functional tap test post-installation to confirm expected voltage polarity and amplitude response.

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