Configured for casing vibration measurement in Turbomachinery Train Receipt (TSI) networks, the Bently Nevada 9200-03-02-02-00 (9200 Two-wire Transducer) provides direct physical/electrical execution. It operates as a self-generating velocity transducer designed to measure absolute casing vibration relative to free space.
Suffix Breakdown & Model Matrix
The specific alphanumeric configuration defines the physical layout and operational limits as follows:
9200: Base model for the Two-wire Velocity Seismoprobe Transducer.
03: Transducer Mounting Angle / Minimum Operating Frequency Option specifying 90 degC +/- 2.5 degC orientation relative to horizontal, with a minimum operating frequency of 4.5 Hz (270 cpm).
02: Side mount connector configuration.
02: Circular mounting base with 1/4-in 28 UNF threaded stud.
00: Agency Approval Option indicating no hazardous area approvals are required.
Hardware Specifications
Parameter
Specification
Model Brand
Bently Nevada
Origin
U.S.A (Certificate of Origin available upon request)
Weight
0.3 Kg
Dimensions
Standard cylindrical housing with circular base
Operating Temp
-29 degC to +121 degC
Power Consumption
Self-generating (No external power required)
Mounting Angle
90 degC +/- 2.5 degC
Minimum Frequency
4.5 Hz (270 cpm)
Connector Type
Side mount electrical connector
Mounting Interface
Circular base with 1/4-in 28 UNF stud
Agency Approvals
None required (00 option)
Rotor Dynamics and Cross-Talk Suppression
As a critical component within Bently Nevada TSI architectures, this moving-coil velocity transducer interacts directly with rotor dynamics monitoring channels. The internal coil is suspended on precise spring matrices to ensure single-axis sensitivity while eliminating cross-axis cross-talk suppression failures. When assessing absolute structural vibration alongside proximity probe data, the 4.5 Hz lower frequency boundary ensures proper tracking of low-speed synchronous machine components without phase lag anomalies.
Frequently Asked Questions
Q: Does this transducer require an external power supply or loop power?
A: No. The 9200 series uses a moving-coil design that generates its own voltage signal proportional to velocity. It operates without external DC power or excitation voltages.
Q: What are the consequences of mounting this specific configuration horizontally?
A: The "03" option designates a vertical orientation (90 degC +/- 2.5 degC). Installing this unit horizontally or outside the specified angle limits shifts the internal coil alignment, introducing severe calibration errors, friction, and potential mechanical clipping.
Field Installation Guidelines
Mechanical Torquing: Ensure the 1/4-in 28 UNF mounting stud is securely engaged into the casing surface. Torque the mounting base to the standard industrial specification to prevent housing resonance and false high-frequency transmission.
Cable Routing: Secure the side-mount mating connector to avoid cable whip. Run the transducer cable through rigid or flexible conduit to minimize triboelectric noise induction caused by physical cable movement.
Shielding and Grounding: Terminate the cable shield at the monitor rack or terminal enclosure end only. Maintain continuous shield isolation through any intermediate junction boxes to prevent ground loops that interfere with low-frequency signal accuracy.
