Description

The Bently Nevada 3300/40-13-01-01-00-00, also cataloged as the 3300/40 Dual Eccentricity Monitor, operates as a dedicated hardware component for continuous dual-channel peak-to-peak shaft eccentricity tracking within 3300 Monitoring System platforms.

Suffix Breakdown & Model Matrix

• 13: Full-scale range option (0 to 15 mils peak-to-peak scale configuration)
• 01: Transducer input selection option (7200 or 3300 8 mm Proximitor sensor inputs)
• 01: Alarm relay hardware configuration option (Epoxy-sealed Alert/Danger relays)
• 00: Agency approval option (None/Standard factory inspection)
• 00: Barrier option (No internal safety barriers installed)

Hardware Specifications

Machinery Monitoring and TSI Characteristics

The processing architecture applies strict eddy-current probe scaling configurations to track slow-rotational bow or shaft warp parameters. During continuous operation, the input circuitry executes real-time gap voltage validation (-10 VDC targets) to verify that the proximity sensors operate within their linear measurement range. Consequently, this step prevents signal loss or peak clipping when measuring heavily bowed shafts. To prevent signal interference from adjacent turbine instrumentation, integrated cross-talk suppression filters isolate the active channels, providing steady data streams for assessing rotor dynamics during slow-turn turning gear operation.

Frequently Asked Questions

Q: Why is a Keyphasor signal connection necessary for the operation of this module?

A: The monitor depends on the external Keyphasor pulse to identify a complete shaft revolution. This synchronization allows the internal processor to calculate the exact maximum-to-minimum peak-to-peak eccentricity value across each turn.

Q: How does the monitor respond if a transducer cable is disconnected during a machine run?

A: An internal Not OK monitoring loop continuously checks for sensor out-of-range faults. If a cable disconnect occurs, the logic instantly de-energizes the channel OK LED, clamps the recorder output, and locks out the Danger relays within 15 milliseconds to stop false trips.

Field Installation Guidelines

• Disconnect all primary rack backplane power sources prior to inserting or extracting the monitor card assembly to prevent voltage transients.
• Run all proximity probe extension cables through isolated metal conduits, completely separated from alternating current power lines to eliminate induction noise.
• Terminate all shield drain wires directly at the designated backplane chassis ground strip, utilizing a single-point grounding layout to eliminate ground loop currents.