Description

The Bently Nevada 3300/20-13-02-01-00-00, also cataloged as the 3300/20 Dual Radial Vibration Monitor, operates as a dedicated hardware component for continuous dual-channel radial shaft vibration tracking within 3300 Monitoring System platforms.

Suffix Breakdown & Model Matrix

• 13: Full-scale range option (0 to 15 mils peak-to-peak scale configuration)
• 02: Transducer input selection option (3300 or 7200 8mm 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 internal processor applies strict eddy-current probe scaling matrices to convert raw peak-to-peak dynamic voltage oscillations into linear micro-inch or mil vibration measurements. During continuous operation, the input tracking loop performs constant gap voltage validation (-10 VDC targets) to verify that the target shaft remains centered within the linear window of the proximity sensor. Consequently, this alignment check isolates mechanical fluid-film bearing clearance data from electrical errors caused by thermal drift. To preserve signal clarity within multi-bearing housings, built-in cross-talk suppression filters isolate the active channels, supplying clean orbital data required to assess complex rotor dynamics.

Frequently Asked Questions

Q: Can maintenance personnel use this module to monitor axial thrust parameters?

A: No. The internal logic and filtering configurations track dynamic peak-to-peak radial motion. For thrust position tracking, you must employ a dedicated 3300/55 thrust position monitor.

Q: What happens to the relay outputs if a field cable breaks or shorts?

A: The integrated Not OK circuit instantly flags the out-of-range sensor voltage. Within 15 milliseconds, the monitor de-energizes the channel OK LED, clamps the recorder output, and inhibits the Danger relays to block false machinery shutdowns.

Field Installation Guidelines

• Disconnect all primary rack backplane power feeds prior to sliding the monitor card assembly into its designated chassis housing slot.
• Route all proximity probe extension cables through dedicated, isolated metal conduit paths away from high-voltage AC lines to prevent EMI signal corruption.
• Terminate all shield drain wires directly at the designated backplane chassis ground strip, maintaining a single-point grounding configuration to eliminate ground loop current induction.