The Bently Nevada 3300/20-05-03-01-00-00 serves as the primary 3300/20 Dual Thrust Position Monitor utilized to execute axial shaft displacement monitoring across 3300 System platforms. The module processes two independent channels of proximity probe inputs to detect physical thrust movements relative to a calibrated reference point, generating alarm signals when displacement limits cross predefined thresholds.

Option String Matrix

• 3300/20 : Base Model for Dual Thrust Position Monitor

• -05 : Full-scale Range Option: 50-0-50 mils

• -03 : Transducer Input Option: 7200 14 mm or 3300 HTPS Proximitor systems, 100 mV/mil scaling

• -01 : Alarm Relay Option: Epoxy-sealed relays

• -00 : Agency Approval Option: Not required / Standard implementation

• -00 : Safety Barrier Option: None / No internal safety barriers installed

Technical Parameter Details

Rotor Dynamics and Gap Voltage Validation

The 3300/20-05-03-01-00-00 relies on continuous gap voltage validation targeting -10 VDC nominal baselines to calculate real-time axial shaft dynamics. The hardware integrates eddy-current probe scaling algorithms optimized for 7200 14 mm and 3300 HTPS Proximitor networks, translating linear voltage transitions directly into precise physical micro-inch displacements. Internal circuit topologies isolate structural cross-talk suppression paths across the backplane interface, preventing high-frequency rotor dynamic harmonics from triggering false relay trips during transient machinery operation.

Delivery Package Manifest

• 1 x Bently Nevada 3300/20-05-03-01-00-00 Monitor Module

• 2 x Retaining Screws for Chassis Integration

• 1 x Grounding Clip Component

Hardware Mounting Protocol

• Chassis Slot Alignment

• Insert the hardware module smoothly into the designated 3300 rack chassis slot until the multi-pin backplane connector seats completely.

• Retaining Fastener Load

• Tighten the front-panel retaining screws to establish electrical ground continuity through the chassis metal frame assembly.

• Transducer Shield Continuity

• Terminate the incoming Proximitor shield wire at the rack terminal strip common ground bus bar, keeping it floating at the sensor end.

• Wiring Channel Separation

• Route low-voltage transducer signal leads through independent wire ways separate from high-voltage relay contact circuits to mitigate electromagnetic field induction.

Technical Assessment Questions

• Does this monitor support live hot-swapping procedures while the rack is powered?

  No. The 3300 series rack system must be completely powered down before extracting or inserting the module to prevent electrical damage to backplane traces.

• What is the target electrical gap voltage for initial proximity probe alignment?

  The physical proximity probe installation must be adjusted until the Proximitor output registers a target value of -10 VDC at the physical center point.

• How does the monitor respond to an internal circuit hardware malfunction?

  An internal component failure triggers the dedicated NOT OK circuit indicator, which automatically de-energizes the channel status relay to prevent false alarms.

• Can a 3300 8 mm proximity probe system be connected directly to this module?

  No. The input calibration options are explicitly configured for 7200 14 mm or 3300 HTPS Proximitor inputs utilizing a standard 100 mV/mil scale factor.

• What is the exact maximum backplane current draw for a single module slot?

  The module draws a maximum continuous current of 450 mA from the internal +24 VDC rack power supply rail under full alarm configuration.

• Are the epoxy-sealed alarm relays configured for latching or non-latching operations?

  The alarm relay behavior is determined by internal hardware jumper settings on the circuit board, which can be modified during bench pre-commissioning.

• What physical protection protocol does the epoxy-sealed relay choice offer?

  The sealed configuration protects internal relay contacts from corrosive ambient atmospheres, preventing oxide layer formation that degrades signal paths.

• How is the full-scale displacement span calibrated inside this specific device?

  The range is hardware-defined by the front-panel scaling hardware options, establishing a fixed symmetric tracking measurement envelope of 50-0-50 mils.