Bently Nevada 3300/35 Six-Channel Temperature Monitor

Bently Nevada 3300/35 Six-Channel Temperature Monitor

The Bently Nevada 3300/35, also cataloged as the 3300/35 Six-Channel Temperature Monitor, operates as a dedicated hardware component for multi-point thermal data acquisition within Bently Nevada 3300 monitoring systems. This monitor provides six independent channels specifically configured to process inputs from resistance temperature detectors (RTDs), enabling precise thermal status tracking for critical machinery bearings and housing components.

Hardware Specifications

Mechanical Monitoring & TSI Integration

The 3300/35 monitor is engineered to maintain high measurement accuracy for rotor dynamics systems where temperature trends provide early indicators of bearing instability. The module utilizes high-impedance input stages to prevent signal degradation, ensuring that eddy-current probe scaling or other auxiliary mechanical measurements remain unaffected by thermal channel activity. Robust cross-talk suppression is employed across the six independent channels to ensure that localized resistance fluctuations on one sensor do not introduce artifacts into adjacent monitoring loops. Accurate thermal baseline monitoring is critical for validating data during gap voltage validation (-10 VDC targets) checks on associated proximity transducer systems.

Frequently Asked Questions

Q: Can the 3300/35 monitor be used with thermocouple inputs?

A: No, the 3300/35 is specifically designed for resistance temperature detectors (RTDs). Thermocouple inputs require the 3300/30 TC monitor module version.

Q: Does the module support individual channel configuration for alarms?

A: Yes, the 3300/35 allows for independent alarm setpoint programming for each of the six channels, providing flexible protection thresholds based on specific bearing or machine location requirements.

Field Installation Guidelines

• Mounting: Insert the module into an available slot in the 3300 rack. Ensure the rear connector pins align correctly with the backplane for reliable power distribution and communication.
• Wiring: Utilize high-quality, shielded extension wire for all RTD connections. Proper wire sizing is mandatory to minimize lead-wire resistance errors, which can cause significant deviations in temperature readings.
• Shielding: Terminate the cable shields at the designated ground bar located within the 3300 rack to maintain signal integrity and mitigate the effects of electromagnetic interference.
• Environment: Ensure the rack is installed in a climate-controlled area. Although rated for operation up to 65 deg C, sustained high-temperature operation can affect the long-term drift characteristics of the internal sensing circuitry.