Description

The Bently Nevada 3300/20-13-02-01-00-00, also cataloged as the Bently Nevada 3300/20 Dual Vibration Monitor, operates as a dedicated hardware component for processing continuous radial vibration signals within the 3300 Series Monitoring Systems network.

Suffix Breakdown & Model Matrix

Hardware Specifications

Machinery Monitoring & TSI Characteristics

The monitor processes physical displacement data to protect critical turbomachinery during steady-state operations and transient events. Specifically, the internal conditioning electronics manage eddy-current probe scaling for two independent channels. Consequently, the module executes continuous gap voltage validation across a -10 VDC target baseline to ensure precise proximity tracking. Furthermore, internal differential filtering networks apply rigorous cross-talk suppression. As a result, the module blocks adjacent channel interference and delivers clean shaft orbit and rotor dynamics data to the backplane.

Frequently Asked Questions

Q: How does the monitor respond if a transducer fault or broken cable occurs during operation?

A: The internal logic continuously checks the DC gap voltage against pre-programmed limits. Consequently, if the voltage breaches the target window, the module activates the Not OK circuit. Therefore, the monitor bypasses alarm execution for that channel to prevent false machine trips.

Q: Can maintenance technicians adjust the alert and danger setpoints without disconnecting field wiring?

A: Yes. The front panel contains internal adjustment potentiometers and a digital display. Thus, technicians can modify the alarm thresholds directly while the monitor remains inside a live rack.

Field Installation Guidelines

• Jumper Verification: Check the internal circuit board jumpers before inserting the hardware into the rack. Consequently, you align the module configuration with the selected 4-20 mA or 1-5 VDC recorder output types.
• Shield Isolation: Terminate the outer shield of the proximity probe extension cable exclusively at the rear terminal block ground terminal. Therefore, you prevent ground loops and eliminate extraneous electrical noise.
• Chassis Engagement: Push the module firmly into its assigned slot until the backplane contacts engage completely. Then, tighten the front panel retaining screws to secure the physical connection.
• Signal Cable Isolation: Route the low-level coaxial transducer lines through dedicated metallic conduits. Thus, you shield the vibration data from high-current switching paths.