Description

Configured for continuous machinery vibration and radial position assessment in industrial machinery protection platforms, the Bently Nevada 3300/16-12-01-01-00-00 (3300/16 XY/Gap Dual Vibration Monitor) provides direct physical/electrical execution. This specialized internal logic module evaluates dual independent channels of radial vibration and average shaft gap position to drive automated safety interlocks.

Suffix Breakdown & Model Matrix

• 3300/16: Base model for the XY/Gap Dual Vibration Monitor module.
• -12: Full-scale range option designating 0 to 150 micrometers peak-to-peak (µm pp).
• -01: Transducer input compatibility option designating 3300 8 mm, 3300 XL 8 mm, or 7200 5 mm and 8 mm Proximitor Sensors (200 mV/mil sensitivity).
• -01: Alarm relay option specifying an epoxy-sealed relay module assembly.
• -01: Agency approval option specifying European ATEX, IECEx, and North American hazardous area compliance certificates.
• -00: Barrier option designating no internal zener barriers installed.
• -00: Trip multiply option specifying no factory-configured trip multiply functionality.

Hardware Specifications

Transducer Interface & Mechanical Monitoring Characteristics

The monitor conditions raw sensor currents to execute precise eddy-current probe scaling for dual orthogonal (X-Y) radial sensor paths. In doing so, the microprocessor performs real-time gap voltage validation (-10 VDC targets) to verify optimal shaft-to-tip proximity margins before evaluating dynamic displacement vectors. Furthermore, active hardware-level cross-talk suppression eliminates reciprocal radio-frequency interference between adjacent probe tips, ensuring that high-frequency rotor dynamics calculations remain clean and undistorted.

Frequently Asked Questions

Q: How does the monitor respond to a severe sensor failure or wire break?

A: The module executes an automated Not OK diagnostic routine when field voltage breaches the standard operational envelope. Consequently, the monitor clamps the 4-20 mA recorder output to an error state of +2 mA or +4 mA and locks out the associated Danger relays to prevent a false machinery trip.

Q: What operational risks develop if this 4 to 4,000 Hz option runs on slow-turning machinery below 1,000 rpm?

A: Running the standard frequency band on low-speed machinery can cause the hardware to attenuate sub-synchronous vibration components. Therefore, operators must deploy the alternative 1 to 600 Hz low-frequency configuration to capture low-speed rotor dynamics accurately.

Field Installation Guidelines

1. Slide the main monitor circuit card smoothly into the designated 3300 chassis slot until the rear headers mate fully with the parallel backplane bus connectors.
2. Fasten the rear-facing epoxy-sealed relay terminal block module straight onto the chassis position exactly matching the front slot alignment.
3. Terminate external 4-20 mA recorder shield drains explicitly at the designated instrument ground bus bar, leaving the field-side loop ungrounded to prevent ambient ground current loops.
4. Verify the backplane input supply rails provide a stable negative potential within the defined -18 VDC or -24 VDC limits before executing operational commissioning routines.