Product Overview

The 3300/65-13-01-00-00-02-00 is a high-reliability dual-channel vibration monitoring module from the Bently Nevada 3300 series. This instrument is specifically engineered to provide continuous, online oversight of casing vibration using velocity transducers. By measuring seismic vibration—the absolute movement of a machine's housing—this module delivers critical early warning data regarding structural looseness, mechanical unbalance, and bearing wear. Featuring independent channel logic and a dedicated local display, it ensures that rotating assets remain within safe vibration limits, triggering automated protective alerts or shutdowns when thresholds are breached.

Essential Hardware Parameters

• Monitoring Capacity: Two independent channels for simultaneous velocity measurement

• Measurement Range: 0 to 1.0 in/s (25 mm/s) Peak (Option 13)

• Transducer Input Type: Compatible with 500 mV/in/s velocity sensors (Option 01)

• Relay Configuration: Standard epoxy-sealed relays for alarm outputs

• Safety Barrier Configuration: Internal safety barriers included (Option 02)

• Signal Accuracy: Within ±1.6% of monitor full-scale

• Local Interface: Vertical LCD/LED display for real-time vibration amplitude

• Net Weight: Approximately 1.15 kg (2.5 lbs)

• Module Dimensions: 241 mm x 50 mm x 103 mm (9.50 in x 1.98 in x 4.05 in)

Engineering Deployments and Applications

This seismic vibration monitor is a core component for machinery protection strategies where non-contacting proximity probes are not applicable or where absolute casing motion is the primary safety metric. Typical applications include:

• Industrial Fan Monitoring: Tracking casing vibration in large cooling and exhaust fans to identify blade deposits or unbalance.

• Centrifugal Pump Protection: Oversight of pump housings to detect cavitation-induced vibration or hydraulic instability.

• Electric Motor Safety: Continuous monitoring of motor frames to identify mechanical looseness or stator-related faults.

• Hydroelectric Facilities: Measuring absolute vibration on turbine housings and generator frames.

• Cooling Tower Gearboxes: Protecting remote drivetrain components from structural vibration damage.

FAQ

Q: Does this module require an external power supply?

A: No, the 3300/65 is powered directly through the Bently Nevada 3300 series rack backplane, which provides the necessary regulated DC voltage for operation and transducer excitation.

Q: Can I use this monitor with proximity probes for shaft displacement?

A: This specific module is designed for velocity inputs from seismic sensors. If you need to monitor shaft displacement, a 3300/15 or 3300/20 series monitor would be the appropriate hardware.

Q: What is the benefit of the internal safety barrier (Option 02)?

A: The internal barrier allows the monitor to interface directly with transducers located in hazardous areas without requiring separate, external zener barriers, simplifying the wiring and reducing rack space requirements.

Q: How are the alarm setpoints adjusted?

A: Setpoints for Alert and Danger levels are typically adjusted via potentiometers on the module or through the rack’s communication interface, allowing for precise calibration to specific machine limits.

Q: Is there a buffered output for diagnostic tools?

A: Yes, the 3300/65 typically includes front-panel coaxial connectors (BNC) that provide buffered raw signals for use with external oscilloscopes or data collectors for vibration analysis.