Functional Description
3300/65 is a dual probe monitor designed and developed by Bently Nevada. Dual Probe Monitor combines the shaft relative displacement signal from a Bently Nevada proximity transducer and casing vibration from a velocity transducer, both of which are installed in the same axis on the machine, into a single measurement of shaft absolute vibration. Dual Probe Monitors are intended for use in machines with fluid film bearings, such as large steam and gas turbines, where shaft vibration is transmitted to the case. The Dual Probe Monitor provides four distinct measurements:
- Shaft relative vibration – A measurement of shaft vibration relative to the bearing housing using a proximity probe.
- Bearing housing vibration – A seismic measurement of the vibration of the bearing housing in relation to free space.
- Shaft absolute vibration – A vector sum of shaft relative and bearing housing vibration.
- A proximity probe dc gap measurement of the shaft’s average radial position relative to the bearing clearance.

Technical Features
Modular Design: The modules are designed in a modular manner, facilitating installation, replacement, and maintenance.
High Precision Measurement: Built-in high-precision sensors ensure the accuracy and reliability of measurement data.
Support for Multiple Sensors: Supports various types of pressure sensors, allowing for selection and configuration based on actual needs.
Easy Integration: The modules support multiple communication protocols, facilitating integration with factory control systems and asset management systems.
Application fields
The Bently Nevada 3500/64M 140734-05 Dynamic Pressure Module is widely used in the monitoring and protection of rotating machinery in industries such as petroleum and natural gas, power, metallurgy, and chemical engineering. For example, in the petroleum and natural gas industry, this module can be used for pressure monitoring of equipment such as oil drilling platforms and natural gas compression units; in the power industry, it can be used for pressure monitoring and diagnosis of key equipment such as power generators and steam turbines.

Description
Bentley Nevada has been synonymous with mechanical protection and condition monitoring for more than 60 years, helping customers solve some of their toughest challenges. From refineries and petrochemical plants to hydroelectric facilities and wind farms, Bently Nevada Asset Condition Monitoring provides a combination of reliable and reliable vibration monitoring equipment and comprehensive service to help improve the reliability and performance of production assets, such as turbines, compressors, motors, generators, and everything in between.
3500 Machinery Protection System Product Features
3500 Series protection and condition monitoring system is a flexible, scalable platform for continuous, online monitoring of your most critical machinery as well as all other machine assets used in plant-wide processes, all available in a single comprehensive system.
– Reliable and Compliant
– Compatible and Flexible
– Communicates with System 1
– Available Options
– Safety Certified
Applications and industries
• Steam turbines
• Hydraulic turbines
• Industrial gas turbines
• Aeroderivative gas turbines
• Reciprocating compressors
• Centrifugal compressors
• Axial compressors
• Screw compressors
• Gears
• Turbo-expanders
• Horizontal and vertical centrifugal pumps
• Reciprocating pumps
• Electric motors
• Generators
• Fans
• Blowers
• Agitators
• Mixers
• Centrifuges
• Pulp refiners
• Ball mills
• Crushers/pulverizers
• Extruders
• Pelletizers
• Cooling tower/heat exchanger fans







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