Bently Nevada 3500/65 16-Channel Temperature Monitor

High-Performance Monitoring of Temperature with RTD and TC Inputs

The Bently Nevada 3500/65 is a versatile 16-channel temperature monitoring system. It accepts both RTD (Resistance Temperature Detectors) and isolated tip thermocouple (TC) inputs, making it ideal for various industrial applications. The system conditions these inputs and compares them against user-configurable alarm setpoints. You can easily set up the system using the 3500 Rack Configuration Software.

The 3500/65 monitor is highly flexible, allowing you to configure it for isolated tip thermocouples, 3-wire RTD, 4-wire RTD, or even a combination of TC and RTD inputs. It is especially suitable for monitoring temperature in critical machinery, offering reliable readings and protection.

In Triple Modular Redundant (TMR) configurations, the system requires installing monitors in groups of three adjacent units. This configuration ensures that the system avoids single-point failures and maintains highly accurate operation by using two types of voting mechanisms for data validation.

Key Technical Specifications

Feature	Specification
Product Type	3500/65 16-Channel Temperature Monitor
Power Consumption	3 watts nominal
Input Channels	1 to 16 RTD or isolated tip TC signals
Input Impedance	Greater than 1 MΩ for each lead input
Signal Input Types	RTD and TC (Thermocouple)
RTD Types	100 Ω 3-wire and 4-wire platinum (α = 0.00385), 100 Ω 3-wire and 4-wire platinum (α = 0.00392), 120 Ω 3-wire and 4-wire nickel, 10 Ω 3-wire and 4-wire copper
TC Types	Type E: -100°C to +1000°C, Type J: 0°C to +760°C, Type K: 0°C to +1370°C, Type T: -160°C to +400°C
Temperature Range for RTDs	-200°C to +850°C (Platinum) / -80°C to +260°C (Nickel) / -100°C to +260°C (Copper)
Temperature Range for TCs	-148°F to +1832°F (Type E), 32°F to +1400°F (Type J), 32°F to +2498°F (Type K), -256°F to +752°F (Type T)
Monitoring Configuration	Triple Modular Redundant (TMR) configuration available
Alarm Setpoints	User-programmable

Features and Benefits

16-Channel Monitoring: The 3500/65 offers 16 separate temperature input channels, enabling precise and comprehensive monitoring for multiple sensors.
Versatile Input Options: Supports both RTD and TC temperature inputs, with flexibility to handle isolated tip thermocouples, 3-wire RTDs, and 4-wire RTDs.
Flexible Configuration: Easily configurable through the 3500 Rack Configuration Software, allowing for a combination of RTD and TC inputs.
High Reliability: In Triple Modular Redundant (TMR) configurations, the system uses advanced voting mechanisms to prevent single-point failures, ensuring continuous and accurate operation.
Wide Temperature Range: Monitors a broad range of temperatures with RTD and TC types, ideal for a variety of industrial applications.

Applications

The Bently Nevada 3500/65 temperature monitor is commonly used in:

Critical Equipment Monitoring: Ideal for temperature measurement in rotating machinery, turbines, and compressors.
Process Control Systems: Provides accurate temperature feedback for automated control and safety systems.
Power Generation: Used to monitor the temperature of steam turbines, generators, and other equipment in power plants.
Oil & Gas: Suitable for temperature monitoring in exploration, production, and refinery equipment.