Bently Nevada 3500/65-01-00 145988-02+172103-01 Velocity Position Monitor

Product Description

The 3500/65-01-00 (145988-02 + 172103-01) from Bently Nevada is a four-channel monitoring solution within the 3500 Machinery Protection System, designed for continuous measurement of vibration velocity, shaft displacement, and phase reference signals in rotating equipment.

This configuration consists of a full-height monitor module (145988-02) paired with a dedicated rear I/O module (172103-01) featuring internal terminal connections. It performs real-time signal acquisition, conditioning, and alarm evaluation, delivering reliable protection for critical machinery.

The module integrates seamlessly with the 3500 rack architecture and communicates through the 3500/22M TDI interface for system-wide data access, including integration with System 1 and Modbus networks.

Functional Capabilities

The 3500/65-01-00 module is engineered to process multiple sensor types and provide flexible monitoring strategies. Key functions include:

• Independent monitoring across four channels

• Acceptance of proximity probes, velocity sensors, and magnetic pickups

• Real-time evaluation of machine condition parameters

• Configurable alarm thresholds with OK, Alert, and Danger states

• Signal conditioning including filtering, scaling, and integration

Each channel operates independently, allowing tailored configuration for different measurement types within the same module.

Measurement Modes

Technical Specifications

Input Characteristics

• Number of Channels: 4 isolated channels

• Supported Sensors: Proximity probes, velocity transducers, magnetic pickups

• Input Coupling: AC or DC depending on configuration

• Typical Measurement Range:

• Proximity: up to ~20 mils

• Velocity: up to ~50 mm/s

• Frequency Response: Approx. 3 Hz to 10 kHz

• Phase Trigger Support: Available (Keyphasor-style configuration)

Alarm and Protection Features

• Alarm Levels: Alert and Danger per channel

• Status Monitoring: Continuous OK signal validation (sensor and wiring integrity)

• Voting Logic: Configurable (e.g., 1oo1, 2oo3 depending on system design)

Output Interfaces (via 172103-01 I/O Module)

• Buffered Outputs: ±10 V for external analysis systems

• Current Outputs: 4–20 mA (rack-dependent configuration)

• Relay Outputs: Provided via external relay modules (e.g., 3500/32, 3500/33)

Environmental Ratings

• Operating Temperature: 0°C to +65°C

• Storage Temperature: -40°C to +85°C

• Humidity: Up to 95% non-condensing

• EMC: Designed for high-noise industrial environments

Mechanical Details

• Monitor Module: Full-height 3500 rack format (145988-02)

• I/O Module: Rear-mounted terminal module (172103-01)

• Installation: Standard 3500 rack slot (front + rear pairing)

• Weight: 1.0 kg

Application Areas

The 3500/65-01-00 is widely used in machinery protection systems where accurate vibration and position monitoring is essential:

• Steam and gas turbine systems

• Centrifugal compressors

• Heavy-duty pumps

• Industrial motors and generators

It is particularly suited for installations requiring both vibration monitoring and phase reference within a single module.

FAQ

What types of sensors can be connected to this module?
It supports proximity probes, velocity transducers, and magnetic pickups, making it adaptable to multiple monitoring strategies.

Can different measurement types be used simultaneously?
Yes, each channel can be independently configured for velocity, position, or phase reference.

Does this module provide relay outputs directly?
No, relay outputs are handled by separate relay modules within the 3500 system.

Is this module compatible with System 1 software?
Yes, data is transmitted via the 3500/22M TDI for integration with System 1 and Modbus-based systems.