Bently Nevada 3500/65-01-00 (145988-02)

Bently Nevada 3500/65-01-00 (145988-02)

Product Introduction: The 3500/65 is a temperature monitor within the 3500 Machinery Protection System family. It belongs to the same temperature monitoring category as the 3500/60 and 3500/61, providing multi-channel temperature monitoring capabilities for critical rotating machinery. The 3500/65 offers enhanced features and is part of the broader 3500 TSI (Turbine Supervisory Instrumentation) system, supporting continuous online monitoring for mechanical protection applications.

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Description

Bently Nevada 3500/65-01-00 (145988-02)

Technical Specifications:

  • Channels: Multi-channel temperature monitoring
  • Signal Inputs: RTD and thermocouple temperature inputs
  • Alarm Setpoints: Per-channel Alert and Danger thresholds, programmable
  • Communication: Via 3500 backplane; data accessible through TDI
  • Power Requirements: Powered from the 3500 rack backplane
  • Operating Temperature: -30°C to +65°C
  • Storage Temperature: -40°C to +85°C

Functional Features:

  • Multi-channel temperature monitoring for bearings, casings, windings, and process points
  • Supports RTD and thermocouple sensor inputs
  • Per-channel programmable alarm setpoints
  • Integration with 3500 system relay modules for trip logic
  • System 1 software connectivity for trending and diagnostics
  • Front-accessible module replacement
  • Compatible with the 3500 TSI system architecture

Application Scenarios:

  • Bearing metal temperature monitoring on turbines, compressors, and pumps
  • Generator winding and bearing temperature monitoring
  • Gas turbine exhaust and casing temperature tracking
  • Lube oil system temperature monitoring
  • Petrochemical and power generation applications requiring temperature protection
  • Any rotating machinery application where temperature is a critical protection parameter

Performance Parameters:

  • Measurement Accuracy: Consistent with 3500 system temperature monitoring specifications
  • Alarm Response: Configurable Alert and Danger thresholds per channel
  • Signal Processing: Digital conditioning with onboard CJC for thermocouple inputs

Material Composition: Industrial-grade electronic components in a standard 3500 rack module enclosure

Structural Features: Single-slot front plug-in monitor with matching rear I/O module. The module occupies one 3500 rack slot and connects to field sensors through the rear I/O terminal block.

Working Principle: The module conditions RTD and thermocouple input signals, converts them to digital temperature values, and compares them against user-programmable Alert and Danger setpoints. When a channel exceeds a configured threshold, the module triggers the corresponding alarm output through the 3500 relay system.

Installation Requirements:

  • Install in a Bently 3500 rack within an IP-rated cabinet
  • Provide clean, dry air circulation
  • Land sensors on the rear I/O module maintaining proper polarity
  • Use shielded cables with proper grounding
  • Avoid mixing thermocouple extension wire types

Usage Notes:

  • De-energize circuits before servicing
  • Observe ESD handling procedures
  • Verify readings against a reference annually
  • Check terminal tightness and review event logs regularly
  • The 3500/65 is part of the 3500/60, /61, /65 temperature monitor family; consult the system manual for specific differences in output capabilities and I/O configurations

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