BENTLY 3500/54-03-00 Temperature Monitor Module

Overview

The 3500/54 module occupies a single slot in a 3500 rack and communicates with the rack interface module (RIM) and other monitors via the internal bus. It is available in various channel counts and input types. The -03-00 suffix indicates a specific configuration, typically featuring 6 or 8 channels with universal inputs (both RTD and thermocouple) and programmable alarm setpoints. The module continuously scans each channel, compares measured values against user-defined alarm thresholds, and updates the rack with status information.

Key Features

• Multi-Channel Input: Typically 6 or 8 channels per module, expandable by adding multiple modules.

• Universal Inputs: Accepts Pt100 RTDs (2/3/4 wire) and thermocouples types J, K, T, E, N, R, S.

• High Accuracy: ±0.1% of full scale for RTDs, ±1°C for thermocouples.

• Programmable Alarms: Two independent alarm setpoints per channel with adjustable hysteresis and time delays.

• Cold-Junction Compensation: Internal for thermocouples, with optional external reference.

• Isolation: Channel-to-channel and channel-to-ground isolation to prevent ground loops.

• Data Output: Temperature values available via the rack communication bus for display, trending, and export.

• Front Panel LEDs: Indicate channel status, alarm conditions, and module health.

Technical Specifications

• Input Channels: 6 or 8 (depending on configuration).

• RTD Types: Pt100 (α=0.00385), Ni120, Cu10.

• Thermocouple Types: J, K, T, E, N, R, S.

• Measurement Ranges: RTD: -200°C to +850°C; Thermocouple: -200°C to +1760°C.

• Scan Rate: 1 channel per second (all channels updated every 6-8 seconds).

• Resolution: 0.1°C.

• Power Supply: 5 VDC from rack backplane.

• Operating Temperature: -30°C to +65°C.

• Certifications: CSA, CE, ATEX (for safe area use).

Applications

The 3500/54 temperature monitor is widely used in industries such as power generation, oil and gas, petrochemical, and pulp and paper. Typical applications include:

• Turbine bearing temperature monitoring.

• Generator stator winding temperature monitoring.

• Compressor discharge temperature monitoring.

• Pump bearing and motor winding temperature monitoring.

• Process temperature monitoring in critical machinery.

Configuration and Integration

The module is configured using the 3500 System Configuration Software. Users select sensor types, engineering units, alarm setpoints, and relay mapping. The module stores its configuration in nonvolatile memory and can be hot-swapped if replacement is needed. Data from the 3500/54 can be accessed by plant DCS or condition monitoring software via optional communication gateways. The module's robust design ensures long-term reliability in demanding environments.

In summary, the BENTLY 3500/54-03-00 temperature monitor module delivers precise and dependable temperature measurement for comprehensive machinery protection, helping to maintain operational safety and efficiency.