Bently 133819-02 61小卡 RTD/TC Non‑Isolated Rear I/O Small Card with Internal Terminations for 3500‑61 Temperature Monitor

Description

Hardware Specifications

• Part Type: Rear I/O small card, strictly paired with 3500‑61 front‑end monitor module, standalone operation not supported
• Mounting: Rear slot position of 3500‑05 rack, front‑rear separated architecture
• Termination: On‑board built‑in wiring terminals; no extra external terminal block required. Supports 6‑channel RTD / TC sensor inputs and corresponding 6‑channel recorder output terminals
• PCB: Conformal‑coated multilayer printed circuit board for harsh industrial environments
• Mechanical: Standard 3500‑series rear small‑card form factor, net weight approx. 0.45 kg
• Environmental: Operating temperature ‑30 ℃ ~ +65 ℃; storage temperature ‑40 ℃ ~ +85 ℃; vibration and shock performance complies with API‑670 machinery protection standard
• Electrical: Non‑isolated signal design. Routes temperature sensor inputs and recorder output signals between field devices and the front‑end module backplane; no on‑board signal isolation circuit.

Core Functions

1. Acts as physical field‑wiring interface for the 3500‑61 temperature monitor, receiving RTD and thermocouple measurement signals and routing them to the matched front‑end processing module.
2. Provides dedicated terminal access for 6‑channel recorder analog outputs unique to 3500‑61, enabling connection to chart recorders, data acquisition or external DCS systems for temperature data recordingBaker Hugh….
3. Supports both RTD and TC input types; all channel type selections, range configuration, alarm threshold setup and diagnostic processing are completed on the paired 3500‑61 front‑end module. This rear card only implements hardware‑level signal routing and conduction.
4. No on‑board microprocessor; all fault diagnosis and alarm logic are executed by the front‑end monitor module.
5. Supports temperature measurement and protection for rotating equipment including steam turbines, gas turbines and centrifugal compressors, monitoring bearing metal temperature, stator winding temperature and other process‑critical temperature points.

Installation Requirements

1. Mandatory one‑to‑one slot matching with compatible 3500‑61 front‑end module. Mismatched front‑rear part numbers will cause channel reading anomalies or loss of recorder output function.
2. Perform insertion‑removal operations under rack power‑off condition. Although the 3500 rack supports front‑module hot‑swap, rear I/O small‑card replacement shall be executed with power cut‑off to prevent signal transient disturbance and accidental recorder output spikes.
3. Apply proper torque to field wiring terminals. Loose wiring will lead to temperature signal drift, intermittent readings and false recorder output fluctuations.
4. Maintain sufficient cabinet ventilation. Avoid direct exposure to corrosive gas, oil mist and conductive dust, to prevent PCB trace corrosion and terminal oxidation.
5. Inspect backplane connector pins before installation. Bent, contaminated or corroded pins may result in partial channel dropout or unstable communication between front‑rear modules.