Description
Bently 3500/61‑03‑00 | Part Number:133835‑02
Technical Specifications:
- Input Channels:6 temperature measurement channels
- Output Channels:6 channels 4‑20mA recorder output
- Channel‑to‑channel Isolation: 250 Vdc
- Power Consumption:9 Watts nominal
- Operating Temperature:0°C ~ +60°C
- Storage Temperature:‑40°C ~ +85°C
- Rack Slot Requirement:2 slots
- Certifications: SIL2, CE, UL, RoHS compliant Functional Features:
- Galvanic isolation between every input channel eliminates ground loop noise
- Each channel independent 4‑20mA recorder output for external DCS and recorder
- Supports RTD and multiple thermocouple sensor types, channel‑wise sensor type configuration
- High‑alarm and danger‑alarm threshold programmable for each channel
- Sensor open‑circuit, short‑circuit fault diagnosis function
- Channel bypass function for maintenance work
- Can trigger system relay modules for machine protection trip Application Scenarios:
- Off‑shore oil & gas platform compressors and turbines with heavy electromagnetic interference
- Large thermal power plant turbine‑generator unit bearing temperature monitoring
- Petrochemical complex where multiple grounding points exist and ground loop interference occurs
- Sites needing both machinery protection function and analog output for external control system Performance Parameters:
- Measurement Accuracy: ±0.5% full scale
- Recorder Output Accuracy: ±0.2% full scale
- Response Time: Less than 1 second
- RTD Measuring Range:‑200°C ~ +850°C
- Thermocouple Measuring Range:‑100°C ~ +1370°C Material Composition:
- Front panel: Oxidation‑treated aluminum alloy
- Main circuit board: FR‑4 fire‑retardant PCB with isolation transformer components
- Shield shell: Cold‑rolled steel anti‑interference housing
- Backplane connector: Gold‑plated industrial bus connector Structural Characteristics:
- Double‑slot plug‑in module for 3500 rack system
- Front panel multi‑LED status indication for module health, alarm and bypass status
- Rear end mates with isolated thermocouple I/O assembly 133835‑02
- Mechanical locking screws for rack mounting Working Principle: Field RTD or thermocouple signals enter through isolated I/O assembly 133835‑02. Internal isolation circuit blocks ground‑loop interference. After signal amplification and analog‑digital conversion, real‑time temperature data is compared with alarm setpoints. Digital data transmits to rack backplane, meanwhile each channel generates corresponding 4‑20mA analog recorder output. Alarm events send request signal to system relay modules for protection action. Installation Requirements:
- Install into two adjacent slots inside 3500 instrument rack
- Power off rack before plug‑in or pull‑out operation, not hot‑swappable
- Use shielded twisted‑pair cable for field sensor wiring, single‑end grounding at cabinet
- Separate sensor signal wiring from high‑voltage power wiring
- Must use matched isolated I/O assembly 133835‑02
- Ensure unobstructed air circulation for heat dissipation Usage Notes:
- Configure sensor type and measurement range by official 3500 rack configuration software before commissioning
- Do not connect different voltage potential ground points to different input channels
- Check terminal screw tightness periodically for vibration‑prone equipment cabinet
- Avoid humid, corrosive gas environment
- Complete full‑loop calibration including field sensors on annual maintenance cycle
