Technical Specifications PLC System: GE Series 90‑30 Input: Multi‑channel thermocouple input Supported thermocouple types: J,K,E,T etc Built‑in cold‑junction compensation Operating Temperature: 0℃ ~ +60℃
Functional Features Thermocouple millivolt signal acquisition. Automatic cold‑junction compensation. Sensor open‑circuit fault diagnosis. Channel independent configuration.
Application Scenarios Industrial furnace, kiln equipment temperature monitoring, chemical process temperature control, Series90‑30 PLC projects.
Performance Parameters Temperature conversion accuracy: Industrial level precision
Structural Characteristics Series90‑30 rack‑mount module, field wiring terminals, LED status indicator, backplane gold‑plated connector.
Working Principle Thermocouple weak voltage signal is amplified and compensated inside module, converted to digital temperature value, transmitted to PLC CPU via backplane bus.
Installation Requirements Insert into Series90‑30 rack slot. Thermocouple loop use compensation cable. Avoid large temperature fluctuation around module.
Usage Notes Configure thermocouple type for each channel in software. Do not replace compensation cable with common wire.
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