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GE IS220PTCCH1A

Product Name:​ Mark VIe PTCC Thermocouple Input Module
Product Introduction:​ 12-channel thermocouple acquisition pack for Mark VIe turbine exhaust, bearing, and process temperature monitoring.
Technical Specifications:
  • Channels: 12 differential TC inputs
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Detailed content

  • Types: J, K, E, T, S, R, B (per channel config)
  • Input Span: -8 mV to +45 mV
  • Resolution: 16 bit
  • Cold Junction Comp: onboard CJC sensor per bank
  • Isolation: 1500 V DC channel-to-backplane
  • Power: from IONet pack bus (24 V derived)
  • Temp Range: -30 °C to +70 °C
Functional Features:​ Per-channel open-wire detection, CJC fault alarm, 50/60 Hz digital filtering, auto-scaling to °C/°F in controller.
Application Scenarios:​ Gas turbine exhaust spread, generator bearing temp, HRSG header temp.
Material Composition:​ FR4 PCB, instrument-grade instrumentation amp, gold contact backplane.
Structural Characteristics:​ Mark VIe pack form, RJ45 IONet, no front terminals (remote TB).
Working Principle:​ TC millivolts amplified → offset by CJC → 16-bit ADC → linearized to temperature → published to controller.
Installation Requirements:​ Use shielded twisted pair, ground shield at terminal board only.
Usage Notes:​ Never land millivolt source with common-mode > isolation rating; keep CJC unobstructed.

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