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GE IS200VTCCH2C
Technical Specifications: 24 differential thermocouple input channels; supports TC types E, J, S, K, T, B, R, N (8 types); voltage measurement span –20 mV to +95 mV; 16-bit resolution (0.1 °C measurement resolution); –200 °C to +1300 °C measurement range (depending on TC type); maximum cable resistance 450 Ω; up to 300 m connection distance to control cabinet; 24 VDC supply, typical 400 mA; VME bus, 1-slot occupancy; compatible terminal boards TBTC and DTTC; 260 × 35 × 200 mm, ~0.8 kg; –30…+65 °C operating; 50-pin female connector; conformal coating for moisture and vibration protection.
Detailed content
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Functional Features: On-board cold-junction compensation achieves 0.1 °C temperature measurement accuracy over continuous operation; supports both grounded and ungrounded thermocouples; 16-bit ADC with noise rejection; VME backplane communication to Mark VI controller.
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Application Scenarios: Temperature monitoring in gas turbines, steam turbines, and general industrial process heating; blade temperature, bearing temperature, exhaust gas temperature measurement; compatible with a wider range of devices than the H1 model, suitable for general-purpose industrial applications beyond pure turbine use.
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Working Principle: Differential TC signals are acquired via the terminal board, conditioned on-card, cold-junction compensated, converted by 16-bit ADC, and transmitted over the VME backplane to the Mark VI controller for further processing.
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Installation & Usage Notes: Before any operation, confirm the Mark VI cabinet is fully de-energized and execute Lockout/Tagout (LOTO); verify the exact model IS200VTCCH2C matches the system requirement (H2C revision differs from H1 in voltage span and TC support); use compatible TBTC or DTTC terminal boards; ensure field cable resistance ≤450 Ω and total length ≤300 m; confirm conformal coating integrity in high-humidity environments.
