DS200TCCAG2B GE

Technical Parameters

Based on the Mark V DS200 series specifications, the DS200TCCAG2B features the following key parameters:

• Primary Function: High-Density Thermocouple Input Termination Board with Enhanced CJC (Second Generation)

• Input Channels: 16 thermocouple input channels (double the G2A capacity)

• Thermocouple Types Supported: J, K, T, E, S, R, B (enhanced over G1 series)

• Cold-Junction Compensation: Onboard high-accuracy thermistor with ±0.4°C accuracy typical (improved over G1 ±0.5°C)

• Input Impedance: >1 MΩ

• Terminal Type: Screw-type terminal blocks (accepts 0.5-2.5mm² wire, AWG 20-14)

• Voltage Rating: 300V AC/DC maximum

• Current Rating: 10A per terminal (maximum)

• Isolation: No active isolation (passive termination); relies on connected modules for isolation

• Form Factor: Single-slot 6U Eurocard (160mm), 96-pin DIN connector to backplane

• Mounting: Direct plug-in to Mark V rack; front-facing screw terminals for thermocouple wiring

• Operating Environment: -10°C to 65°C ambient temperature (extended range), 5% to 95% non-condensing humidity

• Labels: Enhanced labeling with clearly marked channel designations (CH1+, CH1-, etc.) and type selection guides

• Compliance: UL recognized, CE marked, RoHS compliant

Advantages and Features

The DS200TCCAG2B offers several distinctive advantages for Mark V system thermocouple signal termination:

1. High Channel Density with Enhanced CJC: The DS200TCCAG2B combines 16-channel capacity with ±0.4°C CJC accuracy, providing both high density and superior measurement precision.

2. Enhanced Cold-Junction Compensation: With ±0.4°C CJC accuracy (improved over G1’s ±0.5°C), the DS200TCCAG2B provides superior temperature measurement precision.

3. Extended Temperature Range: Rated for -10°C to 65°C, suitable for installations in extreme environments.

4. Multi-Type Support: Supports thermocouple Types J, K, T, E, S, R, and B.

5. Second-Generation Design: Improved component selection for enhanced long-term stability and reliability.

6. High-Density Termination: With 16 channels, significantly reduces board count in large-scale temperature monitoring applications.

7. Passive Design: Contains no active electronics (other than CJC thermistor), making the DS200TCCAG2B highly reliable.

8. Hot-Swap Capable: Supports live insertion and removal with proper ESD protocols.

Application Cases in Application Fields

The DS200TCCAG2B is deployed across multiple heavy-industrial sectors:

• Combined Cycle Power Plants: A 750MW CCPP facility uses the DS200TCCAG2B for comprehensive exhaust temperature spread monitoring across multiple turbine stages. The 16-channel capacity reduced board count by 50%, and the ±0.4°C CJC accuracy improved measurement precision for turbine efficiency calculations.

• Gas Turbine Test Cells: The DS200TCCAG2B provides high-accuracy thermocouple termination for performance validation testing with multiple Type B thermocouples at high temperatures.

• Steam Turbine Retrofits: During a control system refurbishment, a facility installed the DS200TCCAG2B for comprehensive temperature monitoring across main steam, reheat, and extraction stages, with a mix of thermocouple types.

• Offshore Oil Platforms: The high channel density and extended temperature range of the DS200TCCAG2B have proven valuable on offshore platforms where rack space is limited.

Comparison with Competing Products

Selection Suggestions and Precautions

Before purchasing or installing the DS200TCCAG2B:

• Verify Exact Model: Ensure the board is precisely DS200TCCAG2B, not DS200TCCAG2A, DS200TCCAG1B, or other variants. The “G2B” suffix is critical for 16-channel capacity, ±0.4°C CJC accuracy, extended temperature range, and Type B support.

• Confirm Thermocouple Types: Ensure your thermocouple types (J, K, T, E, S, R, B) are supported by the DS200TCCAG2B.

• Environmental Assessment: If your installation experiences temperatures outside 0-60°C, the DS200TCCAG2B is the recommended choice.

• Channel Planning: With 16 channels, carefully plan your sensor allocation. The DS200TCCAG2B can accommodate multiple thermocouple types across channels.

• Thermocouple Wiring: Use correct thermocouple extension wire (same type as sensor). Avoid standard copper wire for extensions.

• Polarity: Ensure correct polarity for all terminations.

• Shielding: Use shielded thermocouple cables in electrically noisy environments. Connect the shield at the DS200TCCAG2B end only.

• CJC Stability: Ensure adequate airflow around the DS200TCCAG2B and avoid mounting near heat sources to maintain ±0.4°C CJC accuracy.

• ESD Protection: Use grounded wrist straps during handling.

• Post-Installation Validation:

  • Verify all terminations are mechanically secure.

  • Confirm correct polarity and sensor type for each of the 16 channels.

  • Check CJC readings against a known ambient temperature reference.

  • Verify temperature readings at the HMI match expected values for all channels.

• Spare Strategy: Maintain at least one spare DS200TCCAG2B on-site.

• Supplier Qualification: Request visual inspection and CJC accuracy verification (±0.4°C) before shipment.

Final Recommendation

For GE Mark V turbine systems requiring high-density thermocouple input termination with enhanced CJC accuracy and second-generation reliability, the DS200TCCAG2B is the premier solution. Its 16-channel capacity, ±0.4°C CJC accuracy, extended temperature range, and Type B thermocouple support provide efficient, accurate thermocouple signal routing for large-scale temperature monitoring applications in the most demanding environments. Prioritize reputable aftermarket suppliers offering tested units with CJC accuracy verification. Maintain spares on-site, use correct thermocouple extension wire, and ensure proper polarity to guarantee the long-term reliability of your DS200TCCAG2B and the entire Mark V control system.