GE DS200TCTGG1A

Technical Parameters

Manufacturer: GE
Series: Mark V / Mark VIe
Channels: 16 differential
Input Range: -10 mV to +100 mV (Type J/K/T/E)
Cold Junction: Single onboard sensor with enhanced linearization and improved thermal isolation
Isolation: 1500V AC
Accuracy: ±0.08% at 25°C, ±0.15% across full temperature range
Sampling: 10 Hz sequential
Operating Temp: -30°C to +65°C
Storage Temp: -40°C to +85°C
Mounting: VME rack
Suffix “G1A”: Enhanced accuracy (0.08%) + G1 wiring + enhanced cold-junction compensation + basic diagnostics (open/short only) + standard conformal coating

Advantages & Key Features

The DS200TCTGG1A offers high precision with improved ambient stability. Key advantages include:

Enhanced Accuracy – ±0.08% for critical temperature measurements.
Enhanced Cold-Junction Compensation – Better linearization across ambient variations than standard G1 variants.
Faster Sampling – 10 Hz for responsive monitoring.
Basic Self-Diagnostics – Open-circuit and short-circuit detection per channel.
Simple Swap – No firmware changes required in most Mark V systems.
LED Status – Per-channel + board health indicators.
Standard Conformal Coating – Moisture and dust resistance.
Backward Compatibility – Compatible with Mark V and Mark VIe (hot-swap only on VIe Rev D+).

Application Cases

This board is ideal for applications requiring high accuracy with improved stability:

Gas Turbine EGT Monitoring – Precise exhaust temperature tracking with stable readings despite ambient shifts.
Steam Turbine Bearing & Casing Temperatures – Critical protection with enhanced compensation.
Generator Stator Cooling – Accurate temperature monitoring for over-temperature protection.
Compressor Performance Monitoring – High-precision data with improved ambient stability.
HRSG Temperature Measurement – Improved thermal efficiency tracking.

Comparison with Competitors

Selection Tips

Choose the DS200TCTGG1A if you need enhanced accuracy (±0.08%) with enhanced cold-junction compensation in a G1 cabinet.
For the same accuracy with standard compensation, consider the DS200TCTGG1 (if available).
For specialized “S” performance optimizations with similar accuracy and compensation, consider DS200TCSAG1A.
For advanced diagnostics (drift/degradation) with similar accuracy, consider DS200TCQAG1A.
For basic monitoring where ±0.12% is acceptable, the DS200TCRAG1A is more economical.
Verify existing wiring is 2-wire standard – G1-series terminal mapping applies.
Source refurbished units with cold-junction compensation verification in the test report.

Precautions

ESD Sensitive – Use wrist strap.
Power Down for Mark V removal (no hot-swap).
Torque Terminals to 0.5 N·m max.
Do Not Exceed -30°C to +65°C operating range.
Calibrate Every 24 Months – Accuracy and compensation depend on valid calibration.
Ground Shields only at the board end.
Verify Thermocouple Type – Optimized for J/K (T/E reduces accuracy to ±0.15%).
Label Clearly – Mark as “G1A ENH ACCURACY/CJC” to distinguish from standard boards.