DS200TCDAH1BGD GE

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, 4-wire compensation

• Isolation: 1500V AC

• Accuracy: ±0.10% at 25°C

• Sampling: 5 Hz sequential

• Temp Range: -25°C to +65°C (operating), -40°C to +85°C (storage)

• Mounting: VME rack

• Suffix “GD”: Enhanced diagnostics (drift detection, degradation prediction) + improved component selection

Key Features

• 4-wire sensing cancels lead resistance for stable readings over long distances

• Enhanced diagnostics – drift monitoring, degradation prediction, and calibration verification (beyond basic open/short)

• Improved accuracy (±0.10% vs ±0.12% on standard H1B)

• Extended temperature range (up to 65°C vs 60°C)

• Simple swap – no firmware changes required in most Mark V systems

• LED status per channel + board health

• Standard conformal coating for moisture/dust resistance

• Backward compatible with Mark V and Mark VIe (hot-swap only on VIe Rev D+)

Applications

• Large combined-cycle plants – remote HRSG and stack thermocouples with predictive maintenance needs

• Pipeline compressor stations – distributed suction/discharge sensors requiring early fault warning

• Steam turbine bearings – long runs with drift-prone sensors

• Industrial cogeneration – remote boiler temperature monitoring with diagnostic logging

• Mining/heavy industry – wide-area sensor networks where sensor degradation is common

Comparison with Competitors

Selection Tips

• Choose the DS200TCDAH1BGD if you need predictive diagnostics on long thermocouple runs

• For basic monitoring without drift detection, the standard DS200TCDAH1B is more economical

• Verify existing wiring is 4-wire – 2-wire systems require new cables

• Use correct H-series terminal blocks (GD uses same pinout as H1B)

• Source refurbished units with full diagnostic 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 65°C ambient

• Calibrate every 24 months – the GD’s drift diagnostics rely on a valid baseline

• Ground shields only at the board end

• Label cables clearly as “4-wire H-series” to prevent future miswiring