GE DS200TCQCG1A

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”: High accuracy + advanced diagnostics (drift, degradation, sense-lead) + C1 wiring + enhanced cold-junction compensation + standard conformal coating

Key Features

High accuracy – ±0.08% for critical temperature monitoring
Advanced diagnostics – drift monitoring, degradation prediction, sense-lead integrity, and open/short detection
Enhanced cold-junction compensation – better linearization across ambient variations than standard C1 variants
Faster sampling – 10 Hz for responsive monitoring
C1 wiring configuration – specific channel-to-terminal mapping for certain GE cabinet variants; direct fit for C1-configured systems
Simple swap – no firmware changes required in most Mark V systems
LED status per channel + board health with diagnostic indicators
Standard conformal coating for moisture/dust resistance
Backward compatible with Mark V and Mark VIe (hot-swap only on VIe Rev D+)

Applications

Gas turbine EGT monitoring in C1-configured cabinets – high accuracy with predictive diagnostics and improved ambient stability
Steam turbine bearing monitoring in C1 systems – critical protection with drift anticipation
Specialized industrial turbines – where C-series wiring is standard
Cogeneration plants with C1 wiring – precision monitoring with diagnostic insights
Facilities with C1-standard cabinets requiring advanced compensation

Comparison with Competitors

Selection Tips

Choose the DS200TCQCG1A only if your cabinet uses C1 wiring configuration and you require high accuracy (±0.08%) with advanced diagnostics and enhanced cold-junction compensation
For C1 systems with the same features but standard compensation, consider DS200TCQCG1 (if available)
For C1 systems with high accuracy but no diagnostics, consider DS200TCEACG1A (if available)
For extended temperature (70°C) with similar features, consider DS200TCQCG1B (if available)
For enhanced coating protection with similar specs, consider DS200TCQCG1A with specialized coating suffix (e.g., DS200TCQCG1AEB or similar)
For G1 systems requiring similar features, use DS200TCQBG1A
Verify existing wiring pinout against C1 standard – using the wrong terminal block or miswiring will scramble channel readings
Source refurbished units with C1 pinout verification and diagnostic test validation

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 – exceeding 65°C reduces component life
Pinout critical – C1 mapping differs from G1/G2; verify cabinet wiring before installation
Calibrate every 24 months – diagnostics and enhanced accuracy depend on a valid baseline calibration
Ground shields only at the board end
Verify thermocouple type – optimized for J/K (T/E reduces accuracy to ±0.15%)
Monitor diagnostic logs – drift warnings indicate sensor aging; plan proactive replacement
Label clearly – mark board and slot as “TCQCG1A – DIAG/ENH CJC/C1” to ensure proper handling and prevent future miswiring with G1/G2 boards
Do not mix C1, G1, and G2 boards without verifying terminal block compatibility in the same rack