DS2020EXTYG2

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 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 “G2”: Enhanced accuracy (0.08%) + advanced diagnostics (drift, degradation, sense-lead) + “EXTY” performance optimizations + G2 wiring + standard conformal coating

Advantages & Key Features

The DS2020EXTYG2 offers a unique combination of high precision, advanced diagnostics, and specialized performance enhancements for G2 systems. Key advantages include:

High Accuracy – ±0.08% for critical temperature monitoring.
Advanced Diagnostics – Drift monitoring, degradation prediction, sense-lead integrity checks, and open/short detection.
“EXTY” Performance Optimizations – Specific enhancements that may include improved thermal stability, faster transient response, enhanced noise rejection, or specialized signal conditioning.
G2-Specific Wiring Configuration – Unique channel-to-terminal mapping matching specific GE cabinet wiring standards; direct drop-in for G2-configured systems.
Faster Sampling – 10 Hz for responsive monitoring.
Enhanced Cold-Junction Compensation – Stable readings across ambient variations.
Simple Swap – No firmware changes required in most Mark V systems.
LED Status – Per-channel + board health with diagnostic 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, predictive diagnostics, and specialized performance in G2-configured cabinets:

Gas Turbine EGT Monitoring in G2 Retrofits – High precision with early fault detection and optimized signal stability in challenging environments.
Steam Turbine Bearing & Casing Temperatures in G2 Systems – Critical protection with drift anticipation and enhanced noise rejection.
Generator Stator Cooling in G2 Cabinets – Accurate monitoring with diagnostic assurance.
Compressor Performance Monitoring with G2 Wiring – Where sensor degradation cannot be tolerated and signal integrity is critical.
HRSG Temperature Measurement in G2 Installations – Enhanced reliability with specialized signal conditioning.

Comparison with Competitors

Selection Tips

Choose the DS2020EXTYG2 only if your cabinet uses G2 wiring configuration and you need high accuracy (±0.08%), advanced diagnostics, and specialized “EXTY” performance optimizations.
For G2 systems with the same features but extended temperature range (70°C), consider DS2020EXTYG2B (if available).
For G2 systems with advanced diagnostics without “EXTY” optimizations, consider DS2020ERCAG2 (if available).
For G2 systems with basic accuracy without diagnostics, consider DS2020TCRAG2 (if available).
For enhanced coating protection with similar specs, consider DS2020EXTYG2 with specialized coating suffix (e.g., DS2020EXTYG2ABC or similar).
For G1/G3 systems requiring similar features, use DS2020EXTYG1 or DS2020EXTYG3 (if available).
If you are rewiring the cabinet, consider converting to G1 for broader board availability.
Verify existing wiring pinout against G2 standard – using the wrong terminal block or miswiring will scramble channel readings.
Source refurbished units with G2 pinout verification, “EXTY” performance test validation, and diagnostic test validation 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.
Pinout Critical – G2 mapping differs from G1/G3; verify cabinet wiring before installation.
Calibrate Every 24 Months – Diagnostics and 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 “EXTYG2 – DIAG/EXTY/G2” to ensure proper handling and prevent future miswiring with G1/G3 boards.
Do Not Mix G2, G1, and G3 Boards without verifying terminal block compatibility in the same rack.
Confirm “EXTY” Specifications with your supplier – request detailed test documentation.