GE DS200TCQBG1BCB

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 +70°C
Storage Temp: -40°C to +85°C
Mounting: VME rack
Suffix “G1BCB”: High accuracy + advanced diagnostics (drift, degradation, sense-lead) + G1 wiring + extended upper temperature (70°C) + “CB” coating package (mid-grade enhanced conformal coating offering good moisture resistance and mild-to-moderate chemical protection – generally comparable to “CC” or similar grades, slightly better than “BA” or “FB”)

Key Features

High accuracy – ±0.08% for critical temperature monitoring
Advanced diagnostics – drift monitoring, degradation prediction, sense-lead integrity, and open/short detection
Extended upper temperature limit – operates up to 70°C, suitable for hotter cabinets
“CB” mid-grade coating – good moisture resistance and mild-to-moderate chemical protection; suitable for humid or mildly chemically exposed environments
Faster sampling – 10 Hz for responsive monitoring
G1 wiring configuration – standard channel-to-terminal mapping
Simple swap – no firmware changes required in most Mark V systems
LED status per channel + board health with diagnostic indicators
Backward compatible with Mark V and Mark VIe (hot-swap only on VIe Rev D+)

Applications

Coastal power plants with moderate salt spray – improved moisture protection with elevated cabinet temperatures
Chemical processing facilities with occasional fume exposure – mild-to-moderate chemical resistance
High-humidity tropical installations – robust moisture barrier with extended temperature performance
Paper and pulp mills – humid environments with mild chemical exposure
Gas turbine EGT monitoring in warm, chemically exposed areas – high accuracy with predictive diagnostics

Comparison with Competitors

Selection Tips

Choose the DS200TCQBG1BCB if you need high accuracy (±0.08%), advanced diagnostics, extended temperature (70°C), and mid-grade coating protection in a G1 cabinet – ideal for warm, moderately chemically exposed environments requiring predictive maintenance
For the same features with standard coating, consider DS200TCQBG1B (less protection)
For better chemical resistance with similar specs, consider DS200TCQBG1BEC (premium coating) or DS200TCQBG1BDE (if available)
For severe chemical/corrosion exposure, upgrade to DS200TCQBG1BJE (military-grade) or DS200TCQBG1BTF (PTFE) if available
For basic accuracy without diagnostics, the DS200TCEBG1BCB is more economical
Verify existing wiring is 2-wire standard – G1-series terminal mapping applies
Source refurbished units with coating inspection 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 +70°C operating range – exceeding 70°C reduces component life
Avoid damaging the coating – scratches compromise protection
Use isopropyl alcohol only for cleaning – “CB” coating resists some solvents but avoid acetone/MEK; confirm compatibility with GE documentation
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 as “TCQBG1BCB – DIAG/EXT TEMP/CB COAT” to ensure proper handling
Monitor cabinet temperature – if consistently near 70°C, consider cooling improvements or upgrade to wider-range variants if needed