Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Inputs | 8 differential, TC-dedicated (J,K,T,E,R,S,B,N) |
| ADC | 20-bit sigma-delta (18-bit effective) |
| Accuracy | ±0.035% FS (25°C); ±0.09% (-40°C to +85°C) |
| CJC Accuracy | ±0.2°C (4 sensors) |
| Sampling | 10-1000 Hz (user-selectable) |
| Isolation | 2500V RMS |
| Power | +5V @ 1.3A; +15V @ 0.55A |
| Diagnostics | Open/short, out-of-range, rate-of-change, CJC health, telemetry, predictive health |
| Firmware | Field-upgradeable via JTAG and USB |
| Conformal Coating | Standard |
| MTBF | >295,000 hours |
Advantages
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TC-Dedicated – Optimized for thermocouples only.
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20-Bit ADC – Industry-leading resolution.
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Superior CJC – ±0.2°C accuracy (flagship level).
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2500V Isolation – Maximum protection.
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1000 Hz Sampling – Fastest in HMPJ series.
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Dual Firmware Update – JTAG + USB ports.
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Predictive Health Diagnostics – Early fault detection.
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Conformal Coating Standard – Harsh environment ready.
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Hot-Swap Capable – IEEE 1101.11 compliant.
Applications
| Industry | Use |
|---|---|
| Gas Turbines | EGT monitoring, combustion mapping (Frame 6B/7E/9E) |
| Steam Turbines | High-pressure steam temp, bearing monitoring |
| Combined Cycle | HRSG superheater/reheater temp |
| Oil & Gas | LM2500/LM6000 exhaust temp |
Comparison
| Feature | DS3800HMPJ1B1D | DS3800HMPJ1A1D | DS3800HMPJ (Flagship) | DS3800HMAC1H1F |
|---|---|---|---|---|
| ADC | 20-bit (18 eff.) | 20-bit (17.8 eff.) | 20-bit (18 eff.) | 18-bit (16.8 eff.) |
| Accuracy | ±0.035% | ±0.04% | ±0.03% | ±0.04% |
| CJC | ±0.2°C | ±0.22°C | ±0.2°C | ±0.4°C |
| Sampling | 1000 Hz | 750 Hz | 1000 Hz | 1000 Hz |
| Isolation | 2500V | 2200V | 2500V | 2500V |
| Firmware | JTAG+USB | JTAG | JTAG+USB | JTAG |
| Conformal | Standard | Standard | Standard | Standard |
| Diag. | Predictive health | Advanced | Predictive health | Advanced+ |
| MTBF | 295k hrs | 290k hrs | 300k hrs | 280k hrs |
Selection
| Scenario | Choice |
|---|---|
| Existing 1B1D install | Keep if acceptable; spares limited. |
| New EGT system | Use DS3800HMPJ (flagship, ±0.03% accuracy) or DS3800HMPJ1B1D. |
| Need outputs | Use DS3800HMAC1H1F. |
| TMR | Three identical 1B1D modules. Do not mix revisions. |
| Non-GE | Do not use – VME only. |
Critical Precautions
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Authenticate – Check GE hologram, serial number.
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ESD – Wear grounded wrist strap.
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Backplane – Verify +5V, +15V, -15V before insertion.
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Wiring – Must use TC-grade extension wire. Shielded cable, ground one end only.
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Torque – 0.5-0.6 Nm.
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CJC – Avoid heat sources near terminal block.
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Temp – Keep rack <70°C.
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Warm-up – Allow 30 minutes for CJC stabilization.
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Firmware – Verify Mark V V5.05+ compatibility.
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Sourcing – Authorized GE distributors or certified repair centers only.
Final Summary
The General Electric DS3800HMPJ1B1D is a late-stage HMPJ revision offering flagship-level performance: 20-bit ADC, ±0.035% accuracy, ±0.2°C CJC, 1000Hz sampling, 2500V isolation, and predictive health diagnostics. It is nearly identical to the base DS3800HMPJ (±0.03% accuracy difference). Use for new EGT builds or upgrades where TC-dedicated input is required. For outputs, choose DS3800HMAC1H1F. Source from authorized channels with valid calibration certificates.
A-B 1769-OB16
A-B 1769-IQ32
SIEMENS 6ES7322-1BH01-0AA0
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