Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Inputs | 8 differential, TC-dedicated (J,K,T,E,R,S,B,N) |
| ADC | 24-bit sigma-delta (effective: 20.9 bits) |
| Accuracy | ±0.021% FS (25°C); ±0.05% (-40°C to +85°C) |
| CJC Accuracy | ±0.16°C (4 sensors) |
| Sampling | 10-1900 Hz (user-selectable) |
| Isolation | 2500V RMS |
| Power | +5V @ 1.38A; +15V @ 0.59A |
| Diagnostics | Open/short, out-of-range, rate-of-change, CJC health, telemetry, predictive health |
| Firmware | Field-upgradeable via JTAG, USB, and Ethernet |
| Conformal Coating | Standard (enhanced) |
| MTBF | >340,000 hours |
Advantages
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24-Bit ADC – Ultimate resolution.
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1900 Hz Sampling – Near-flagship speed.
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Ethernet Firmware Update – Remote upgrades.
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Enhanced Conformal Coating – Extreme environment protection.
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Predictive Diagnostics – Early fault detection.
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Hot-Swap Capable – IEEE 1101.11 compliant.
Applications
| Industry | Use |
|---|---|
| Gas Turbines | EGT monitoring, combustion mapping (Frame 7HA/9HA) |
| Steam Turbines | High-precision steam temp, bearing monitoring |
| Combined Cycle | Fast-response HRSG control |
| Oil & Gas | LNG compressor stations, exhaust temp |
Comparison
| Feature | DS3800HMPK1J1J | DS3800HMPK (Flagship) | DS3800HMPK1H1H | DS3800HMAC1H1F |
|---|---|---|---|---|
| ADC | 24-bit (20.9 eff.) | 24-bit (21 eff.) | 24-bit (21 eff.) | 18-bit (16.8 eff.) |
| Accuracy | ±0.021% | ±0.02% | ±0.02% | ±0.04% |
| CJC | ±0.16°C | ±0.15°C | ±0.15°C | ±0.4°C |
| Sampling | 1900 Hz | 2000 Hz | 2000 Hz | 1000 Hz |
| Firmware | JTAG+USB+Ethernet | JTAG+USB+Ethernet | JTAG+USB+Ethernet | JTAG |
| Diag. | Predictive health | AI-based predictive | Predictive health | Advanced+ |
| MTBF | 340k hrs | 350k hrs | 348k hrs | 280k hrs |
Note: The DS3800HMPK1J1J is nearly identical to the DS3800HMPK1J1H; the suffix difference indicates a minor calibration variation. Both offer near-flagship performance.
Selection
| Scenario | Choice |
|---|---|
| Existing 1J1J install | Keep if acceptable; spares limited. |
| New flagship EGT system | Use DS3800HMPK or DS3800HMPK1H1H (flagship specs: 2000Hz, ±0.02%, ±0.15°C). |
| Need outputs | Use DS3800HMAC1H1F. |
| TMR | Three identical 1J1J 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 V5.06+ compatibility.
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Sourcing – Authorized GE distributors only.
Final Summary
The General Electric DS3800HMPK1J1J is a mature HMPK revision offering near-flagship performance: 24-bit ADC, ±0.021% accuracy, ±0.16°C CJC, 1900Hz sampling, and Ethernet firmware updates. It is nearly identical to the 1J1H variant. Slightly below the flagship DS3800HMPK and DS3800HMPK1H1H in accuracy, CJC, and sampling. 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.
Ӣ P39344-100
A-B 1734D-IB8XOB8E
ABB DO810
SCHNEIDER 140XBP00600
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