DS3800HMPG GE

Description

Technical Parameters

Advantages and Key Features

• Thermocouple-Dedicated Design – Optimized exclusively for TC signals; no unnecessary circuitry, improving reliability and CJC accuracy.

• 18-Bit ADC – Superior resolution and accuracy over 16-bit HMPF series.

• Superior CJC Accuracy – ±0.3°C, matching the best universal modules.

• N-Type Support – Added support for N-type thermocouples (not available in HMPF).

• Faster Sampling – Up to 500 Hz, five times faster than HMPF (100 Hz).

• Higher Isolation – 2000V, improved over HMPF’s 1500V.

• Field-Upgradeable Firmware – JTAG port for updates (not available in most HMPF variants).

• Enhanced Diagnostics – Comprehensive per-channel health monitoring.

• Hot-Swap Capable – IEEE 1101.11 compliant.

• ITS-90 Linearization – Full standard tables including N-type.

Application Fields

Comparison with HMPF Series (GE Internal)

Competitor Comparison:

Key Differentiator: The General Electric DS3800HMPG is the most advanced TC-dedicated module in the Speedtronic lineup, offering 18-bit resolution, 500 Hz sampling, 2000V isolation, and field-upgradeable firmware—all while maintaining native VME compatibility that competitors cannot match.

Selection Recommendations

Critical Precautions

Pre-Installation

• Authenticate module – Check GE hologram, serial number traceability, NIST calibration certificate.

• Verify firmware – Read via JTAG; confirm Mark V compatibility (V5.03+ recommended).

• Inspect connectors – Check P1/P2 for bent pins or corrosion.

• Check conformal coating – If specified, verify uniform coating.

Installation

• ESD protection – Wear grounded wrist strap; handle by edges only.

• Backplane voltage – Verify +5V (±2%), +15V (±1.5%), -15V (±1.5%) before insertion.

• Insertion – Align guides, apply even pressure, tighten retaining screws to 0.4-0.6 Nm. Never force.

• Power-on – Insert before applying backplane power.

Field Wiring (Critical for TC Accuracy)

• Cable – Must use thermocouple-grade extension wire matching TC type. Copper wire introduces significant errors.

• Shielding – Belden 8760 or equivalent shielded twisted-pair. Connect shield to module shield terminal; ground only at module end.

• Separation – 30cm from AC power; 60cm from VFD cables; cross at 90° if unavoidable.

• Torque – 0.5-0.6 Nm (4.4-5.3 lb-in); strip length 7-8mm.

Firmware & Configuration

• Field-upgradeable – Use JTAG programmer; follow GE procedure carefully.

• Channel config – Use Mark V Toolbox to select TC type for each channel.

• Open-circuit config – Select upscale or downscale drive for burnout detection.

• Rate-of-change – Configure thresholds for predictive maintenance.

• Calibration – Factory valid for 5 years; use precision calibrator (e.g., Fluke 754) for field verification.

Environmental

• CJC stability – Avoid heat sources or air vents near terminal block.

• Operating temp – -40°C to +85°C; keep rack <70°C.

• Warm-up – Allow 30 minutes for CJC stabilization.

• Humidity – 5-95% RH non-condensing.

• Vibration – 5g (10-500Hz) per IEC 60068-2-6.

• Clearance – Maintain 10mm airflow clearance.

Procurement

• Authentic sourcing – Buy from GE-authorized distributors or certified repair centers.

• Refurbished units – Request NIST calibration certificate and 1-year warranty.

• Storage – ESD-safe packaging with desiccant; shelf life 10 years at 25°C ±10°C, <60% RH.

Safety & Compliance

• Not SIL-rated – Trip logic implemented at Mark V CPU via 2-out-of-3 voting.

• CE/FCC – Complies with EN 61326-1 and FCC Part 15 Class A.

• ATEX – Not certified; mount in purge-pressurized enclosure for hazardous areas.

Final Summary

The General Electric DS3800HMPG is the most advanced dedicated thermocouple input module in the GE Speedtronic lineup, offering 18-bit resolution, 500 Hz sampling, ±0.3°C CJC accuracy, 2000V isolation, N-type support, and field-upgradeable firmware. It significantly outperforms the older HMPF series and matches or exceeds the TC measurement capabilities of competing universal modules from Siemens, ABB, and Rockwell—while maintaining native VME compatibility that no competitor can offer.

For new builds or upgrades requiring dedicated thermocouple monitoring (especially EGT in gas turbines), the General Electric DS3800HMPG is the recommended choice. If analog outputs are also required, consider the DS3800HMAC1G1E or DS3800HMAC1H1F universal modules. For the absolute highest accuracy and speed, the DS3800HMAC1H1F offers ±0.04% and 1000Hz but at the cost of universal (non-TC-dedicated) design. Source the General Electric DS3800HMPG from authorized channels, verify firmware compatibility, use proper thermocouple wiring, and follow strict ESD and CJC stability practices to achieve >240,000 hours MTBF.

Siemens 6ES7134-4NB01-0AB0
A-B 1794-OM16
A-B 1794-IM16