DS3800HMPF1F1F GE

Technical Parameters

Advantages and Key Features

• Thermocouple-Dedicated Design – Optimized for TC signals only; no unnecessary circuitry for RTD/mA/V, improving reliability and CJC accuracy.

• Improved CJC Accuracy – ±0.4°C, better than earlier 1E revisions (±0.5°C) and significantly better than 1A/1B/1C variants.

• Higher Effective Resolution – 15-bit effective (improved over 14.5-bit in 1E revisions).

• Faster Sampling – Up to 100 Hz (user-selectable), double the 50 Hz limit of 1E revisions.

• Enhanced Diagnostics – Adds rate-of-change detection for predictive maintenance.

• Open-Circuit Detection – Reliable burnout detection with upscale drive.

• Hot-Swap Capable – IEEE 1101.11 compliant.

• ITS-90 Linearization – Full thermocouple standard tables.

Application Fields

Comparison with Other GE Revisions

Competitor Comparison:

Key Differentiator: The General Electric DS3800HMPF1F1F is the most advanced factory-programmed TC-dedicated module before the base HMPF standardization. It offers the best balance of accuracy, CJC performance, and diagnostics among the non-field-upgradeable HMPF variants.

Selection Recommendations

Critical Precautions

Pre-Installation

• Authenticate module – Check GE hologram labels; verify serial number traceability.

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

• Firmware note – Factory-programmed; cannot be field-updated.

• Verify calibration – Check calibration date; valid for 5 years.

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.

Field Wiring (Critical for TC Accuracy)

• Cable – Must use thermocouple-grade extension wire matching the TC type (e.g., Type K extension for Type K). Copper wire introduces significant measurement errors.

• Shielding – Belden 8760 or equivalent shielded twisted-pair. Connect shield to module shield terminal; ground only at module end (not both ends).

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

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

Environmental

• CJC stability – Avoid mounting near heat sources, air vents, or fans that create temperature gradients across the terminal block. This directly affects CJC accuracy.

• Operating temp – -40°C to +85°C; maintain rack temperature <70°C for long-term reliability.

• Warm-up – Allow 30 minutes for CJC thermal stabilization after power-up before relying on critical measurements.

• Humidity – 5-95% RH non-condensing.

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

• Clearance – Maintain 10mm airflow clearance.

Firmware & Configuration

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

• Open-circuit config – Select upscale or downscale drive for burnout detection (typically upscale for EGT).

• Rate-of-change alarm – Configure threshold for predictive maintenance alerts.

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

Procurement

• Authentic sourcing – The General Electric DS3800HMPF1F1F is obsolete; source only from GE-authorized distributors or certified GE repair centers.

• Refurbished units – Request NIST-traceable CJC calibration certificate and minimum 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 (industrial immunity) and FCC Part 15 Class A.

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

Final Summary

The General Electric DS3800HMPF1F1F is one of the most advanced factory-programmed dedicated thermocouple input modules in the HMPF series. It offers significant improvements over early 1A/1B/1C/1E revisions, including ±0.4°C CJC accuracy, 100 Hz sampling, 15-bit effective resolution, and rate-of-change diagnostics. It is nearly identical in performance to the base DS3800HMPF (±0.08% accuracy vs. ±0.10%, ±0.3°C CJC vs. ±0.4°C), with the main difference being factory calibration and firmware revision.

For new installations or upgrades where outputs are not required, the General Electric DS3800HMPF1F1F is a solid choice for TC-dedicated EGT monitoring. However, for the highest performance (18-bit, 1000Hz, 2500V isolation, field-upgradeable firmware, and standard conformal coating), the DS3800HMAC1H1F is the superior option if universal inputs (including outputs) are acceptable.

Only consider the General Electric DS3800HMPF1F1F for maintaining existing installations with identical spares or for applications where TC-dedicated design and proven reliability are prioritized over the latest features. Source refurbished units exclusively from certified GE repair centers with valid calibration certificates. Ensure compatibility with your Mark V system—consult GE documentation before deployment.