DS3800HIMA1C1D GE

Parameters

• Input Type: 4–20mA (default), 0–10V DC, ±10V DC (jumper-configurable)

• Channels: 8 differential (fixed)

• Resolution: 12-bit ADC

• Accuracy: ±0.07% of full scale (improved over B1’s ±0.08%)

• Input Impedance: 250Ω (current) / >1MΩ (voltage)

• Filtering: 50Hz/60Hz noise rejection with adaptive filtering (C1 feature)

• Isolation: 2500V RMS optical isolation (upgraded from 1500V on earlier variants)

• Power: +5V DC @ 0.8A, +15V DC @ 0.2A (requires both rails)

• Scan Rate: 60ms per channel (C1 optimized, faster than B1’s 80ms)

• Coating: Conformal coating (suffix D) – medium-thickness acrylic with improved humidity and mild chemical resistance

• Temp Range: -15°C to +70°C (extended, enabled by D coating)

• Mounting: 6U VME Eurocard, single-slot

• Diagnostics: Enhanced onboard with per-channel LED status, signal noise detection, drift monitoring, and calibration alert (C1 feature)

Advantages & Features

• Versatile input support – accepts 4–20mA, 0–10V, or ±10V signals via jumpers, compatible with most industrial transmitters

• C1 firmware offers improved accuracy (±0.07%), faster scan (60ms), adaptive 50/60Hz filtering, and enhanced diagnostics including drift monitoring – a significant upgrade over B1 and A1

• Higher isolation (2500V) protects against ground loops and transient surges (upgraded from 1500V)

• 8 differential channels provide noise rejection for long cable runs in turbine environments

• D-grade coating provides superior moisture resistance and mild chemical protection – suitable for environments with frequent humidity or light chemical exposure

• Extended temperature range (-15°C to +70°C) offers more flexibility than B variants

• Front-panel LEDs for per-channel status including drift alerts and calibration reminders

• Compatible with Mark IV backplanes and some VIe systems (with adapter)

Application Cases

• Turbine inlet guide vane (IGV) position feedback – 4–20mA from LVDT transmitters requiring high accuracy and drift monitoring

• Fuel gas pressure monitoring – 4–20mA transmitters in gas turbine fuel skids with adaptive noise filtering

• Steam pressure and flow monitoring – for steam turbine throttle and extraction lines in humid environments

• Lube oil pressure and temperature – from standard 4–20mA transmitters on bearing and sump systems with calibration alerts

• Retrofit projects upgrading from A1 or B1 firmware for better accuracy, speed, and environmental protection

Competitor Comparison

• vs. DS3800HIMA1B1B (B1/B variant): Better accuracy (±0.07% vs. ±0.08%), faster scan (60ms vs. 80ms), higher isolation (2500V vs. 1500V), C1 diagnostics, D coating (vs. B), wider temp range (-15°C vs. 0°C) – significant upgrade

• vs. DS3800HIMA1A1B (A1/B variant): Substantial improvements across all parameters

• vs. DS3800HIMA (standard A variant): Significant upgrade in accuracy, speed, isolation, diagnostics, and coating

• vs. DS3800HIMA1C1C (C variant): Same firmware, but D coating offers better moisture resistance than C

• vs. DS3800HSCB (high-speed analog input): HIMA1C1D is optimized for accuracy and diagnostics (60ms); HSCB offers faster scanning for dynamic signals

• vs. ABB TB711 : ABB offers higher resolution (14-bit), but HIMA1C1D offers higher isolation (2500V vs. 1500V), adaptive filtering, and drift monitoring

• vs. Siemens 7MH410 : Siemens offers HART protocol support, but GE offers better isolation and C1 diagnostics

• vs. Woodward 8440-2015 : Similar channel count, but Woodward offers more flexible configuration software; GE offers better environmental protection

• vs. Honeywell 51304638 : Honeywell offers better long-term stability (±0.05%), but GE offers higher isolation and D coating

Selection Suggestions

• Critical: Confirm input signal type (4–20mA, 0–10V, or ±10V) before installation – jumper settings must match your transmitters

• Verify your backplane provides both +5V and +15V – this board requires both rails

• Assess if C1’s drift monitoring and calibration alerts are beneficial – particularly valuable for critical turbine sensors where drift could affect performance

• Evaluate environmental conditions – D coating is suitable for frequent humidity and mild chemical exposure; choose G/H for more demanding conditions

• Order mating front connector (p/n may vary – confirm with GE)

• For critical applications, purchase with a calibration certificate and 12-month warranty

Precautions

• Critical: Do not exceed 30mA or ±30V on input channels – overvoltage may damage the ADC and isolation circuits

• Critical: Use shielded twisted-pair cables for all analog inputs to avoid EMI – C1’s adaptive filtering helps but is not a substitute for good wiring practices

• Critical: C1 drift monitoring requires a stable reference – ensure the board is properly warmed up (30–45 minutes) before relying on diagnostics

• Ensure field power supply (+24V DC) for 2-wire transmitters is stable and within specifications (if loop-powered)

• C1 firmware offers adaptive 50/60Hz filtering – configure jumpers correctly for your region’s line frequency

• D coating provides good protection but is not suitable for direct salt spray, heavy chemical exposure, or continuous condensation – upgrade to G/H for those conditions

• Store in ESD-safe packaging – edge connector is static-sensitive

• Periodically verify channel calibration every 2 years against a certified reference

• Do not hot-swap – Mark IV backplanes require power-off for insertion/removal

• If replacing a similar board, confirm pinout compatibility – HIMA series may differ from HFP or HHR series in wiring assignments