DS3800HITA1E1E GE

Parameters

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

• Channels: 4 differential (fixed)

• Resolution: 12-bit ADC

• Accuracy: ±0.08% of full scale (E1 improved over standard ±0.1%)

• Sampling Rate: Up to 1.2kHz per channel (E1 optimized, faster than standard 1kHz)

• Scan Rate: 0.8ms per channel (E1 optimized)

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

• Filtering: Programmable low-pass filter with adaptive anti-aliasing (E1 feature)

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

• Power: +5V DC @ 0.9A, +15V DC @ 0.25A (requires both rails)

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

• Temp Range: -15°C to +72°C (extended, enabled by E coating)

• Mounting: 6U VME Eurocard, single-slot

• Diagnostics: Enhanced onboard with per-channel LED status, signal noise detection, sampling integrity monitoring, and calibration alerts (E1 feature)

Advantages & Features

• High-speed sampling (1.2kHz) captures fast-changing signals for real-time turbine protection with improved stability

• E1 firmware offers better accuracy (±0.08%), faster scan (0.8ms), adaptive anti-aliasing filtering, and enhanced diagnostics including sampling integrity monitoring – a significant upgrade over standard A revisions

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

• 4 differential channels provide noise rejection for high-speed signals in turbine environments

• Programmable filtering allows customization for vibration, speed, or pressure signals

• E-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 +72°C) offers more flexibility than B/C variants

• Front-panel LEDs for per-channel status including sampling integrity alerts

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

Application Cases

• Turbine shaft vibration monitoring – high-speed 4–20mA signals from proximity probes in humid environments

• Overspeed detection – dynamic speed signals requiring sub-1ms response times with sampling integrity monitoring

• Dynamic pressure monitoring – fast-changing combustion pressure signals with adaptive filtering

• Thrust position monitoring – high-speed LVDT feedback for axial position in semi-outdoor enclosures

• Retrofit projects upgrading from standard A firmware for better accuracy, speed, isolation, and environmental protection

Competitor Comparison

• vs. DS3800HITA (standard A variant): Better accuracy (±0.08% vs. ±0.1%), faster sampling (1.2kHz vs. 1kHz), faster scan (0.8ms vs. 1ms), higher isolation (2500V vs. 1500V), E1 diagnostics, E coating, and wider temp range – significant upgrade

• vs. DS3800HITA1A1A (A1/A variant): Substantial improvements in accuracy, speed, isolation, diagnostics, and coating

• vs. DS3800HSCB (high-speed analog): Similar high-speed capability; HITA1E1E offers improved accuracy and E coating, but may have different channel configuration

• vs. DS3800HIMA1C1D (standard analog C1/D): HITA offers much higher sampling rate (1.2kHz vs. 60ms/16Hz) – HITA is for dynamic signals, HIMA for steady-state monitoring

• vs. ABB TB711 : ABB offers higher resolution (14-bit), but HITA1E1E offers higher sampling rate (1.2kHz vs. typically 100Hz on ABB), higher isolation (2500V vs. 1500V), and E coating

• vs. Siemens 7MH410 : Siemens offers HART protocol support, but GE HITA offers higher-speed sampling and E-grade environmental protection

• vs. Woodward 8440-2015 : Woodward offers more flexible configuration, but GE HITA provides higher-speed capability and E coating

• vs. Bently Nevada 3500/42 : Bently is vibration-dedicated with specialized processing; HITA is a general-purpose high-speed analog input that can accept vibration signals but lacks specialized vibration processing

Selection Suggestions

• Critical: Confirm required sampling rate – HITA1E1E supports up to 1.2kHz; ensure this meets your dynamic signal requirements

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

• Assess channel count – 4 differential channels may be sufficient for vibration/speed monitoring

• Evaluate if E1’s sampling integrity monitoring and adaptive filtering are beneficial – particularly valuable for critical protection applications

• Determine whether differential wiring is needed for your sensors (4 differential channels fixed)

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

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

• For critical protection 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: High-speed sampling (1.2kHz) generates significant data – ensure the backplane and processor can handle the data throughput

• Critical: Use shielded twisted-pair cables for all analog inputs to avoid EMI – high-speed signals are particularly susceptible to noise; E1’s adaptive filtering helps but is not a substitute for good wiring practices

• Critical: Programmable filtering must be set correctly to avoid aliasing – consult the turbine control logic requirements

• Ensure field power supply (+24V DC) for loop-powered transmitters is stable (if used)

• E1 firmware offers adaptive anti-aliasing – configure jumpers correctly for your signal type and frequency range

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

• Allow 30–45 minute warm-up before calibration (E coating affects thermal equilibrium)

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

• Periodically verify channel calibration every 1 year (high-speed applications may require more frequent verification)

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

• If replacing a similar high-speed board, verify pinout compatibility – HITA may differ from HSCB or other high-speed series in wiring assignments

• E coating may make component-level repairs difficult – consider board replacement instead of repair