3A99990H02
Description
Specifications
Manufacturer: Emerson (Westinghouse)
Model: 3A99990H02
Type: High‑Resolution Isolated Analog Input Module (AI)
System Compatibility: Ovation, WDPF DCS
Channels: 8 isolated differential inputs
Signal Ranges:
Voltage: ±10 VDC, 0–10 VDC, 1–5 VDC
Current: 4–20 mA, 0–20 mA
Resolution: 16‑bit (higher than 3A99989H13)
Isolation: 1000 Vrms channel‑to‑ground
Input Impedance: Voltage >10 MΩ; Current ≈250 Ω
Conversion Time: <4 ms/channel
Accuracy: ±0.05% FS at 25 °C
Operating Temperature: 0 °C to 60 °C
Power: 24 VDC ±10%, ~9 W
Features: Hot‑swap, LED status indicators, HART compatibility (optional)
Weight: Approx. 1.2 kg
Key Features
16‑bit high resolution for ultra‑precise process monitoring.
1000 Vrms galvanic isolation eliminates ground loops and electrical noise.
Multi‑range input supports standard 4–20 mA / 1–5 VDC / ±10 VDC transmitters.
Hot‑swap capability allows online replacement without system shutdown.
LED diagnostics for power, communication, and channel fault indication.
HART compatibility (optional) for smart device integration.
Industrial‑grade construction for long‑term reliability in harsh environments.
Applications
Power plants: High‑precision temperature, pressure, flow, level monitoring for boilers and turbines.
Petrochemical: Refinery and chemical process parameter acquisition requiring high accuracy.
Water treatment: Precise pump pressure, flow, and level measurement.
Legacy system maintenance: Spare part for Ovation/WDPF DCS upgrades and replacements.
Related Part Numbers
3A99989H13: 8‑channel 12‑bit AI module (standard resolution)
3A99863G14: 8‑channel AI (Q‑line)
3A99862G14: 8‑channel AI (QAW variant)
Notes
Legacy OEM module: Supplied as a direct replacement for installed Ovation/WDPF systems.
Higher precision than 3A99989H13: 16‑bit vs. 12‑bit resolution.
For new projects, Emerson recommends modern Ovation I/O modules.
Documentation: Datasheet and installation manual available upon request.
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