Specifications

• Manufacturer: Emerson (Westinghouse)

• Model: 3A99989H13

• Type: Isolated Analog Input Module (AI)

• System Compatibility: Ovation, WDPF DCS

• Channels: 8 isolated differential inputs

• Signal Ranges:

  • Voltage: 0–5 VDC, 1–5 VDC, ±2.5 VDC

  • Current: 4–20 mA, 0–20 mA

• Resolution: 12‑bit (13‑bit for bipolar)

• Isolation: 1000 Vrms channel‑to‑ground

• Input Impedance: Voltage >10 MΩ; Current ≈250 Ω

• Conversion Time: <5 ms/channel

• Accuracy: ±0.1% FS at 25 °C

• Operating Temperature: 0 °C to 60 °C

• Power: 24 VDC ±10%, ~8 W

• Features: Hot‑swap, LED status indicators, EMI suppression

• Weight: Approx. 1.1 kg

Key Features

• 8‑channel high‑accuracy data acquisition for process variables.

• 1000 Vrms isolation eliminates ground loops and electrical noise.

• Multi‑range input supports standard 4–20 mA / 1–5 VDC transmitters.

• Hot‑swap enables online replacement without system shutdown.

• LED diagnostics for power, communication, and channel fault indication.

• Industrial‑grade construction for long‑term reliability in harsh environments.

Applications

• Power plants: Boiler/turbine temperature, pressure, flow, level monitoring.

• Petrochemical: Refinery and chemical process parameter acquisition.

• Water treatment: Pump pressure, flow, and level measurement.

• Legacy system maintenance: Spare part for Ovation/WDPF DCS upgrades and replacements.

Related Part Numbers

• 3A99863G14: 8‑channel AI (Q‑line)

• 3A99862G14: 8‑channel AI (QAW variant)

• 3A99860G04: 8‑channel AI (legacy slot)

Notes

• Legacy OEM module: Supplied as a direct replacement for installed Ovation/WDPF systems.

• For new projects, Emerson recommends modern Ovation I/O modules.

• Documentation: Datasheet and installation manual available upon request.