Description

The EMERSON 1C31194G03 is a 16-channel analog input(AI)module engineered for the Emerson Ovation distributed control system(DCS),delivering high-precision acquisition of 4–20 mA signals from field transmitters.Designed for mission-critical applications in power generation and heavy process industries,it features per-channel diagnostics,optional HART communication support,and compliance with functional safety standards—making it a cornerstone of modern,intelligent plant automation.

Application Scenarios

At a 1,200 MW coal-fired power station undergoing digital transformation,engineers needed to replace aging Bailey INFI 90 analog cards that lacked diagnostic visibility,causing unplanned outages due to undetected sensor drift.They deployed the EMERSON 1C31194G03 across boiler feedwater,main steam,and flue gas desulfurization(FGD)systems.Within weeks,the module’s built-in open-wire detection flagged a failing pressure transmitter on the economizer inlet—before it caused a cascade trip.Simultaneously,its HART-enabled channels fed real-time device health data into Emerson’s AMS Device Manager,enabling predictive calibration scheduling.The 1C31194G03 didn’t just restore signal integrity—it turned passive sensors into active assets,reducing maintenance costs by 22%in the first year.

Parameter

Main Parameters Value/Description

Product Model EMERSON 1C31194G03

Manufacturer Emerson Automation Solutions(Ovation Platform)

Product Category 16-Channel Analog Input(AI)Module for Ovation DCS

Input Signal Type 4–20 mA(sourcing or sinking,loop-powered compatible)

Accuracy±0.05%of full scale(typical at 25°C)

Resolution 16-bit ADC per channel

HART Support Optional per-channel HART 5/6/7 communication(configurable)

Diagnostic Features Open-wire,overrange,underrange,HART comms fault,module self-test

Update Rate≤100 ms for all 16 channels

Installation Platform Ovation Compact Node or Legacy I/O Cabinet(with 1C31199 baseplate)

Operating Temperature 0°C to+60°C(industrial grade)

Safety Certification Compliant with IEC 61508 up to SIL 2(in redundant configurations)

Technical Principles and Innovative Values

True Per-Channel Intelligence:Unlike legacy AI cards that treat inputs as“dumb”signals,the EMERSON 1C31194G03 embeds independent signal conditioning and diagnostic logic on every channel—detecting open circuits or abnormal current levels in real time.

Seamless HART Integration:When enabled,each channel can extract digital diagnostics(e.g.,PV,SV,device status)from smart transmitters without external multiplexers,feeding data directly into Ovation Logic Builder and AMS Suite.

High Density,Low Footprint:Packing 16 isolated inputs into a single-width I/O slot maximizes cabinet space efficiency—critical in retrofit projects with limited panel room.

Robust Isolation Architecture:Each channel is galvanically isolated from the backplane and adjacent channels,preventing ground loops and ensuring signal integrity in electrically noisy environments like turbine halls.

Backward Compatibility Engineered In:The 1C31194G03 fits directly into existing Ovation I/O nodes originally designed for older modules(e.g.,1C31117G01),enabling drop-in upgrades without rewiring or cabinet modifications.

Application Cases and Industry Value

In a North American nuclear auxiliary feedwater system upgrade,regulatory requirements demanded enhanced diagnostic coverage for all safety-related analog signals.The plant selected the EMERSON 1C31194G03 due to its certified SIL 2 capability and comprehensive failure mode reporting.During a routine surveillance test,the module detected a subtle 0.8%zero-shift in a level transmitter—well within analog tolerance but flagged by HART as“Sensor Trim Required.”This early warning prevented a potential spurious actuation of the emergency core cooling system.Plant engineers reported that the 1C31194G03’s integration with Ovation’s alarm management reduced nuisance alerts by 35%,while improving operator situational awareness during transients.

Related Product Combination Solutions

EMERSON 1C31199G01:Baseplate required for installing the 1C31194G03 in Ovation Compact Nodes.

EMERSON 1B30027H01:Field terminal assembly with fused terminals,commonly paired with 1C31194G03 for safe field wiring.

EMERSON 1C31204G01:16-channel analog output(AO)module for complementary control loops.

EMERSON 1C31187G01:Digital input(DI)module often co-deployed in the same I/O node for interlock signals.

EMERSON 1C31207G01:Redundant I/O node chassis enabling SIL 2-compliant architectures with dual 1C31194G03 cards.

EMERSON AMS Device Manager:Software platform that leverages HART data from the 1C31194G03 for asset health analytics.

EMERSON Ovation Logic Builder:Configuration tool used to enable HART,set scaling,and map diagnostics to alarms.

Rosemount 3051S:Smart pressure transmitter frequently connected to 1C31194G03,forming a fully diagnostic-aware measurement loop.

Installation,Maintenance,and Full-Cycle Support

Installing the EMERSON 1C31194G03 is straightforward:insert it into a compatible Ovation I/O node baseplate(e.g.,1C31199G01),connect field wiring via the associated terminal block(1B30027H01),and configure channels using Ovation Configuration Studio or Logic Builder.HART functionality is activated per channel through software—no hardware changes needed.The module supports hot removal in non-redundant systems,minimizing downtime during replacements.

For maintenance,the 1C31194G03 continuously logs diagnostic events(e.g.,“Channel 5:Open Wire”)that appear as standard Ovation alarms,enabling rapid root-cause analysis.Its conformal-coated PCB withstands humidity and chemical exposure common in FGD scrubbers or coastal plants.Every unit we supply undergoes rigorous validation:16-channel accuracy sweep,HART handshake simulation,open-wire injection,and thermal stress cycling.Backed by a 24-month warranty and direct access to Ovation-certified engineers,our EMERSON 1C31194G03 ensures your analog signals remain not just accurate—but intelligent.

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