AAR145-S00 Yokogawa RTD/POT Input Module 16-Channel Isolated I/O

Precision Temperature and Resistance Signal Acquisition Module

AAR145-S00 is a high-density industrial input module designed by Yokogawa.

The module supports accurate RTD and potentiometer signal acquisition across 16 isolated channels.

AAR145-S00 integrates stable analog measurement performance with industrial-grade isolation protection.

The design supports process automation systems requiring precise resistance-based signal monitoring.

Engineers use this module for temperature monitoring, actuator feedback, and resistance position measurement.

The isolated channel structure improves signal integrity in electrically noisy environments.

Each channel independently supports RTD or potentiometer configuration.

The module provides reliable long-term measurement stability in continuous industrial operation.

Global PLC Spare HUB's Insight

Yokogawa AAR145 Series modules are widely deployed in critical process automation systems.

The isolated channel design improves operational reliability in multi-signal environments.

Many automation engineers select this module for stable Pt100 temperature acquisition.

The flexible RTD and POT channel configuration simplifies field instrumentation integration.

This module performs effectively in systems requiring continuous analog monitoring accuracy.

Typical compatible equipment includes:

• Distributed Control Systems (DCS)
• Process monitoring cabinets
• Industrial temperature monitoring systems
• Valve position monitoring systems
• Factory automation control panels
• Energy management platforms

Common application scenarios include:

• Boiler temperature monitoring
• Heat exchanger process control
• Tank temperature acquisition
• Industrial resistance feedback systems
• Process actuator position monitoring
• Chemical plant instrumentation systems

Diagnostic capability supports:

• Sensor burnout monitoring
• Signal drift identification
• Input wiring fault analysis
• Resistance measurement validation
• Field instrument troubleshooting

Signal Processing Architecture

Brand	Yokogawa
Model	AAR145-S00
Series	AAR145 RTD/POT Input Module
Input Channels	16 isolated channels
Supported Input Signals	RTD / POT
RTD Standard	JIS Pt100 / IEC751 Pt100
RTD Wiring Type	3-wire type
POT Resistance Range	100 Ω to 10 kΩ
Span Resistance	50% or larger of total resistance
Signal Selection	Individual RTD/POT selection for CH1 to CH16
Allowable Input Voltage	±5 V
Input Resistance	1 MΩ or larger
RTD Accuracy	±150 mΩ
POT Accuracy	±0.2% FS
Measurement Current	RTD: 1 mA
Data Update Period	1 second
Temperature Drift	RTD: ±0.3 Ω / 10°C
POT Temperature Drift	±0.4% / 10°C
Allowable Wiring Resistance	150 Ω or less per wire
Burnout Detection	UP / DOWN selectable
Burnout Detection Time	60 seconds
Withstanding Voltage	500 V AC between input and system
Channel Isolation Voltage	200 V AC for 1 minute
Power Consumption	350 mA at 5 V DC
External Connection	KS8 / AKB335 dedicated cable
Compatible Terminal Boards	MRT / TERT / AER4D
Module Weight	0.3 kg

Configuration Breakdown

• AAR145-S00
  • Base Model Definition
    • AAR145 = RTD/POT Input Module
  • Suffix Configuration
    • S = Standard type
    • 0 = No explosion protection
    • 0 = Basic type

Engineering-Level Functional Advantages

• Independent channel isolation improves signal reliability
• Supports simultaneous mixed RTD and POT signal applications
• Stable low-drift acquisition improves measurement consistency
• Flexible channel configuration simplifies system expansion
• Burnout detection improves maintenance efficiency
• Supports long-distance field wiring resistance tolerance
• Optimized for continuous process monitoring environments

Industrial Integration Recommendations

• Use shielded instrumentation wiring for improved signal stability
• Separate analog wiring from high-voltage power cables
• Verify Pt100 sensor standards before commissioning
• Maintain proper grounding practices during installation
• Check total loop resistance before field startup
• Use compatible Yokogawa terminal boards for stable connectivity

Maintenance and Diagnostic Notes

• Regularly inspect terminal connections for oxidation
• Monitor sensor drift during long-term operation
• Validate burnout detection settings during commissioning
• Inspect field wiring resistance during troubleshooting
• Review channel isolation integrity during preventive maintenance

Packaging Details

• 1 × AAR145-S00 RTD/POT Input Module
• Industrial anti-static protective packaging
• Product identification labeling
• Protective transport materials

Shipping and Warranty Information

• Warranty Coverage: 12 months
• International Shipping: FedEx, UPS, DHL
• Order Processing: Fast dispatch available
• Packaging Method: Secure industrial export packaging

Professional FAQ

• Why are isolated channels important in analog measurement systems?

  Isolation reduces electrical interference between independent field signals.

• What practical issue affects Pt100 measurement accuracy most?

  Excessive wiring resistance often introduces temperature measurement deviation.

• How should engineers choose between RTD and POT input modes?

  Select RTD for temperature sensing and POT for resistance position feedback.

• What commissioning practice improves long-term measurement stability?

  Verify sensor grounding and cable shielding before system startup.

• Which applications benefit most from burnout detection functionality?

  Critical process systems requiring continuous sensor health monitoring.

• Why does low temperature drift matter in process automation?

  It improves measurement consistency during environmental temperature changes.

• What common installation mistake causes unstable readings?

  Routing analog wiring near high-voltage motor cables.

• How can users reduce signal fluctuation in industrial environments?

  Use shielded cables and maintain proper grounding practices.

• What should buyers confirm before selecting this module?

  Verify compatibility with Yokogawa control system architecture and field sensors.

• Why does the module support configurable burnout direction?

  Different process strategies require customized fault response behavior.

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