Overview

The Yokogawa AAR181-S50 is a TC/RTD input module designed to provide precise and reliable temperature measurement. It supports various thermocouple types and RTDs, making it versatile for a wide range of industrial applications.

Technical Specifications

• Model: AAR181-S50

• Number of Input Channels: 12, isolated

• Input Signal Types:

  • Thermocouples (TC): JIS C1602:1995, IEC584:1995 (Types J, K, E, B, R, S, T, N)
  • Millivolts (mV): -100 to 150 mV, -20 to 80 mV
  • Resistance Temperature Detectors (RTD): JIS C1604:1997, IEC751:1995 (Pt100, 3-wire type)

• Allowable Input Voltage: ±5 V

• Withstanding Voltage: 1500 V AC for 1 minute (between input and system)

• Input Resistance:

  • Power ON: 2 MΩ or larger
  • Power OFF: 2 MΩ or larger

• Accuracy:

  • Thermocouple (TC): ±30 µV
  • Millivolts (mV): ±80 µV (for span -100 to 150 mV), ±30 µV (for span -20 to 80 mV)
  • RTD: ±120 mΩ

• Allowable Total Resistance of Signal Source Plus Wiring: 40 Ω or less (wiring resistance per wire)

• Measurement Current (RTD): 1 mA

• Temperature Drift:

  • Thermocouple (TC): ±30 µV/10 °C
  • Millivolts (mV): ±80 µV/10 °C (for span -100 to 150 mV), ±30 µV/10 °C (for span -20 to 80 mV)
  • RTD: ±120 mΩ/10 °C

• Data Update Period: 1 s

• Burn-Out Detection: All channels can be set together

• Setting: Not available/available (UP/DOWN)

• Detection Time: 60 s

• Maximum Current Consumption: 450 mA (5 V DC)

• Weight: 0.2 kg

• External Connection: Pressure clamp terminal