Specifications

• Number of Input Channels: 8, isolated

• Input Signal:

  • TC: IEC 60584-1 (ITS-90): Types B (*3), E, J, K, N, R, S, T
  • mV: -100 to 150 mV, -50 to 75 mV
  • RTD: 2, 3, and 4-wire types
    • IEC 60751 (ITS-90): Pt50, Pt100, Pt200, Pt500, Pt1000
    • DIN 43760-1987: Ni100, Ni200
    • Minco: Ni120
  • POT: 3-wire type, 0 to 10 kΩ
  • Switching Input Signals: RTD/POT can be selected individually for CH1 to CH8.

• Allowable Input Voltage: ±5 V for both models

• Withstanding Voltage: 1500 V AC for both models

• Input Resistance (Power ON/OFF): 1 MΩ or larger for both models

• Accuracy (at 23°C):

  • TC: ±40 µV
  • mV: ±80 µV
  • RTD (Pt50, Pt100, Ni100, Ni200, Ni120): ±150 mΩ
  • RTD (Pt200): ±300 mΩ
  • RTD (Pt500): ±600 mΩ
  • RTD (Pt1000): ±1.2 Ω
  • POT: ±2 Ω

• Allowable Total Resistance of Signal Source Plus Wiring: 50 Ω per load (*4)

• Effect of Allowable Signal Source Resistance (1000 Ω): Not applicable

• Reference Junction Compensation Accuracy: ±1°C (*5)(*6) (AST143 only)

• Measurement Current: 150 µA (ASR133 only)

• Temperature Drift (Per 10°C Change):

  • TC: ±125 µV/10°C
  • mV: ±250 µV/10°C
  • RTD (Pt50, Pt100, Ni100, Ni200, Ni120): ±325 mΩ/10°C
  • RTD (Pt200): ±650 mΩ/10°C
  • RTD (Pt500): ±1.3 Ω/10°C
  • RTD (Pt1000): ±2.6 Ω/10°C
  • POT: ±5.2 Ω/10°C

• Data Update Period: 1 second or less for both models

• Burn-out Detection: All channels can be set together. Settings available: Not available/available (UP/DOWN)

• Maximum Current Consumption:

  • 150 mA (5 V DC)
  • 80 mA (24 V DC) for AST143
  • 60 mA (24 V DC) for ASR133

• Weight: Approximately 0.30 kg for both models

• External Connection: Pressure clamp terminal (ATSR3)

• Barrier Type: Isolated interface for both models