8/12CH Current/Voltage/Thermocouple Fully Isolated Analog Input


AP791 Analog Input Module measures Industrial Voltages, Current and Thermocouples in twelve fully isolated input channels and communicates using the Modbus RTU serial protocol. The AP791 is specially designed for high noise and harsh industrial environments and has an ability to properly eliminate floating noise over input signals and 50Hz/60Hz harmonics


  • Universal Inputs
    • DC Voltage, Current, RTD and Thermocouples
  • Isolation
    • Over 250V Channel to Channel and 2500V Group Isolation
  • ADC Unit
    • Simultaneous 50-Hz and 60-Hz Rejection
    • Ultra Low Measurement Drift 10 ppm/°C (max)
    • Internal Temperature Sensor
    • Extended Fault Detection Circuits
    • Self Offset and System Calibration


    • Protection
      • Fault, Over Voltage, Surge and ESD Protected Inputs
    • Sampling Rate
      • 24-Bit Measurement with more than 100 Samples/S
  • Input Signal Types
    • Current Input
      • ±2mA, ±5mA, 0~20mA, 4~20mA, 24mA, ±40mA
    • Voltage Input Types
      • ±125mV, ±250mV, ±1V, ±5V, 0~5V, 1~5V, ±10V, 0~10V
    • Thermocouple Types:
      • B, E, J, K, L, N, R, S, T, Wre3-25, Wre5-26, XA, XK


    • Dataloggers
    • Signal Recorders
    • General Input Module for PLC, DCS  and SCADA I/O Expansion
    • Sensor Transducers and Transmitters: Temperature, Pressure, Strain, Flow

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