4/6CH Universal Fully Isolated Analog Input


AP794 Analog Input Module accepts a wide range of different sensor types in six fully isolated input channels and communicates using the Modbus RTU serial protocol. AP794 can measure voltage as well as current, and it supports thermocouples, 3 Wire RTD, and 4- to 20-mA loops. It is a high density universal multi-channel module and needs only four input terminals per channel. The AP794 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
    • Thermocouple Types:
      • B, E, J, K, L, N, R, S, T, Wre3-25, Wre5-26, XA, XK
    • 3-Wire RTD Types
      • PT10, PT20, PT50, PT100, PT200, PT250, PT300, PT400, T500, PT1000, PTJ100, Cu10, Cu20, Cu50, Cu100, Ni120, rp21, rp23, 50M, 50P, 100M, 100P
    • Impedance Input
      • 0~200 Ω , 0~1K Ω , 0~5K Ω
    • Current Input
      • ±2mA, ±5mA, 0~20mA, 4~20mA, 24mA, ±40mA
    • Voltage Input Types
      • ±125mV, ±250mV, ±1V, ±5V, 0~5V, 1~5V, ±10V, 0~10V


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

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