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Analog inputs

Analog inputs (AI) are for reading DC voltage or DC current. The actual range is 0-10V or 0-20mA, which is an industrial standard. The inputs are suitable for reading values from analog sensors such as temperature sensors, pressure meters, tensometers etc.

On Neuron and Axon, the analog inputs can also measure resistance, making the AIs suitable for measuring temperature from resistive thermometers such as Pt100, Pt500, Pt1000 and Ni1000.

The functionality of AIs on Neuron and Axon is different on Group 1 and Group 2/3 or Neuron extensions.

On Group 1, the analog input is only capable of measuring DC voltage in a range of 0-10V and DC current in a range of 0-20mA.

On Group 2 and 3 and on the Neuron extensions, the analog input is capable of:

  • measuring 0-10V DC
  • measuring 0-2.5V DC with higher precision
  • measuring of 0-20mA DC
  • measuring of resistance 0-100kOhm via 2-wire method
  • measuring of resistance 0-2kOhm via more precise 3-wire method

The UniPi 1.1 has two analog inputs and they are only capable of measuring voltage in a range of 0-10V DC.