Signal Conditioning: Pressure, Flow, Temperature, and Concentration

Standard pneumatic transmitter outputs are 3-15 psig and standard electrical signals are 4-20 mA. Current is favored over voltage for industrial use electrical signals because it is less susceptible to transmission line signal corruption. Analog electrical signals for micro-controllers (e.g. Arduino) or micro-processors (e.g. Raspberry Pi) are typically 0-5 VDC or 0-3.3 VDC. Some transmitters provide a Modbus interface to allow digital TCP/IP or Serial communication.

[garretthorton]

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