Type 3; Type 4 - MCi -MA-0088 User Manual

Arduino 4-20 mA + RTC Shield User's Manual

3.2 Type 3

Type 3 transmitters have 3 wires powered by the source voltage in them. In this
case the transmitter is the power source for the current loop. The transmitter common
is connected to the common of the receptor.

3.3 Type 4

Type 4 transmitters have 4 wires powered by the source voltage in them. The
transmitter powers the current loop and the receptor acts a floating load.
Luis Thayer Ojeda 0115 Of. 402 ▪ Santiago, Chile ▪ Tel. +56 2 3339579 ▪ info@olimex.cl
Fig. 2: Type 3 transmitter connection schematic.
Fig. 3: Type 4 transmitter connection schematic.
www.olimex.cl
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