Features; 4-20Ma Supported Transmitters; Type 2 - MCi -MA-0088 User Manual

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

2 FEATURES

4 4-20mA input channels.
12mm Coin type battery socket.
Real Time Clock.
o IC DS1307.
o 32kHz clock.
Arduino reset button.
4-20mA standards supported.
o Type 2.
o Type 3.
o Type 4.
9-12 VDC power supply.
4 Jumpers for type 3 transmitters.
Power supply connector for sensors.

3 4-20mA SUPPORTED TRANSMITTERS

The Arduino 4-20mA + RTC Shield supports transmitters which work with type 2, 3
and 4 current loops.

3.1 Type 2

Type 2 transmitters are energized by the current loop, where the supply voltage is
included in the receptor. The transmitter is floating and the ground is in the receptor.
Luis Thayer Ojeda 0115 Of. 402 ▪ Santiago, Chile ▪ Tel. +56 2 3339579 ▪ info@olimex.cl
Fig. 1: Type 2 transmitter connection schematic.
www.olimex.cl
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