Simon asks
Hi David Please --- is there provision on the MMi202 Board of a voltage supply to run the 0-20 mA current loop. I have a PT100 transmitter/amplifier which will run from 10 to 30v and is powered by the current loop itself and would like to be able to use this thing for temperature sensing for control. many thanks cheers
Simon, most 4-20 transmitters can be regarded at 2-wire devices.
Simply connect it between +24 and the SPLat input.
+24V
--------o-----------------------------o-------------
| |
| .----|-----.
| | + |
.----|------. | |
| V+ | | 4-20 Tx |
| | | |
| Ain ------------------- |
| | | |
| | '----------'
| |
| SPLat |
| |
| 0V |
'----|------'
|
|
------o------------------------------------------
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