How to read data analog from 4-20mA port?

[abgran]

Hi. I have already bought 6 units of KC868-A4 model on Ali Express Order ID: 8154057463938467. There are 2 ports for 4-20mA. I have a TDS sensor output 4-20mA range 0-4400 us/ms. 

Got 2 question.

1) Can you give a source code how to read from the 4-20mA port? 
2) If my sensor signal 4-20mA to 0-5v is using 250ohm right? Can you show the diagram how to connect. Thanks.

My TDS sensor have a 3 wire (+,  - & Signal (S1)).

       

[admin]

read 4-20mA or 0-5v sensor, use same arduino code, here is demo source code of ADC:
https://www.kincony.com/forum/showthread.php?tid=1644

if you using KC868-A4, you not need to convert 4-20mA to 0-5v signal, just series connection with your sensor and KC868-A4.
such as : power supply + --> your 4-20mA sensor --> output to KC868-A4's analog input+ --> KC868-A4's analog input- --> power supply GND

[abgran]

read 4-20mA or 0-5v sensor, use same arduino code, here is demo source code of ADC:
https://www.kincony.com/forum/showthread.php?tid=1644

if you using KC868-A4, you not need to convert 4-20mA to 0-5v signal, just series connection with your sensor and KC868-A4.
such as : power supply + --> your 4-20mA sensor --> output to KC868-A4's analog input+ --> KC868-A4's analog input- --> power supply GND

Can you draw the Diagram on KC868-A4? The wiring. Just simple draw. with 3 wire.

[admin]

here is diagram:
   

[abgran]

here is diagram:

Thanks for helping.

[admin]

you are welcome.

[Damienlannoy]

Hi, I would like to plug Siemens mag5000 transmitter flow sensor on kc868-a4. This sensor have + and - 4-20ma output (powered by transmitter). Can you tell me how to plug it on it please ?

I think - to AGND and + to A1 but not sure.

regard


Damien

   

[admin]

Hi, I would like to plug Siemens mag5000 transmitter flow sensor on kc868-a4. This sensor have + and - 4-20ma output (powered by transmitter). Can you tell me how to plug it on it please ?

I think - to AGND and + to A1 but not sure.

regard


Damien

up thread's photo also is suitable for you.
Power+ --> sensor's + --> senor's -  --> KC868-A4's A1
Power - --> AGND