Hello everybody here,
I have flow meter, and it has single 4-20 ma. I want to connect this flow meter to RTU. This mean to using one signal repeater which has 4-20 ma as output (2 port) and at least on relay with contact (NO&NC) ( digital output) my questions are:
1- could anyone help me and give me the website of this repeater
2- if i get this repeater, how can i using the relays contacts as accumulator counter for this flow meter to able to send the counter’s information to RTU.
I do not think there's such a device anywhere. You must use something else and implement it. I guess you are in China. There are PLCs that can easily perform the functions you want and more. I know one chinese brand that has the modules you need to make this work. Please e-mail me to email@example.com for more information.
If I understand your question correctly, I think you want to take a 4-20mA flow signal, and then convert it into a pulse signal (dry contact), which you will then use for totalization, is that right?
If so, then yes -- this is possible. I wrote an article about how to accomplish that very task. Here's the link:
I hope this is helpful!
P.S. What flow are you measuring (e.g. water, petroleum, gas,...)? And what is the flow meter that you are presently using? Please share the details.