inline TDS meter duel..instilation procedure ?

just want to hook-up this to my new ro/di unit and not positive were and even how to use it properly..it lets you know when the filters need replacing but some help would be great

 

my spectrapure cpdsi unit had the tds input is on the inlet side of the di cartrage and the output is on the outlet side of the di cartrage the line that is the water you use

 

Yes, it is as simple as that. The connections should have come with the unit. If you have trouble figuring it all out though call "the filter guys" and Jim will take time with you and help, he's a great guy.

http://www.thefilterguys.biz/

 

which colour tube is the incoming/outcoming ? thats where im getting mixed-up even though it should be simple im sure lol
i have this sysrem
75 GPD RO/DI 4 Stage Economy System - English

 

The OUT goes in the blue line on the last canister to the right in the photo and the IN goes in the line on the back side of that same canister. With that you gte the RO only TDS with the IN and the RO/DI or final TDS with the OUT probe.