Rodi help

[eheiser]

new to posting, hope I’m putting this in the right way…. I have an Aquaticlife 4 stage screw in cartilage RODI unit. I have had it for over two years and just used a single tds sensor on the output that whole time. I have recently upgraded to the 3 sensor tds tester, and want to confirm where inline I should install the sensors…First I need to confirm that the order is correct (pretty positive I have that right), I have the sediment, then the carbon block, then the RO, then the DI filter. I have already connected it and put the 1st sensor after the sediment filter, the 2nd sensor after the RO membrane, and the 3rd sensor after the DI filter on the clean water output… is this correct?

 

[lapin]

Purrrrrrr fect

 

[Fish Fan]

Welcome to Reef2Reef!

#WelcometoR2R

Your order of stages is correct

I would do something like one TDS meter after the DI, obviously. I'd do one before the DI (measuring the output of the RO system), and I might put one after the sediment stage. I'm a little nutty, I think I have like 5 TDS sensors my system, probably entirely unnecessary but I had the meters so I used them

I think it's useful to know the TDS of the input water too, but that's often quite steady for many water supplies, others see more variation.

Good luck!

 

[Freenow54]

new to posting, hope I’m putting this in the right way…. I have an Aquaticlife 4 stage screw in cartilage RODI unit. I have had it for over two years and just used a single tds sensor on the output that whole time. I have recently upgraded to the 3 sensor tds tester, and want to confirm where inline I should install the sensors…First I need to confirm that the order is correct (pretty positive I have that right), I have the sediment, then the carbon block, then the RO, then the DI filter. I have already connected it and put the 1st sensor after the sediment filter, the 2nd sensor after the RO membrane, and the 3rd sensor after the DI filter on the clean water output… is this correct?

I had a problem with production AI wanted to know the entering pressure and TDS . I run mine the same as you with just using a single after the Di. I change my filters every 6 Months as a habit . Anyway because of My TDS being 0 after the DI Ai suggested that I remove and clean the check valve . Some people like to know the entering TDS . My water source does not require that so to me everything is Relative

 

[lapin]

production AI

What is production AI?

 

[Freenow54]

What is production AI?

Sorry no period . I had a problem with the amount of water I was producing . I then went to Ai for input

 

[Buckeye Hydro]

To calculate your RO membrane rejection rate (and thereby know when to change your membrane), you need TDS readings after the RO, and somewhere before the RO. So that uses two TDS probes. The third should go after the DI. https://www.buckeyehydro.com/trm1-tri-inline-tds-meter/

Don't like to do the math to calculate the rejection rate? Here you go: https://www.buckeyehydro.com/ldm-100r-dual-probe-rejection-monitor/

Russ