Busted tds meter?

WhitePanther93 · Nov 29, 2022

After noticing my tds had started to rise and that my rodi resin was depleting I did the obvious thing: I replaced my resin. After that i noticed that I was still seeing tds in the out. So seeing that my sediment cartridge was looking pretty nasty I just decided to get one of brs’ media replacement kits.(This one) and even after all that I’m still seeing tds that is vastly greater than the in tds reading can anyone help me? I’ve been putting off my weekly water changes because of this.

tmccaff · Nov 30, 2022

You using TDS meter on RO unit or handheld? TDS Meter on RO unit do fail especially in time.

WhitePanther93 · Nov 30, 2022

tmccaff said:
You using TDS meter on RO unit or handheld? TDS Meter on RO unit do fail especially in time.

I’m using one on the ro unit itself

Rskiba · Nov 30, 2022

The sensor may have rotated. Water flow must be "between" the posts on the probe. Think "field goal". Might be worth checking as having the probe rotated 90 degrees will cause false readings.

WhitePanther93 · Nov 30, 2022

Rskiba said:
The sensor may have rotated. Water flow must be "between" the posts on the probe. Think "field goal". Might be worth checking as having the probe rotated 90 degrees will cause false readings.

Okay so after checking the sensor and making sure water was flowing through the poles, the out tds went quickly from 100+ tds to 48ish tds. From there it’s been slowly going down and is now at 33 but is lowering very slowly. (The in tds is 12) .is it safe to say I have a busted meter/sensor if it’s not zero later?

Rskiba · Nov 30, 2022

As water runs through the meter it may keep going down. I get that sometimes on my unit on the IN side of the unit, but not the out.

Was the sensor rotated?

WhitePanther93 · Nov 30, 2022

Rskiba said:
As water runs through the meter it may keep going down. I get that sometimes on my unit on the IN side of the unit, but not the out.

Was the sensor rotated?

To be honest I’m not sure if it was. But now I’m sure it’s not.

WhitePanther93 · Nov 30, 2022

So a couple hours later and the tds out is still stuck at 30

Rskiba · Nov 30, 2022

Probably gone bad....unfortunately.

WhitePanther93 · Nov 30, 2022

Okay so I went to my lfs and got a hand held tds and it’s reading 36ish…. So it’s not a problem with my reader so much as it is something with the filter itself

Rskiba · Nov 30, 2022

Bummer but glad you caught the issue. You said you did replace all the filters? How old is are the existing filters you are replacing? Just curious.

WhitePanther93 · Nov 30, 2022

Old enough that the last sediment filter is brown all the way throughout. The ro resin was about 2/3 of the way orange. And I’m pretty sure the carbon block is supposed to out live the both of them so I couldn’t giv you an estimate on its remaining life.

WhitePanther93 · Nov 30, 2022

Ok so I dismantled my ordi filter entirely and reinstalled everything. I even did a fresh refill of my di resin using the one from the kit I ordered from brs. That seems to have done the trick, as I am now reading 0 tds out. I’m starting to think that I purchased the wrong di resin before