RODI Unit Reading

[TheSeas]

Hi quick question, I recently purchased a BRS 4 stage RODI unit. In viewing the TDS in and out I am reading 1 in and 1 out. This is after flushing the waste line, using for over 2hrs and checking the senor probes. Is this common or is there something wrong with the unit. I contacted BRS and they stated it is fine. I appreciate your thoughts.

 

[Uncle99]

1 out after DI stage would be normal.
1 in, (from source) would be outstanding, but this number seems off, it should be maybe 100-300ppm TDS out of the tap, down to say 3-10ppm after RO, and 0-1ppm after DI.

 

[PeterC99]

I live in lower NY near NYC and my TDS in is 36.

 

[KStatefan]

If you are getting 1 TDS in to the di resin there is no reason it should not be 0 TDS out. That is assuming the TDS probes are before and after the DI.

 

[TheSeas]

The probes are before and after. Something is off which is not making me feel comfortable trusting the readings.