Inline Tds Meter And Handheld

[Tim A]

So, I just changed the batteries on my RO/DI unit and now when I turn it on it says my Final output of TDS bounces around the meter from like mind 40’s to upper 80’s. Almost like a wiring thing, when I use my handheld TDS meter it says 0. This happened when I changed my batteries and also just changed my DI Resin. Should I go by my handheld and assume it is zero? Or is there a way to recalibrate the inline TDS meter? I have a spectrapure RODI

 

[Josh]

kind of a dumb question but are the batteries in right? Polarity might mess with it. Otherwise id be inclined to trust the handheld if you just changed your Resin

 

[Tim A]

yes, batteries are correct. Put in the same way last ones were removed. I may try and remove the probes and give them a good cleaning. Maybe in vinegar?

 

[msobon]

Are you able to get a reading above 0 in other types of water on handheld? also inline has tendency to to get buildup overtime that will throw off the reading, flush the electrode socket and electrode, I assume it plugs into a T joint.