Only a very few engineers have a TDS meter and even less know much about what they measure.
They usually use them to demonstrate how clean a system is after power flushing.
But the reading they give is a very specific measurement and needs to be carefully interpreted.
I have lost track of what you are now trying to do or prove.
There is the added problem that you think the engineer removed a seal from the sensor. But if that was the case then I would expect it to leak significantly with no seal at all.
You should have let an independent engineer make that inspection, firstly because you should not have been opening the case and secondly because he would have been an independent witness.
Tony
They usually use them to demonstrate how clean a system is after power flushing.
But the reading they give is a very specific measurement and needs to be carefully interpreted.
I have lost track of what you are now trying to do or prove.
There is the added problem that you think the engineer removed a seal from the sensor. But if that was the case then I would expect it to leak significantly with no seal at all.
You should have let an independent engineer make that inspection, firstly because you should not have been opening the case and secondly because he would have been an independent witness.
Tony