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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: *Mr Tumble on June 09, 2008, 05:22:39 pm

Title: Yes, the TDS reading is odd
Post by: *Mr Tumble on June 09, 2008, 05:22:39 pm

Out of the DI vessel I'm reading 001, with an insitu meter,
out of the other side of the brass connection with a handheld meter its reading 003
(which really means out of the vessel it's 003?)
at the tank it's going in at 004 (not much difference).

Which meter should I trust?  The handheld or the inline?

Title: Re: Yes, the TDS reading is odd
Post by: jeff1 on June 09, 2008, 05:24:15 pm

Hey Mr Tumble  ;)

Not 100% sure but I have heard that the in-line isn't 100% reliable?

Title: Re: Yes, the TDS reading is odd
Post by: windowwashers on June 09, 2008, 05:45:18 pm

Quote from: Mr Tumble on June 09, 2008, 05:22:39 pm

Out of the DI vessel I'm reading 001, with an insitu meter,
out of the other side of the brass connection with a handheld meter its reading 003
(which really means out of the vessel it's 003?)
at the tank it's going in at 004 (not much difference).

Which meter should I trust?  The handheld or the inline?

I would say the handheld, I would also say to get 2 handhelds for testing say once a week using both, inlines from what I know are not that good at being acurate but as a visual aide I guess helps out. Better to be safe than spotty


Ian

Title: Re: Yes, the TDS reading is odd
Post by: AuRavelling79 on June 09, 2008, 06:08:28 pm

It's all below 010 so I wouldn't worry.

Title: Re: Yes, the TDS reading is odd
Post by: michael papworth on June 09, 2008, 06:15:26 pm

Better to be safe than spotty LOVL Ha Hah Ha

Brilliantly funny. Still titering several minutes later!!!

Title: Re: Yes, the TDS reading is odd
Post by: alanwilson on June 09, 2008, 06:16:19 pm

try recalibrating the handheld - they are more reliable than the inline meters bt do need to be recalibrated from time to time

Title: Re: Yes, the TDS reading is odd
Post by: Dean Aspects on June 09, 2008, 06:18:23 pm

How do you recalibrate a hand held TDS meter?

Dean

Title: Re: Yes, the TDS reading is odd
Post by: jaykie on June 09, 2008, 06:21:20 pm

whats the benefits of checking the tds in different places as i only check it coming out of tank.

Chris

Title: Re: Yes, the TDS reading is odd
Post by: alanwilson on June 09, 2008, 06:25:23 pm

hi dean - to recalibrate you need calibration soln (ro-man) and you dip into the soln and adjust the little screw on the back of the meter until it reads what it says on the botttle (normally 342ppm)