KH Director

WWIII · Mar 29, 2018

I think the last measurement goes off time zone correction see here mine is set to (UTC -5), but mine still shows an hour later than what it should. I think because of daylight savings.

I've tried every setting I can think of to try and get the times to match up to the actual time and the last recorded measurement to display correctly. No luck yet. Even before the time change for daylight savings, it was off by a couple minutes. I guess from the summer time change deal?

WWIII · Mar 29, 2018

I tried that too @Ditto and couldn't get it to work correctly. I did UTC -6 and change in 1 day. No luck. At least before daylight savings it was only off a couple minutes, but sure seems more difficult than it should be.

Ditto · Mar 29, 2018

Buddha I looked at your profile your UTC should be -6 for central time for sure, are you in Illinois? That should at least get you within 1 hour regaurdless in a day.

Maybe GHL will chime in why we a show off 1 hour hehe.

dragon99 · Mar 29, 2018

Buddah001 said:

You should change it to -5 instead of +6 for central daylight time.

WWIII · Mar 29, 2018

Ditto said:
Buddha I looked at your profile your UTC should be -6 for central time for sure. That should at least get you within 1 hour regaurdless in a day.

Good catch! And I also know that GHL is aware of the 1 hour issue since daylight savings. Maybe after they adress that it will work again like it was before. Although I'm still not sure what the summer time and number of days to change is for exactly?

Buddah001 · Mar 29, 2018

I’m not sure why it was at +6
Thanks for the catch

Buddah001 · Mar 29, 2018

That did it thanks for the help @Ditto @WWIII and @dragon99
Still off by an hour though but better than 11hrs

scuzy · Mar 29, 2018

I just swapped out the tube from dost to kh with the thicker wall silicone on the reagent line keys see if the readings are good and no bubble.

WWIII · Mar 30, 2018

What do ya know... All my times are correct this morning...

Ditto · Mar 30, 2018

They had another update last night and it looks like it now been corrected in that update!!

version .018.2 Fixed Localization Error was updated 16 hours ago.

scuzy · Mar 30, 2018

Thicker tubing so far no bubbles will wait a few more days.

ZaneTer · Apr 1, 2018

How is it going for everyone with the bubble issue? I never had a problem with it personally but I hope its going well for all of you now.

Buddah001 · Apr 1, 2018

I have bubbles forming. Waiting on some different tubing to be delivered and will inform of my findings

scuzy · Apr 1, 2018

Haven't seen a bubble in awhile

Dawsokj1988 · Apr 5, 2018

ZaneTer said:
How is it going for everyone with the bubble issue? I never had a problem with it personally but I hope its going well for all of you now.

I switched mine to measure twice a day with 100 ML sample and switched to a glass bottle for the reagent. So far, the readings have been consistent. They're consistently .5 dkh higher than what they should be, but they're consistent. I haven't switched the tubing yet because I want to let this play out. I can deal with a consistent .5 dkh increase (by using the % modifier in the khd settings.) I still have the air gaps, but I believe the 100 ML sample size helps negate them a bit. Just a theory.

scuzy · Apr 5, 2018

There thicker tube has helped with bubbles.

dragon99 · Apr 5, 2018

11 days bubble free, consistent readings (at least the ones I see). Sure wish the SA Doser/KH had a graph so I knew. @Marco@GHLUSA , any ETA on that feature?

mrramsey · Apr 6, 2018

I think the bubble issue that I have been reading about would seem to be more of a “poor” fit of the stock tubing to the barb fitting. The wall thickness would have less to do with it. The ID of the tubing vs the OD of the fitting would likely be the issue. One of the parts could be marginally off. The “thicker” walled tube is probably a smaller diameter coupled with the flexibility to stretch easily to create a tighter seal. The easiest way to prove that is to take the stock tube and fitting and subject it to a low pressure test of say 5psi. Let it sit for 24 hours and see if the 5 psi is retained. Alternatively I suppose someone could simply prime the pump with clean RO water and let it sit. If bubbles form then that rules out the reagent being the issue.

Don’t own one yet so I can’t perform the tests. Unless the folks at GHL want to donate one [emoji16]

Buddah001 · Apr 6, 2018

I have installed new thicker silicone tubing. 3mm is x 6mm od and i still am having the bubble issue.

I even bought 5mm id x 8mm od for my 3 part and changed out the KH and there are bubbles forming in this line from my dosing container to doser to tank. I can see the bubbles forming in the line.

I think I am going to look for some chemical resistant tubing because this is driving me nuts.

I dont think silicone tubing is the right thing to use