KH Director triton control modes.

[Bagirka]

One last question before I pack it up... unfortunately I can't understand what you mean in places ...sorry(((

Will this work?

Set value 7.5 dkh

A the moment normal daily dosage is 46ml of Triton

Volume change, 10ml
Limit for raise KH, 10ml
Limit for lower KH 10ml

Lets say reading is 7 dkh

so will it dose the usual 46ml a day....plus the 10ml extra (spreading out automatically within the day until the set value is reached to 7.5)
Making sure that Limit for raise KH, 10ml will not exceed more than by 10ml


now...

Lets say my test value come back 8dkh
with these settings will it stop dosing completely until DKH falls down or it will it dose 36ml (46ml minus the 10ml) until it's ready to dose the 46 again?

Please don't hit me)))

[Bagirka]

I found someone who could help me and explain this part.... after testing it seems to be working (would be nice to see the add on dosing adjustments .... in the dosing chart...as "add on done" ...)
Thank you for your assistance.

[Vinny]

Glad it makes more sense now.

[Bagirka]

That's it! I'm done with this!!!
Stupid director measured 1.5dkh during the night (real measurement at 11 pm yesterday was 7.6) .... why this? ....well...because it wanted to, also there was NO alarm although I had it switched on high 7.7 - low 7.3!

There was no reason for that and more over with these settings
Volume change, 10ml
Limit for raise KH, 10ml
Limit for lower KH 10ml

it dumped in 78ml of my triton during the night, why?!!! If it had to do maximum of 10ml on top of my 46 daily!!!!

I'm very disappointed not just with this item but actually with the Extremely poor and unprofessional assistance.
I asked 1 straight question MANY times and got answers on equations I NEVER asked in a language which nobody around me in ENGLAND could understand!
Believe me ...this is what most GHL users think of costumer service!

[Vinny]

We're sorry to hear you feel that way about our service.

Please post a screenshot of your exact KHD settings to get a better idea if this was a result of the KHD or incorrectly configured settings.

If you do a manual test, what is the KH result?

[Bagirka]

I'm not near the KH director to do a picture atm, sorry

Manual tests most of the week and last night where the same
last night at 11 pm hanna 7.8....so 0.2 - 0.3 (MORE than KH director)...KH director 7.6 I did this measurement manually before I went to bed

Todays test
2am (can't see the measurements as I could not see the recordings, running the director and dosing separately as SA and the rest as slaves to it)
8am Hanna 7.8 (KH director 1.5dkh)
8.30am Hanna 7.8 (KH director 8.1dkh)
This bothers me that this can be in such swing !!! Please notice the fact that Hanna was way higher than KH director all week, today Director is way ahead, I'm very precise with testing and keeping all equipment extremely clean

I know settings from my head so here it is.

Dosing Triton other method
all 4 channels dose equally 46ml a day 23 times = 2ml per dose
They are spread out dosing every 15 minutes (example pump 1 start 00:00, pump 2 start 00:15, pump 3 00:30.... etc etc)

All this was working fine for 1.5 years with no issues,


KH director settings,

Set value 7.5
Alarm 7.3-7.7

Pump 1 Water sample
Pump 2 Reagent
Pump 3.Waste
Pump 4 EMPTY
Pump 5 Triton 1
Pump 6 Triton 2
Pump 7 Triton 3A
Pump 8 Triton 3B

Volume change, 10ml
Limit for raise KH, 10ml
Limit for lower KH 10ml

Testing 4 times a day
2am
8am
2pm
8pm

What I've noticed that the calibration of the water sample tube needs to be done every few days now, as it changes anywhere from 34ml to 36.8ml per min. I use extremely accurate measurements, with 1ml syringe (and I've checked the value again just in case I've made a mistake...all was correct) Could you please tell me if this is normal and the tube is just expanding "curing" . I never experienced the issue with my dose tubes.

I've recalibrate the pumps many times over and over, they are all correct.
Calibrated probe as well...again all looks fine I compared with my other ph probe on profilux 4 so fine again!

I'm in my tears (I'm a woman so I'm allowed LOL) but this is just awfully all over the place.
Somehow I managed to do the other gadgets so I don't think I'm that incompetent ...however this one is one strange machine.(((

All I want is to go to my holiday soon, without worrying if it will go crazy again

[Bagirka]

New manual measurement
7pm Hanna 7.8dkh - KH director 7.6dkh (as you can see it's going down again and changing places)

[Vinny]

It is common for Hanna checkers and other traditional test kits to show some difference between the KHD and those kits (Hobby grade test standards vs. Lab grade test standards).


There are many more variables to consider when testing with traditional test kits.
The result from a Hanna checker can be greatly skewed from fingerprints, dust, deviation in water sample volume, amount of power added, duration of mixing and sitting before testing, etc.

With that said, a 0.2dkH difference between the checker and KHD is acceptable.

If you dip the KHD probe in pH4 calibration fluid, does the pH reading in the KHD settings page show a pH of 4?
Please also test this with pH7 fluid.
What is the outcome?

FYI
The pH probe from the P4 and probe from the KHD are NOT the same. The pH probe for the KHD is a modified pH probe made specifically for this purpose.