Following on from emails please see screen shots attached
Attachment 10177
Attachment 10178
Printable View
Following on from emails please see screen shots attached
Attachment 10177
Attachment 10178
ok, we see in the screenshot "alarm: range"
this means the KHD started to measure but it took too long to come to a reasonable measurement value
when does this happen?
a) reagent doesn't reach the KHD - check if reagent is pumped into the KHD during measuring and that there is no air pumped
b) dosing calibration values are incorrect, in this case KHD is not able to calculate correct amounts resp. a correct KH value - check if calibration and settings of all 3 KHD involved pumps are correct
post screenshots of these 3 pumps here
Reagent has no air in the tube and is reaching the Doser ok.
I will calibrate the Doser and try again.
Thanks
probe and waste pump shall have about 36 ... 37ml/min at speed 3
reagent pump approx. 4.5ml/min at speed 0
Pump 1 is 34ml/min
Pump 2 is 4.3ml/min
Pump 3 is 33ml/min
Still getting 0,0 and alarm error.
flow seem all a bit low to me, but this is not the reason for this behaviour
which speeds are selected? please post screenshots of all 3 pumps
another thought: you did calibrate the pH-electrode, and the calibration was fine at the end? you used fluids pH 4 and pH 7 in the right order?
and please deactivate "alarm monitoring" until we found the reason for your issue, maybe there is also another message displayed in the status field
Attachment 10185Attachment 10186Attachment 10187
Yes PH probe was calibrated using the 4 and 7 solutionss that were supplied
filling level of reagent pump (2) must be at least 50ml to start measurement, screenshot shows zero
pump 2 filling level is still zero
and again:
and please deactivate "alarm monitoring" until we found the reason for your issue, maybe there is also another message displayed in the status field
Still the same, seems to go through the motions of a test but never gives a reading?
Hm, it becomes difficult.
1. please deactivate alarm monitoring (uncheck both options)
2. tell me what the status field shows AFTER this deactivation
3. show me a NEW screenshot of pump 2
after this is done:
describe please exactly the measurement cycle
is it only getting sample water and after that it is IMMEDIATELY drained trough the waste line
or is there a measurement between? how long? getting sample water should take about 2-3 minutes, draining 2-3 minutes, and the actual measurement process between about 5-10 minutes
if there is no measurement then
a) there arrives no sample water
b) the pH electrode calibration was not OK
BTW: the pH-electrode is plugged in the right BNC port, not in the doser BNC, right?
better also post a few pictures of your entire setup, front and rear so I can see all tubes and wiring
Sorry I took screen print quicker than the GHL software could refresh.Attachment 10192Attachment 10193
Attachment 10193
Status ok, no alarms ?
then there is only one thing left: the pH-measurement is not correct
there are a few reasons I could think of, I already mentioned them above
our support team will continue to take care of you tomorrow morning
As I also have low values on some pumps, I tell myself that maybe the containers we use to measure the amount of water pump during calibration are not accurate or reliable. Maybe that it would be necessary to provide a reliable and calibratoed containers with Doser2 that guarantees the value of calibrations. As before, KH Director, it was not very important, but with the KH Director, it's very.Quote:
Originally Posted by Paullewis
I use a precise letter scale (0.1g resolution) for calibrationQuote:
Originally Posted by itsmorefun
Ok, thank, just bought this: http://www.steinbergsystems.de/de/sbs-lw-50010-ws/Quote:
Originally Posted by Matthias
Matthias,
I am having the exact same issue with my KH Director. I have been talking to Vinny@GHL USA about it and just saw this post.
Here is my issue forwarded from my email to Vinny....
Vinny,
Ok, so after getting home and testing things out. Pump 1 on the Dosing unit is no longer seizing up randomly. It’s working fine now.
Here are some pictures of my settings for pumps 5, 6, and 7, for the KHD. Whether I run the KHD as a “timed” measurement or a measurement which I choose the same result happens. The chamber on the KHD flushes, then drains, then fills again… instead of adding KHD reagent here it discharges the chamber and finishes. I don’t get any error codes or messages and the status during the whole process is “Measuring.” Once it finishes discharging the status goes back to “OK.”
Attachment 10222Attachment 10223Attachment 10224Attachment 10225
I went back over the instruction manual and I verified everything was correct. All of my dosing pumps, especially the KHD Dosing pump, are Firmware 1.28. I’m stumped.
Quote:
Originally Posted by reeffever
In my haste and exhaustion the last few days I failed to notice that the pH probe was actually connected to the dosing unit. OMG! Bonehead moment!
I am going to connect it correctly and calibrate and see what happens.