Temperature Calibration/Adjustment

<a href=showthread.php?s=&postid=12639064#post12639064 target=_blank>Originally posted</a> by badazztealcobra
Anyone else checked theirs by any chance ???

I just checked mine....

Fluke IR thermometer - 78.3
Fluke handheld - 78.6
Profilux temp sensor - 78.5

I dont think it can get any closer than that. :D
Click to expand...


That looks perfect.... unless you used one to calibrate the others LOL.
 
Matthias Gross said:
you will find 4 numbers in this file:
the ADC1 and ADC2 (compare to your values which are displayed in ProfiLuxControl under Calibration Data), also 200 and 300 (20°C and 30°C)
Click to expand...

Hello,
I just buy a profilux 3.1NEx. every thing is fine except the temperature which is wrong: I think my temperature reference is 1.5°C wrong.
I understand and was able to change the parameters for temperature calibration by editing my sensor parameters file and sending it back to my profilux.
I just wanted to know if you see a way to find the right parameters to set?
I thought I should calibrate it for instance with some water with Ice (so it should be at 0°C, and also with some water which is around 37°C to being able to use a medical digital thermometer which is probably accurate?
I also compare your parameters, my parameters when I receive the profilux and also another profilux (of a friend which is working correctly and accurately), and they are not the same. So as we can at any time bye a new probe, I wanted to understand, how it's possible to having valid calibration parameters independently of the probe we want to use?
Thanks for your help.
 
If the unit is new the probe will be reading new they are lab set in the factory, if an older unit then we do not know what the original client has done with the unit before.

By doing a factory reset you reset the ADC values, so please do that first.

If still not sure if correct then measure it against a known quality mercury thermometer, you can then change the calibration slope in the temperature settings until it reads what you want it to. However you are then in charge of its accuracy not the manufacturer.
 
AQD_ottawa said:
If the unit is new the probe will be reading new they are lab set in the factory, if an older unit then we do not know what the original client has done with the unit before.

By doing a factory reset you reset the ADC values, so please do that first.

If still not sure if correct then measure it against a known quality mercury thermometer, you can then change the calibration slope in the temperature settings until it reads what you want it to. However you are then in charge of its accuracy not the manufacturer.
Click to expand...

Ok & thanks for the fast answer. Yes the unit is new. Ok I'll do the factory rest.
Just wanted to know what is reseted?
- All sensors? I suppose yes.
- All settings like level sensors, socket functions,...?

So I suppose I have to recalibrate all probes (except temperature) and set again every thing? Or I can reload the saved settings except temperature probe parameters?
 
It will reset everything including ADC values in the Temperature settings.

Unless you have proven reason to no trust the temperature (never had a case yet) then I would leave the settings alone.
 
AQD_ottawa said:
It will reset everything including ADC values in the Temperature settings.

Unless you have proven reason to no trust the temperature (never had a case yet) then I would leave the settings alone.
Click to expand...

I just do the factory rest. It cleaned all my settings but the sensors calibration parameters do not change.
My Profilux is the 3.1N Ex which is running under the 612 firmware version.
And I do the factory reset from the GHL control Center Program.
For seeing the sensors calibration parameters, I see them in Profilux Control center (version 606) as I can not see them in GHL Control center.
Please let me know what to do.
Thanks for your support.
 
then the ADC values before are the same as the factory, then it is up to you to trust the sensor value or change in user calibration in the software.
 
AQD_ottawa said:
then the ADC values before are the same as the factory, then it is up to you to trust the sensor value or change in user calibration in the software.
Click to expand...

I think this is not true because even Ph probes parameters do not change. So I think the calibration parameters are not affected by the factory settings reset.
But for my température issue, I used the value adjustment. then I checked with an accurate thermometer that the value and the slope are both correct.
Thanks for your help.
I also checked on two other profilux and I found that the slope (calculated by me) is not the same on them. but my slope is the same than one of them. So it should be correct.
thanks
 
I think you missunderstand

we are talking ADC values not the calibration values that are stored when you calibrate a pH probe this is different.

We had a client this week he for some reason deleted his ADC values in his temperature settings, as ADC is a factory stored setting it is restored on factory reset, but yes of course any pH calibration which is different will not be
 
another question

another question

Hello,
As I had detailed answers, I had another question which is not linked to this topic.
But asking it here:
on my profilux, I have a SD card soket and I put a SD card in it. But didn't see any effect any where.
Can you explain what it is for and how to use it?
Thanks
 
Just got my ghl set up and now working on hooking up the probes to find a gross error in temperature readings. The ghl is showing 73.3 f and the tank temp taken with an IR thermometer and that temp is 79 degrees. How can this be?
 
Hi Steve,

Putting it simply it cant be the GHL probes are set for laboratory use it would never get passed the final testing at the factory, it would fail the bench test.

So we can support clients effectively can you please post support questions on the support forum, otherwise we end up chasing posts all over the web ;) We will carry on support over there or email me.

www.aquariumcomputer.com

Sticky
http://www.reefcentral.com/forums/showthread.php?t=2116715

thanks so much in advance.
 
Sounds good!!! Moving over there in a few minutes. I didn't want to email you Michael as I thought you were still on vacation and didn't want to bother you again.
 
The GHL probe was correct! I went out and bought a digital meat thermometer and it was .5 degree off from the ghl. Now I have the correct temp in the tank and my steaks will be cooked perfectly every time!!!! [emoji3]
 
GHL's new firmware should include a meat thermometer ;) reef keeping and NY strip loin kind of go hand in hand do they not? :)
 
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