RKE Trying to calibrate PH Probe

[superclown]

I am not sure if the ph Probe is bad or if im doing something wrong or both which is very possible with me :lol2:

anyway. I hit the down arrow on interface until ph shows up on screen. I hit the center button it says calibrate. I hit that option then I change the numbers to read out 07.01 then I opened the ph packet thats 7.01 (floated in tank for bout 30 minutes for both of these ph packets to get to exact temp)

Then I let the ph probe sit in the packet for about 15 minutes check the data once it seems stable and staying around a specific number I hit next then I change the target to 10.01 and do the same as described in previous step.

I have tried this twice now and the ph probe still reads 27.64 for a few seconds than it will all of the sudden jump to some crazy number like -64.32 then back to 28.24 etc..etc..

Am I doing something wrong or is my ph probe likely bad. I just got this used from a member but they told me when I purchased it that they didn't ever use the ph probe so they didn't know if it worked or not

 

[acroholic]

Sounds like a bad probe to me. I think you are calibrating it correctly. Does your SL1 or SL2 module have the same firmware the head unit has? Not sure if that would make a difference, but usually, if a controller does not calibrate the probe is bad, IME.

 

[superclown]

Yah all the firmware is up to date so im leaning towards a bad probe

 

[fener103]

I think I am in the same boat. I picked up a SL1 and a new PH probe and tried to install last weekend on my system (RKL). I could not get either probe to calibrate and I think I read on the DA boards that they were having issues with their lastest update.

 

[fncracing]

DA released new info on the probes as far as calibration and replacement procedures

 

[acroholic]

fncracing;602295 wrote: DA released new info on the probes as far as calibration and replacement procedures

http://www.forum.digitalaquatics.com/viewtopic.php?f=15&t=7044&p=33242#p33242">http://www.forum.digitalaquatics.com/viewtopic.php?f=15&t=7044&p=33242#p33242</a>[/QUOTE]

Actually, that is for their Salinity Probe, not Ph. But it is good information all the same!

 

[gmpolan]

Honestly, i had the same problem once i added a sl2 but i figured out simply by reconfiguring the set up, it actually solved my probe issues....

 

[superclown]

gmpolan;602384 wrote: Honestly, i had the same problem once i added a sl2 but i figured out simply by reconfiguring the set up, it actually solved my probe issues....

could you please explain to me what was done differently that "fixed" your problem would be greatly appreciated thanks

 

[gmpolan]

well my issue was my sl2 wasnt calibrating the probe or the probe was bad. I essentially moved the sl2 to the end of my circuit and then compared the readings to my probe on the sl1. The sl2 was sent off previously to DA and they said it was working fine so i figured it had to be the probe. But somehow, by moving the sl2, the probe starting reading fine. Ill prob order a new one here regardless but thats what worked for me...