Results 1 to 16 of 16

Thread: How to properly RECALIBRATE salinity and PH probes.

  1. #1
    New User
    Join Date
    Feb 2018
    Location
    philippines
    Posts
    6

    How to properly RECALIBRATE salinity and PH probes.

    Before, when i set up my apex. i did manual recalibration and the salinity came out way off at 38. but in reality using my refractometer, it was 35.
    but i didnt bother to recalibrate it again until now.
    I just recalibrated both salinity and PH. the salinity now is down to 32 which is off again. and the PH seems kinda off also at 7.5

    i placed the calibration fluids in the sump for 30 minutes. enabled temp compensation 2.2. i calibrated in sump with the packet floating in the sump.
    what did i do wrong?

    so what i did was.
    1. took the salinity probe. rinsed it in rodi. and then i followed the procedure on the apex.
    I also did the same thing with the PH.

    also another question. when i dipped the 7.00 solution. do i straight dip it in the 10.01 solution? or should i rinse it first with rodi.
    also. i see a little brown algae on the sensor part of the probe. do i clean it? or it doesnt matter

  2. #2
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by mystersync View Post
    Before, when i set up my apex. i did manual recalibration and the salinity came out way off at 38. but in reality using my refractometer, it was 35.
    but i didnt bother to recalibrate it again until now.
    I just recalibrated both salinity and PH. the salinity now is down to 32 which is off again. and the PH seems kinda off also at 7.5

    i placed the calibration fluids in the sump for 30 minutes. enabled temp compensation 2.2. i calibrated in sump with the packet floating in the sump.
    what did i do wrong?

    so what i did was.
    1. took the salinity probe. rinsed it in rodi. and then i followed the procedure on the apex.
    I also did the same thing with the PH.

    also another question. when i dipped the 7.00 solution. do i straight dip it in the 10.01 solution? or should i rinse it first with rodi.
    also. i see a little brown algae on the sensor part of the probe. do i clean it? or it doesnt matter
    Make sure you blot it dry with a paper towel and watch out for bubbles. This applies for both. Make sure you leave 5 minutes to "settle" on the probes.

    Sent from my SM-G965U using Tapatalk

  3. #3
    Frequent Visitor
    Join Date
    Apr 2018
    Location
    Toronto, Canada
    Posts
    102
    Quote Originally Posted by zombie View Post
    Make sure you blot it dry with a paper towel and watch out for bubbles. This applies for both. Make sure you leave 5 minutes to "settle" on the probes.

    Sent from my SM-G965U using Tapatalk
    Do you mean 5 mins during calibration in the fluid? Thanks


    Sent from my iPhone using Tapatalk

  4. #4
    NSI Member
    Join Date
    Oct 2013
    Location
    Oxnard Ca
    Posts
    319
    Yes, give the probe time in both solutions to stabilize, 5 minutes in each should be enough

  5. #5
    New User
    Join Date
    Feb 2018
    Location
    philippines
    Posts
    6
    Quote Originally Posted by zombie View Post
    Make sure you blot it dry with a paper towel and watch out for bubbles. This applies for both. Make sure you leave 5 minutes to "settle" on the probes.

    Sent from my SM-G965U using Tapatalk
    Do i wipe evem the inside part of the probe? The sensor part.

    And also do i rinse the probe in rodi when i transition from 7 solution to 10 solution

  6. #6
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by mystersync View Post
    Do i wipe evem the inside part of the probe? The sensor part.

    And also do i rinse the probe in rodi when i transition from 7 solution to 10 solution
    You need to rinse the cond probe before the dry step and you should rinse the pH probe before the 7.0 step then blot both with a paper towel. You don't need to rinse the pH probe between solutions but it doesn't hurt if you do. Make sure to blot any leftover liquid off the probe before placing into calibration solution.

    Sent from my SM-G965U using Tapatalk

  7. #7
    Regular Vistor
    Join Date
    Dec 2017
    Location
    maine
    Posts
    18
    How did you get to where ever one needs to get to, to set temp compensation value ...thanks

  8. #8
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by perjonas View Post
    How did you get to where ever one needs to get to, to set temp compensation value ...thanks
    It's in the inputs page (thermometer icon)

    Sent from my SM-G965U using Tapatalk

  9. #9
    Regular Vistor
    Join Date
    Dec 2017
    Location
    maine
    Posts
    18
    I've seen some discussions (but can't find them now) about performing a manual calibration of the PH probe with the probe unplugged ... I am trying it now and get readings for both the 7.00 solution and 10.0 steps that settle in at about 709 ... is that what I should be looking for?

  10. #10
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by perjonas View Post
    I've seen some discussions (but can't find them now) about performing a manual calibration of the PH probe with the probe unplugged ... I am trying it now and get readings for both the 7.00 solution and 10.0 steps that settle in at about 709 ... is that what I should be looking for?
    You just unplug it and scroll through next until it's done to "reset" the probe. The actual value shown doesn't matter.

    Sent from my SM-G965U using Tapatalk

  11. #11
    Regular Vistor
    Join Date
    Dec 2017
    Location
    maine
    Posts
    18
    Is it possible that tis setting has gone away with the most recent release of AOS? .. this is what I see after clicking the thermometer icon

    pH_Probe_Config.png

  12. #12
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by perjonas View Post
    Is it possible that tis setting has gone away with the most recent release of AOS? .. this is what I see after clicking the thermometer icon

    pH_Probe_Config.png
    There has never been a setting to reset the probe. You do it by unplugging the probe selecting manual calibration and then just keep clicking next until it's done. Then plug it back in and do a manual or automatic calibration.

    Sent from my SM-G965U using Tapatalk

  13. #13
    Regular Vistor
    Join Date
    Dec 2017
    Location
    maine
    Posts
    18
    Thank you ... my question however was on where to set the temp comp to 2.2 .. I would assume that it would appear on the ph Probe Config page ... I do remember seeing it in the past (I am guessing on this page, but not sure ) .. but clearly is not there now ...perhaps I am in the wrong place? .. thanks

  14. #14
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by perjonas View Post
    Thank you ... my question however was on where to set the temp comp to 2.2 .. I would assume that it would appear on the ph Probe Config page ... I do remember seeing it in the past (I am guessing on this page, but not sure ) .. but clearly is not there now ...perhaps I am in the wrong place? .. thanks
    Temp compensation is strictly enabled or disabled for pH probes. They are much less sensitive to temperature and the algorithm is the same for every tank. Only conductivity is user configurable because it is significantly more sensitive to temperature and the required compensation levels vary depending on tank chemistry.

    Sent from my SM-G965U using Tapatalk

  15. #15
    Frequent Visitor
    Join Date
    Apr 2018
    Location
    Toronto, Canada
    Posts
    102
    Quote Originally Posted by zombie View Post
    Temp compensation is strictly enabled or disabled for pH probes. They are much less sensitive to temperature and the algorithm is the same for every tank. Only conductivity is user configurable because it is significantly more sensitive to temperature and the required compensation levels vary depending on tank chemistry.

    Sent from my SM-G965U using Tapatalk
    Can you remind me if I need temp comp if I keep my tank at 77F?


    Sent from my iPhone using Tapatalk

  16. #16
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by XLOR8T View Post
    Can you remind me if I need temp comp if I keep my tank at 77F?


    Sent from my iPhone using Tapatalk
    You want temp compensation regardless of what temp you keep your tank at.

    Sent from my SM-G965U using Tapatalk

Similar Threads

  1. Help! Salinity probe not working properly?
    By OurCoralReef in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 12
    Last Post: 07-16-2019, 09:24
  2. How do I manually recalibrate my salinity probe?
    By RussC in forum APEX Fusion
    Replies: 1
    Last Post: 05-22-2019, 09:57
  3. Help! how to properly calibrate the salinity and ph probe?
    By mystersync in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 6
    Last Post: 04-12-2018, 16:03
  4. new probes with apex 2016 not operating properly? Thoughts
    By Chicago in forum A2 Apex/ApexEL and A3 Apex Pro/Apex/Apex Jr
    Replies: 2
    Last Post: 12-29-2017, 15:19
  5. Salinity and PH probes off!!!
    By slaychild in forum A2 Apex/ApexEL and A3 Apex Pro/Apex/Apex Jr
    Replies: 7
    Last Post: 04-20-2017, 07:52

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •