How to get the default ph caibration settings back ?

[lmolenmaker]

Hello all smart people of this community,

A newbe here. A couple of days I received my RA+ and got it to work. Created a few rules with the wizard and so far it works as planned.

However, as a little kid, I started to press buttons here and there and I messed up my ph calibration settings. My probe reads now 3.27, which is of course way off.

I read somewhere that the ph probe comes calibrated by default, which would be quite accurate.

So my question is: 'how do I get those settings back?"

Please help.

Thank you in advance.

Leslie

[lnevo]

Run the memory initialization pde again that should reset the default value and i would not say that it is accurate...maybe more so than 3.27

[lmolenmaker]

Dear Lee,

Thank you for your quick response, much appreciated.

It worked, reading is now 7.65, a bit low as my tank should be 8.2.

May I ask you another question?

I've read that people make their own calibration fluid with Borax, which gives a 9.2 value. In order to calibrate, do you need two solutions or can you calibrate with one only. If so, how should one do that?

Thanks.

Leslie

[lnevo]

You need two values for the calibration. That's why 7 and 10 are recommended values. Theoretically the 9.2 could be used, but you'd still need a low threshold to compare to.