I have this pen, and had a problem in the beginning but have now got the pen dialed in.
how to set. dont take shortcuts
- rinse pen thoroughly under water and let sit in a the 4.01 solution for a 16 hrs to a full day. the electrode has to soak completely.
- next you want to calibrate.
- in pH mode hold mode button until it says CAL
- rinse the pen off using a small amount of the 7.01 solution.
-once rinsed, let the pen now sit in the 7.01 solution - should take no more than a minute
---once the pen says use 4.01 , you rinse the pen with the 4.01 solution
- once rinsed let the pen sit in the 4.01 solution and it should within a minute be calibrated.
hold the mode button down in ppm mode until it says CONV then, set the CONV to .7 and the BETA to 1.9
-- you now want to calibrate the PPM and TDS.
- use solution HI 70442 tds 1500
- to calibrate switch to ppm on the meter and hold mode until it says CAL. then place in solution and it will be set.
*** I dont use the μS mode. just pH and ppm.
YOUR GOOD TO GO.
after measuring your water, you want to rinse with tap water. keep a few drops of solution 4.01 in the cap at all times. It works as a great storage solution. YOU DO NOT WANT THE ELECTRODE TO DRY!
