X-TREME by Harlequin

Originally Posted by nim75sg

Make sure you calibrate the probe prior to placing it the CR with pH7.0 and 10.0 buffer solution otherwise get wrong readings.

Also, what is the recommended pH for the CR media?

For ARM, the recommended pH is 7.0 but I set the pH controller at pH6.75 as it will kick-in/out the solenoid when the pH is 6.8 and 6.7 inside the effluent.

If your intended operation of the controlling the PH in the CR is to be between 6.xx - 7.xx , you should calibrate the probe using Buffer 4 and Buffer 7. If yr intended measurement is bet 7.xx to 8.xx, u should calibrate probe using Buffer 7 and Buffer 10. Calibrating the probe at a range not intended for usage will result in false and inaccurate readings. Sadly, all lower end models provide standard slope 4 and Cal 7 function.

Thanks for the info guys.

Nice workmanship. John Guest quick connection.

Now the bubble count at 1drop per 10sec and my CA reading at 420ppm. This guy save alot of CO2.