Open source pool control panel7/2/2023 ![]() ![]() As the pH level increases, the ORP level decreases. With chlorine disinfection there is an inverse relationship between pH and ORP. The adjustable flow rate, like the proportional band, allows for better control in maintaining a desired set point. ![]() Larger bodies of water require more chemical to be dosed than small bodies since it takes more chemical to realize a change in the reading. The flow rate from the dosing pumps is adjustable from 0.5 to 3.5L/h. ![]() This setting determines the amount of time that the pumps are dosing as a percentage of the deviation from the set point allowing for very fine control in maintaining the desired set point. Based on the sensitivity of the process to chemical addition, these controllers allow the user to adjust a proportional band. Pool LIne controllers feature proportionally controlled dosing pumps. When using a diaphragm pump, chlorine gas formed from outgassing can collect in the pump head resulting in the pump losing its prime the buildup of chlorine gas is not a problem with peristaltic pumps that use rollers and tubing. The BL122 and BL123 are equipped with two peristaltic dosing pumps with replaceable chemical resistant tubing. The HI1036-1802 uses a Ag/AgCl reference with 3.5 M KCl. It was specially designed to detect the broken electrode based on a shifted ISO potential value. To prevent the ground loop effects from causing erratic readings and damage to the system the electrode has a matching pin considered the “earth ground“ connection. pH and disinfectant testings are made using the HI1036-1802 combined electrode installed inline or in flow cell. Typically 650-750 mV at 7.2 pH indicates proper water treatment (all harmful bacteria are killed in matter of seconds). The ORP value is the most consistent indicator of the sanitizing effectiveness of the pool/hot tub or water treatment. The efficacy of sanitizers, is dependent on a controlled pH value. pH and disinfectant testings are made together for more efficient disinfection and control. An increase of the ORP value correlates with an increase of the free chlorine level. The chlorine level is measured based on the ORP or REDOX principle. ![]()
0 Comments
Leave a Reply. |