Pool Line pH and ORP Controllers with Hanna Cloud Connectivity
BL122 and BL123 are designed to maintain constant pH and ORP (disinfectant) levels in swimming pools, hot tubs, and spas and offer the added benefit of allowing remote connection and access to devices via the Hanna Cloud web app. Available in two configurations, the basic version allows for direct installation of probe and chemical injection fittings into existing piping. Also available is a panel mounted version with a bypass flow cell that allows for calibration and maintenance of the probe without having to shut down the re-circulation pump.
The chlorine level is measured based on the ORP or REDOX principle. An increase of the ORP value correlates with an increase of the free chlorine level. pH and disinfectant testings are made together for more efficient disinfection and control. The efficacy of sanitizers, is dependent on a controlled pH value. The ORP value is the most consistent indicator of the sanitizing effectiveness of the pool/hot tub or water treatment. Typically 650-750 mV at 7.2 pH indicates proper water treatment (all harmful bacteria are killed in matter of seconds). pH and disinfectant testings are made using the HI1036-1802 combined electrode installed inline or in flow cell. 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. It was specially designed to detect the broken electrode based on a shifted ISO potential value. The HI1036-1802 uses a Ag/AgCl reference with 3.5 M KCl. The ORP values are referenced to it.