Calibration Setup for pH Sensor - Team pHFine scale.

thingiverse

This system facilitates rapid baseline calibration of the team pHFine scale's pH sensor in standardized environments of general medium accuracy. An artificial seawater solution with a pH of 8.05 is mixed in the blue tank and then pumped into the smaller yellow and purple tanks where it reacts with hydrochloric acid, producing an acidic solution of pH 7.10, and sodium hydroxide which creates a basic solution of pH 9.20 respectively. These solutions are pumped into the orange tank where they mix evenly with atmospheric carbon dioxide in a sealed environment while being measured for pH and temperature with extraordinary precision using colorimetric pH sensors and team pHFine Scale's glass electrode sensor. After each measurement, these solutions drain into the green container ready for the next calibration step. This entire process is then repeated, but this time with slightly higher temperatures raised internally by inductive heaters for improved thermal compensation. To begin calibrating, a colorimetric pH sensor sends its collected data directly to the glass electrode sensor giving it all necessary references and settings. Meanwhile a Bluetooth transmitter, marked by a sleek black casing logs these readings from both sensors onto an available smartphone which can then transfer this precious calibration data onto the secured data logging server created by team pHyDronics 100%.