Frequently Asked Questions
Why are the pH, Rx and amperometric free chlorine sensor-electrodes not calibrated?
4. Water chemistry. The correctness of readings and service life of sensors is also strongly influenced by the chemical composition of water. Special attention and maintenance of the following parameters should be paid to: Hardness - 150 - 300mg/l; Alkalinity - 80 - 120mg/l; Salt content - up to 1000mg/l; TDS - up to 400ppm.
5. Correctness of connection. When connecting the sensors to the unit, refer to the instructions where the polarity of connection is indicated. If the polarity is incorrectly connected, the sensors will not pass calibration. Also it is necessary to be more attentive in which connector, which sensor you connect.
6. Correctness of calibration solutions. Pay attention to the expiration date of the solutions and their color. Calibration solutions will not give correct values if they are expired, if they are frozen, if they are stored in direct sunlight. Also with frequent use, their original color will change, which means that the solutions have been mixed with water.
7. Correctness of actions during calibration. Carefully read the instructions for calibrating the sensors. Often the reason for not calibrating the sensors is incorrect actions.
The instructions describe in detail what and how to do during calibration. If you still have questions, please contact our technical support.