![]() ![]() Move the sensor to the second set of known conditions.When the displayed voltage reading stabilizes, click Keep. In the calibration dialog box, you will see the potential output of the sensor in volts. Type in the first known calibration value in the edit box.If using a wet sensor, remove the storage bottle from the sensor (if applicable), rinse the tip of the sensor with distilled water, and place the sensor in the first standard solution so the tip is immersed. Place the sensor in the first known set of conditions (e.g., known suspended mass or known pH buffer).Choose Calibrate from the Experiment menu and then click the Calibrate Now button.The program will identify the sensor and load a default data-collection setup. Connect the sensor following the steps in the Getting Started section of the user manual or by going to and selecting your sensor.Others will have single-point calibration available as an option in the calibration dialog. Some sensors (e.g., Go! Temp) will default to single-point calibration. ![]() A one-point calibration assumes that the slope for a sensor’s calibration is good and that only the intercept needs to be adjusted (these are all linear calibrations: y = mx + b). Note: For best results, the two calibration points should be widely separated and on either side of the readings you anticipate in your experiment.Ī two-point calibration is always better than a one-point calibration, but sometimes it is more convenient to adjust the sensor reading to a single reference. Your calibration is only as good as your knowledge of the reference values. For example, to do a two-point calibration for a pH sensor you will need two pH buffer solutions. To perform any calibration, you will need one or more external references for your sensor. In most cases it is not necessary to calibrate sensors however, for optimum accuracy you may choose to perform a calibration. How do I calibrate a sensor in Logger Pro?
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