PH SENSOR AND CALIBRATION METHOD FOR THE PH SENSOR

A pH sensor for measuring pH levels within a measurement environment is described. T he sensor comprises a reference electrode, a pH sensitive electrode, and a controller, for measuring the potentialdifference between the pH sensitive electrode and the reference electrode, the measured potential difference being indicative of a pH level at the pH sensitive electrode. T he controller is operable to apply a voltage across first and second electrodes to control the p H level at the pH sensitive electrode, and to measure the potential difference between the p H sensitive electrode and the reference electrode following the application of the recalibration voltage. In this way, recalibration of the p H sensor is possible within the measurement environment. 描述了一种用于在测量环境中测量pH值的pH传感器。所述传感器包括：参比电极、pH敏感电极和用于测量所述pH敏感电极和所述参比电极之间的电位差的控制器，所测量的电位差指示pH敏感电极处的pH值。控制器可操作用于在第一和第二电极之间施加电压以控制所述pH敏感电极处的所述pH值，以及在施加所述重新校准电压后，测量所述pH敏感电极和所述参比电极之间的所述电位差。这样，可以在测量环境中重新校准pH传感器。