potentiometric recorder

例句：

1. 1.The potentiometric recorder is used to measure the electrical potential of a solution.
   电位测定器用于测量溶液的电位。
2. 2.The potentiometric recorder was used to detect the presence of pollutants in the water.
   电位测定器被用来检测水中污染物的存在。
3. 3. The potentiometric recorder was used to monitor the pH level of the solution.
   电位测定器被用来监测溶液的pH水平。