Difference between measuring acidity and measuring pH
The acidity meter and pH meter are the same, and are high-precision industrial online automatic continuous detection of acidity and alkalinity analytical instruments.
The pH meter, abbreviated as pH meter, consists of two parts: electrode and ammeter. It is a commonly used instrument and equipment, consisting of a reference electrode, a glass electrode, and an ammeter. Widely used in industries, agriculture, scientific research, environmental protection, and other fields.
Acidimeter is a commonly used instrument and equipment, also known as pH meter. The BPH-200A series pH meter is mainly used for precise measurement of the pH value of liquid media, and can also measure the MV value of ion electrode potential when equipped with corresponding ion selective electrodes. It is widely used in industries, agriculture, scientific research, environmental protection and other fields. This instrument is also an inspection equipment for QS and HACCP certification in food factories and drinking water plants.
An acidimeter is an instrument used to measure the pH value of a solution. The main body of an acidity meter is a precision potentiometer. When measuring, the composite electrode is inserted into the measured solution, and different electromotive forces are generated due to the acidity (hydrogen ion concentration) of the measured solution. It is amplified by a DC amplifier and finally indicated by a reading indicator (voltmeter) to determine the pH value of the measured solution. The acidity meter can be used within the pH range of 0-14.
Temperature compensation function of pH meter and electrode calibration method of pH meter
The temperature compensation of a pH meter should include three parts: temperature compensation for electrode slope and temperature compensation for electrode zero point (including measuring electrode and reference electrode). The temperature compensation set on the pH meter only compensates for the slope term of the electrode (2.303RT/F). Therefore, temperature compensation is not sufficient for pH meter measurement and cannot completely eliminate errors caused by temperature. However, due to the temperature term of the solution and the zero point temperature term of the electrode, which cannot be determined and cause very small errors, they are omitted
