DefinitionA <PH ANALYSER> is a <PROCESS ANALYSER> intended to determine the concentration of free hydrogen-ions in an aqueous solution, indicating its acidity or basicity expressed as <pH>, thereby using a <PH MEASURING ELEMENT> and a <PH TRANSMITTER>
A pH meter is a specific type of voltmeter with a very high impedance of the input channels. The high impedance is a necessary part of the equipment because of high resistance of the pH glass electrode typically used with pH meters (usually between 20 and 100 MΩ).