1. Introduction to pH meter:
PHS-3C, also known as pH meter, is suitable for sampling and measuring pH value and potential (mV) value of aqueous solution in laboratories of sanitary materials, sanitary products, colleges and universities, research institutes, and industrial and mining enterprises. In addition, it can also be equipped with an ion selective electrode to measure the electrode potential of this electrode. PHS-3C instrument is a 3 1/2 digit LED digital display, with manual temperature compensation function, international standard mark, and one or two point calibration PHS-3C can be used with E-201-C pH composite electrode.
2. Purpose and characteristics:
It is used to measure the acidity and electrode potential of aqueous solution. If it is equipped with an ion selective electrode, it can be used as the end point display of potentiometric titration analysis. Precise measurement of the pH value of the liquid medium, coupled with the corresponding ion selective electrode, can also measure the MV value of the ion electrode potential, which is widely used in industry, agriculture, scientific research, environmental protection and other fields. This instrument is also a necessary inspection equipment in the QS and HACCP certification of food plants and drinking water plants. During the measurement, insert the composite electrode into the solution to be measured, and different electromotive forces will be generated due to different acidity (hydrogen ion concentration) of the solution to be measured. Magnify it through the DC amplifier, and then point out the pH value of the solution to be measured by the reading indicator (voltmeter). The pH meter can be used in the range of 0~14pH. PHS-3C is an instrument for measuring pH value of solution. Its main body is a precise potentiometer.
3. Technical parameters:
1. Instrument level: 0.01
2. Measuring range:
pH：(0~14.00) pH
MV: (0~± 1999) mV (automatic polarity display)
3. ^ Small display unit: 0.01 pH, l mV
4. Temperature compensation range: (0~60) ℃
5. Basic error of electronic unit:
pH：±0.01 pH
MV: ± 1 mV ± l words,
Measuring range: 0-14PH, 0-1999 mv
Precision: no more than 0.02PH
Stability: no more than 0.02PH/2h
Input impedance: no less than 1012 Ω
