計数式測定器とその応用に関する研究
計数式電圧計についてI
1956 年 5 巻 9 号 p. 516-518
詳細
1956 年 5 巻 9 号 p. 516-518
Recent measuring techniques are directed toward the using of digital measuring instrument. This instrument shows little or no error in reading as its numerical readings are made automatically. It is desirable to have this digital system of measuring instrument for various appliances to be used for electrochemists. Some digital instruments are on the market in the other countries but no such product is found in here. Attempts have been made by the authors for construction of a measuring instruments of milli-voltmeter type to read in the ranges of 01500 mV with 10 times more accurate than the measuring instruments with usual precision (±0.5%) as ±0.5% accurate for electrochemical estimation is insufficient. However, the accuracy (±0.01%) required for potentiometric type estimation is very seldom, and the construction of a digital measuring instrument with an intermediate accuracy (±0.050.1%) would eliminate the use of the potentiometer.
