A counting-rate meter of high accuracy
E.H. Cooke-Yarborough, E.W. Pulsford · Proceedings of the IEE - Part II Power Engineering · 1951
The paper describes a counting-rate meter with which high accuracy and good linearity are obtained by virtue of the circuit design, which makes the reading very nearly independent of valve characteristics.The causes of errors are analysed, and it is concluded that no individual source is likely to contribute an error of more than 1%. Tests indicate that an overall stability better than ± 1% is obtained in practice.