Abstract：in this paper, according to the Tongren state of acid rain observation station of practical experience, introduced in detail the Shanghai magnetic card PHS-3B of acid rain pH meter working principle, operation, maintenance and troubleshooting common points, in order to protect the instrument in daily in acid rain observation in good and the best technical condition, as far as possible to reduce and avoid man-made measurement error of acid rain observation data, thus improving the accuracy and reliability of acid rain observation, to realize the normal business and operations to improve the quality of the stability.
2012, Vol. 29 