Portable pH meter with constant temperature water bath and window display

Abstract

The invention discloses a portable pH meter with a constant temperature water bath and a window display. The portable pH meter comprises: a shell; a pH composite electrode, a temperature sensor, a display screen and a switch which are arranged on the shell; and a battery, a pH conditioning circuit and a man-machine interaction circuit which are arranged in the shell, wherein the man-machine interaction circuit receives the output signal of the pH composite electrode through the pH conditioning circuit, and displays the output signal on the display screen, the battery supplies power to the man-machine interaction circuit, and the switch controls the start and the stop of the man-machine interaction circuit. The portable pH meter also comprises a solution-to-be-detected cup and a water bathcup which are detachably connected to the shell, the shell is provided with an electric heating mechanism, the pH composite electrode and the temperature are covered in the solution-to-be-detected cup, the solution-to-be-detected cup and the electric heating mechanism are covered in the water batch cup; and the man-machine interaction circuit also receives the output signal of the temperature sensor, and controls the electric heating mechanism. The electric heating mechanism and the water bath cup rises the temperature of a solution to be detected to preset 25 DEG C to obtain an accurate pH value.

Description

technical field [0001] The invention relates to the field of pH meters, in particular to a portable pH meter with a constant temperature water bath and window display. Background technique [0002] PH value is an important indicator of water quality, and most monitors use portable PH meters to monitor the PH value of water in remote areas. Existing portable pH meter comprises casing, and the pH compound electrode that is arranged on casing, temperature sensor, display screen, switch, the battery that is arranged in casing, PH conditioning circuit and human-computer interaction circuit, described human-computer interaction The circuit receives the output signal of the PH compound electrode through the PH conditioning circuit, and displays it on the display screen. The battery supplies power to the human-computer interaction circuit, and the switch controls the start and stop of the human-computer interaction circuit; the temperature sensor is used to measure the temperature o...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a portable pH meter with a constant temperature water bath and a window display, which can solve the problem that the existing portable pH meter adopts the method of pH electrode slope temperature compensation to improve the measurement accuracy, resulting in the inability to completely eliminate the temperature caused by the pH meter. error, limited measurement accuracy, and the measurement accuracy is getting lower and lower, and must be calibrated regularly

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