Micro pH sensor with temperature sensor for measuring pH with the micro pH sensor

摘要

PURPOSE: A sensor for measuring hydrogen ion concentration having a temperature sensor and an apparatus for measuring hydrogen ion concentration having the sensor are provided to easily use the sensor and reduce the size of the sensor by detecting temperature as well as hydrogen ion concentration. CONSTITUTION: An apparatus for measuring hydrogen ion concentration includes a sensor measuring hydrogen ion concentration having a temperature sensor(28); an amplifier(34) amplifying the hydrogen ion concentration measured by the sensor; a collective amplifier(36) collecting the amplified hydrogen ion concentration value for amplifying; a differential amplifier(42) directly connected to the temperature sensor for receiving an actual temperature value detected by the temperature sensor and receiving the temperature value through a detecting circuit(32), so that the differential amplifier differentiates and amplifies each temperature value; a CPU(38) calculating and outputting the corrected hydrogen ion concentration value and the temperature value by using the amplified hydrogen ion concentration value and the temperature value; and a display(40) visually providing the output value output from the CPU.