pH and temperature of high precision with an acquisition data card

This work shows the use of a pH and temperature meter using discreet components with the DAQ CARD 6024E of National Instruments through the software LAB VIEW V8. This has different characteristics and very portable ones that permit the obtaining of signal through the Data Acquisition Card, which permits the computer to monitor for registering the measures that entails to an industrial development process. Here, important results are observed with decimal precision for temperature and hundredths for pH with samples of every 0.001s and frequency values of 1khz from what it is observed that the pH value is a dependant variable on the temperature. This system make us possible the control strategiesdesign and the automation in a very short time, by scroll systems on the screen besides the application is minimized in a virtual instrument, this designed device does not require recalibration every time that it is used for measuring any solution, besides, it makes possible to register and observe the collected data and update it for each measuring.