DT016 Sensor Sheet

Sensor Description:

The DT016 sensor is a pH sensor, measuring values between 0 and 14. The DT016 is composed of an Egg Shaped sensor case and a pH electrode. The DT016 has an accuracy of ± 2%, and a resolution of 0.1 pH. The Data-Logger is equipped with a temperature compensation system. In order to use temperature compensation a temperature sensor should be connected to the Data-Logger along with the pH sensor.

How it works:

Inside the pH electrode there are two half-cells: one contains a reference element, on which a stable reference voltage is generated, The other, at the bottom of the electrode, is a pH sensitive glass membrane. The difference in voltage between the reference and the voltage measured is the output of the electrode. In the egg-shaped case the voltage is adjusted using an amplifier and trimmers to the range of 0-5 volts, accepted by the analog-digital converter. The proper result is then recorded into the Logger’s memory.

Calibration:

The DT016 has a simple calibration mechanism for more accurate measurements. In the back of the Egg-Shaped sensor case you will find a small hole. In order to calibrate the sensor you will need a reference pH (e.g. buffer solution in a pH of 7). Insert the electrode into the solution, then start a data recording. Insert a flat screwdriver into the calibration hole and slowly turn it until the measured value is exactly the same as the reference value. The sensor is now calibrated.

What is it used for:

The DT016 is used for various experiments in biology, chemistry and environmental science. The DT016 is used for measuring the pH of bodies of water over long periods of time, experiments such as diffusion of liquids, acidification of milk, or acid-base titration, and much more.