DrDAQ : pH Input

    DrDAQ data logger
  • Built in sensors for light, sound and temperature
  • Measures pH - just plug in any standard electrode
  • Complete and ready to use at a fraction of the cost of other data loggers
  • Output for control experiments
  • PicoLog (data logging) and PicoScope (oscilloscope and spectrum analyser) software included
 output resistance voltage light temperature external microphone ph

pH input

Most data loggers can not measure pH directly and require an (expensive) external amplifier. With DrDAQ the pH amplifier is built in. DrDAQ can be used with any standard pH electrode, details of a suitable (optional) electrode are shown below.

For basic measurements, DrDAQ is ready calibrated to give the correct pH readings. For accurate measurements, a facility is included to calibrate the electrode. As pH is proportional to absolute temperature, there is an option to compensate for temperature changes (using either the internal or an external temperature probe). Despite DrDAQs low cost, these two forms of calibration make for extremely accurate pH measurement.

The waveform at the bottom of this page shows the pH of a beaker of milk as it turns sour.

DrDAQ ph electrode

DrDAQ data logger pH sensor

pH is measured using a standard electrode with a BNC connector. Pico supplies a robust epoxy bodied pH electrode ideal for educational use. It covers the full 0 to 14pH range with a resolution of 0.02pH.
size 12 x 120mm
Operating temperature 0 to 60°C

Sample Waveform

pH data logger

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