DrDAQ

Data logger, oscilloscope, signal generator and more!

DrDAQ is a versatile instrument that connects to the USB port of any PC. Using the supplied PicoScope software it can be used as an oscilloscope, spectrum analyzer and signal generator.

From just £89.00

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Which freezes quicker, hot or cold water?

Introductionsuitable for ages 14-16 KS4 KS5

Educational data logger

This experiment uses a DrDAQ with external temperature probes to monitor the freezing of two samples of water at different temperatures. The results from this experiment will then show whether the initial temperature of water affects its freezing rate.

It is suitable for ages 14+ and requires some knowledge of the processes involved in state changes of liquids.

Equipment required

  • DrDAQ data logger connected to a PC running PicoLog
  • Two DrDAQ external temperature probes (Part no DD100)
  • Containers that can hold at least 300 ml of water
  • A kettle
  • A freezer

If the freezer is more than 2 m away from the DrDAQ then you may also require one or more 5 m sensor extension cables (Part no EL032).

Experiment setup

The experiment can be run in one of two ways and both are explained in further detail below:

The two samples can be frozen at different times. The amount of water, container and freezer must be the same.
The two samples can be placed in the freezer at the same time, with identical containers. This makes use of both external sensor connectors and ensures that the freezing conditions for both samples are identical.

drdaq experiment set up

Monitoring a single sample

Fill a container with 200 ml of tap water. Obviously the more water used the longer the experiment will take but the amount should remain constant for all future samples.

Insert an external temperature probe into the water.

Make sure the temperature probe isn't touching the side of the container and is fully submerged in the water.

Start running the PicoLog software and check the temperature reading is sensible.

Configure PicoLog to record a sample every 15 seconds for 2000 samples.

Place the sample in the fridge and carefully feed the cables for the temperature sensor out the edge of the door without pulling the sensors out of the cups.

When repeating this experiment for the other samples it is important you use the same amount of water, same container and the same freezer.

Monitoring two samples

Fill two containers, one with 200 ml of tap water and another with 200 ml of heated water (approx 40 °C) . Obviously the more water used the longer the experiment will take but the amount should remain constant for all samples.

Insert an external temperature probe into each container. Making sure the temperature probes aren't touching the side of either container and are fully submerged in the water

Make sure each channel is labeled to remove any confusion with the results.

Start running the PicoLog software and check the two temperature readings are sensible.

Configure PicoLog to record a sample every 15 seconds for 2000 samples.

Place the samples in the fridge and carefully feed the cables for the temperature sensors out the edge of the door without pulling the sensors out of the containers.

Carrying out the experiment

Start PicoLog collecting data and display the recorded data using the graph function in PicoLog. Check to make sure that the temperature of the samples start to decrease. The experiment will be finished once the temperature of both samples has levelled off – this was –11 °C in the freezer we used.

Testimonials

  • I have been using my 4224 PicoScope for years. I travel abroad so this has been ideal due to its physical size. Storage of waveforms on my Laptop is very easy allowing me to quickly email waveforms to my Colleagues.

    Andrew
  • Not many USB scopes works on Win & Mac & Linux too, so that proves me that guys from Pico really cares about us, customers. This made my decision much easier when I was looking to buy an USB scope.

    Raul Trifan
  • We have been using Picoscope 6404D for quite some time, and are amazed by its accuracy and powerful emulations while working with numerous signal evaluations.

    J Mohanty
  • PicoLog TC-08: This is a very nice unit that works consistently and reliably.

    Jeff Hulett
  • It is a great scope. I had a weird problem - it did not work on one of my PC’s. Customer service gave me first class service. If I could give 6 stars for customer service - I would do so.

    Niels Larsen
  • Perfect Partner for Development of Encoder controlled Stepper Motor Actuators. Since the included software is really stable, this type of device is a great tool for great tasks!

    Helmut Schoettner
  • A superb piece of equipment worth its weight in gold

    Nigel Clinch
  • So simple to use & beats any other I have ever used hands down.

    John D Samsing
  • Great functionality in a compact size. I really like moving the mouse pointer to a position and having the Time and Voltage display the values at that point. Calibration equipment is a breeze with that feature.

    Don Horein

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