DATA LOGGING NUR FADILAH BINTI ABDALL

LATEBD20091035096

Introduction

• Data logging is use in measuring and recording of physical or electrical parameters over a period of time.

• common parameter of measurement that were used for data logging system.– Temperature, strain, voltage, current,

pressure, force, and acceleration.

Cont…

• Contain three main components that are sensor, data logger hardware and computer.

APPLICATION OF DATA LOGGING IN TEACHING AND LEARNING

• can motivate and increase interest of pupils and teachers to learn and teach sciences

• Advantages of using data logger over recording data manually. –measurements are always taken at the right

time. – Humans can make parallax errors– graphs and tables are produced

automatically by the data logging software

Melting & Boiling point

A)   ENGAGING PHASE

• The 2 pictures are displayed• Asking question to relate the picture

displayed with the topic learned.

B)    EMPOWER PHASE

Title    : melting and boiling point of a substance

 Objectives:In this experiment, you will• use a computer to measure temperature• analyze graphs of your data to determine the

freezing and melting temperatures of water• determine the relationship between the

freezing and melting temperatures of water

Materials Used:– Ice cube, 250 mL beaker, bunsen burner,

temperature probe (sensor), interface box and computer

Procedure:

1. Place the ice in the 250 mL beaker 2. Place the temperature sensor in the

ice. 3. Connect the sensor to an interface box

linked to the computer as shown in figure 3. 

Figure 3

4. Click the start button. Observe any transition process and the temperature they start to change. 

5. When all the ice melts, continue the experiment by placing Bunsen burner below the beaker for heating the water as in figure 4

Figure 4

6.  Click the Statistics button. The temperature value for the selected data is listed in the statistics box on the graph.

Results

30 130 230 330 430 530 630

-50

0

50

100

150

200Temperature, (oC) Time taken , seconds

-20 30

0 60

0 90

0 120

0 150

30 180

50 210

70 240

100 270

100 300

100 330

100 360

100 390

100 420

100 420

100 450

100 480

120 510

142 540

160 570

Based on the data obtained from data logger, students are ask to fulfill the following table and identify the phase of experiment for every 30 seconds. They also must discuss why there has a flat line in the graph. The results are in table below:

Time taken , seconds Temperature, (oC) Phase

30 0 Solid-liquid

60 0 Solid-liquid

90 0 Solid-liquid

120 0 Solid-liquid

150 30 Liquid

180 50 Liquid

210 70 Liquid

C. ENHANCE

• Students are group into 5 and every group is given a same case study to be discuss in a group.

• The case study is ‘what happen to the heating curve if salt is added into the water’. Discuss .

D. CLOSURE• Students are asking to flashback what

they had done in the class.

CONCLUSION

Data loggers help in better understanding of scientific experimentation. Other than

that, the used of data logger for determination the state of matter can be

more accurate.