Vernier LabPro User Manual download pdf (Page 16)

12 Vernier LabPro User’s Manual

Tutorial: Temperature Measurement with DataMate

A good way to get acquainted with LabPro is by performing a simple experiment. Using this tutorial,

you will take measurements using a Temperature Probe. Just follow the simple steps, and you are well

on your way to collecting and analyzing data with a calculator.

MATERIALS

TI graphing calculator

LabPro interface

Vernier Stainless Steel Temperature

Probe

One 250 mL beaker or cup

100 mL hot water

PROCEDURE

1. Place about 100 mL of hot water into a 250-mL beaker or a cup.

2. Plug the Stainless Steel Temperature Probe into CH 1 on LabPro, and place the Temperature Probe

on the tabletop.

3. Start DataMate. Press

CLEAR

to reset the program. DataMate will detect the auto-ID sensor, set the

data-collection parameters, and display the current sensor reading. The experiment will collect

temperature for 180 seconds.

4. Select START to begin data collection.

5. Wait about 10 seconds and place the Temperature Sensor into the cup of hot water as shown above.

A live graph will appear on the calculator screen. You can either allow DataMate to complete data

collection or press the

STO

key to stop data collection.

6. After the data collection is complete, an autoscaled graph of the data will appear. Notice that the

probe does not read the new temperature instantly; it takes a little while to respond. This is a

characteristic of the sensor. Use the

or keys (or the cursor pad on the TI-89, TI-89

Titanium, TI-92, TI-92 Plus, or Voyage 200) to examine the data points along the displayed curve of

temperature vs. time. As you move the cursor right or left, the time (X) and temperature (Y) values

of each data point are displayed below the graph. Move the cursor to the point when the probe was

first placed in the hot water. Record that time. Move the cursor to find the highest temperature and

record that time. How long did it take for the temperature sensor to stabilize at the water’s

temperature?

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