User's Manual
®
Density Circulation Model ME-6816
4
2. Connect the PASCO sensors to the PASCO interface.
3. Prepare the Density Circulation Model.
Experiment Setup
• Use the data acquisition software to set up a Table into which you can enter data and a Graph to view your data.
1. Use the PASCO data acquisition software to set up an experiment with a Table display of Temperature and Depth (cm).
2. Set up the experiment for manual sampling so that temperature is measured by the sensor and depth is entered manually. Enter
the depth data in the Table display starting at 20 cm and ending at 1 cm with 1 cm decrements.
3. Set up a Graph display that will show Temperature versus Depth (cm).
Data Recording
Note: Data recording is easier if one person handles the Density Circulation Model and another person handles the computer or
data logger.
1. Put the temperature sensor in the warm water reservoir at the 10 cm depth.
2. Click or touch “Start” to begin data recording. Click or touch the “Keep” button to record the initial temperature of the warm
reservoir. Click or touch “Stop” to end data recording.
3. Record the value of the initial temperature of the warm reservoir in the Data section.
4. Move the temperature sensor to the cool reservoir and repeat the process to measure and record the initial temperature of the
cool reservoir.
5. Delete the first two data runs after you have recorded the initial temperatures in the Data section.
6. Open the top valve and the bottom valve to allow circulation. Wait a few minutes.
7. Position the tip of the temperature sensor at the 20 cm mark of one of the reservoirs.
8. Click or touch “Start” to begin data recording.
• Watch the value of temperature in the first cell of the Table display.
9. Click or touch “Keep” to record the value of temperature at the 20 cm mark.
10. Move the temperature sensor so the tip is at the 19 cm mark of the reservoir. Wait a few seconds.
11. Click or touch “Keep” to record the value of temperature at the 19 cm mark
12. Continue the process until the tip of the temperature sensor is at the 1 cm mark. After recording the value at the 1 cm mark,
click or touch “Stop” to end data recording.