Pasco PS-2108 Dissolved Oxygen Sensor Manual de usuario descargar pdf (Pagina 1)

PS-2108

The PS-2108 Dissolved Oxygen Sensor measures the amount of dissolved

oxygen (mg/liter or %) in a solution.

Dissolved Oxygen Quick Start

Additional Equipment Needed

• PASPORT

interface (USB Link, Xplorer, etc.)

• EZscreen or DataStudio

software (version 1.5.3 or later)

Equipment Setup

1. Connect the PASPORT interface to a USB port on your computer or to a USB hub.

2. Connect the Dissolved Oxygen probe to the sensor.

3. Connect the sensor to the PASPORT interface. (If using an Xplorer in the classroom,

connect the Xplorer cable to a USB port or hub.). The software launches when it

detects a PASPORT sensor.

4. Select a choice from the PASPORTAL window.

Sensor Specifications

Sensor Range:

0 mg/L to

20 mg/L

Accuracy:

±10% of full scale

Resolution:

0.01 mg/L

Max. Sample Rate:

20 samples per second

Default Sample Rate:

2 samples per second

Response:

98% in 60 seconds

Temperature Range:

C to 50

Temperature Compensation:

Cathode:

Platinum

Anode:

Ag/AgCI

800-772-8700 • 916-786-3800 • techsupp@pasco.com • www.pasco.com

012-07688C

Dissolved Oxygen

Sensor

*Note: Prior to first use, fill the electrode

membrane cartridge and housing with

electrolyte solution. See “Changing the

Electrolyte Solution” on card 3A.

CARD 1A

Dissolved O

Activity - Cellular Respiration

Equipment Required:

• Dissolved Oxygen Sensor with electrode storage bottle (PS-2108)

• Temperature Sensor (PS-2125) or a thermometer

• PASPORT interface (Xplorer (PS-2000), USB Link (PS-2100), etc.)

• DataStudio software (CI-6870C)

• 400 mL distilled or deionized water

• Sugar (sucrose), 5 grams

• 5 mL activated yeast suspension (follow directions on yeast package)

• Clamps and lab stand to suspend the 2 sensors in solution

• Lab glassware:1-L bottle with lid, 600-mL and 400-mL beakers,

graduated cylinder, small test tube, stirring rod

• Wash bottles for rinsing sensors

1. Connect the Dissolved Oxygen Sensor to a USB Link (or Xplorer) and

launch DataStudio.

2. Fill a 1-liter bottle with 400 mL of distilled water.

3. Tightly close the lid and shake vigorously for 10 seconds to oxygenate

the water.

4. Pour the oxygenated water into the 600-ml beaker and dissolve five

grams of sugar into it.

5. Put the Temperature Sensor and Dissolved Oxygen Sensor into the

sugar solution, and gently stir the solution.

6. Click the Start button to begin collecting data. Continue stirring.

After 30 seconds, add the 5-mL sample of activated yeast suspension

to the beaker. Continue stirring and recording data.

7. Record data until the dissolved oxygen level stabilizes (approximately

10 minutes), then click the Stop button.

8. If time permits, perform additional runs with oxygenated water that is a

few degrees colder or warmer than room temperature.

Effect of Cellular Respiration on Dissolved

Oxygen Concentration

DataStudio/DS Lite Tasks:

View a measurement:

From the Data list, drag the run icon to the open

display.

Change measurement units:

On the main toolbar, click on the Setup

button. Scroll to the Dissolved Oxygen Sensor

options box, and click to select the desired unit from

the unit drop-down menu.

Scale to fit the data:

On the graph toolbar, click on the Scale-to-Fit

button.

View data statistics:

In the Graph display, click on the Statistics button,

and select Minimum, Maximum, or Mean.

CARD 1B

1 2 3

Indice de contenidos

Pagina 1 - Dissolved Oxygen

®PS-2108The PS-2108 Dissolved Oxygen Sensor measures the amount of dissolved oxygen (mg/liter or %) in a solution.Dissolved Oxygen Quick StartAddition

Pagina 2 - Setup and Calibration

Calibration with DataStudio SoftwareSetup and CalibrationEquilibrate the Probe in 100% Humidified Air: 1. Before performing any calibration, place 5 m

Pagina 3 - Sensor Maintenance

Dissolved O2 Sensor MaintenanceReplacing the MembraneIf the membrane is damaged, replace it as follows: 1. Follow steps 1–3 under “Changing the Electr