pH Sensor
(PS-2102)
Introduction
The pH Sensor measures the pH of a solution. The
measurement is recorded and displayed by the connected
computer or datalogger. The pH Sensor is well-suited for both
continuous recording and discrete measurements.
Components
pH amplifier
pH electrode
Storage bottle containing storage solution
Required additional components:
• PASPORT-compatible interface
• PASCO Capstone or SPARKvue data collection software
Related products:
• Replacement electrode (PS-2573)
• pH Buffer Capsule Kit (SC-2321)
Quick start
1. Connect the amplifier to your PASPORT-compatible
interface. If you are using a computer, connect the
PASPORT interface to it.
2. Connect the pH electrode to the amplifier.
3. Start the PASCO data collection software.
4. Remove the electrode from the storage bottle.
5. Rinse the electrode with distilled water and blot dry.
6. Immerse the end of the electrode in the solution to be
measured.
7. Begin recording data.
Get the software
You can use the sensor with SPARKvue or PASCO Capstone
software. If you’re not sure which to use, visit
pasco.com/products/guides/software-comparison
SPARKvue is available as a free app for Chromebook, iOS, and
Android devices. We offer a free trial of SPARKvue and
Capstone for Windows and Mac. To get the software, go to
or search for SPARKvue in your device’s
app store.
If you have installed the software previously, check that you have
the latest update:
SPARKvue
Go to Main Menu
> Check for Updates
PASCO Capstone
Go to Help > Check for Updates.
Set-up
Connecting the components
1. Plug the sensor’s PASPORT connector into any port of a
PASPORT-compatible interface. Turn on the interface if
needed.
2. Push the connector at the end of the electrode cable onto
the sensor’s electrode connector. Twist the connector to
lock it into place.
3. If you are using a computer, connect the PASPORT
interface to it and start PASCO Capstone or SPARKvue.
(For more details, see the manual for the PASPORT
interface.) The software should automatically recognize and
connect to the pH sensor.
pH electrode
to PASPORT
interface
For more information on using SPARKvue or PASCO Capstone,
consult the Capstone or SPARKvue online help.
Removing the storage bottle
1. Hold the electrode vertically to prevent the solution from
spilling out of the bottle.
2. Unscrew the bottle cap and pull the bottle down to remove
it. Keep the storage solution for later use.
3. Push the bottle cap up the electrode shaft to keep it out of
the way of measurements.
Collecting data
Once you have connected your sensor to PASCO Capstone or
SPARKvue, follow these steps to collect pH measurements from
a solution.
1. Rinse the electrode with distilled water and blot dry.
2. Immerse the electrode in the solution to be measured. The
bulb-shaped glass membrane should be entirely immersed.
3. Using the data collection software, create a display
measuring pH and begin recording data.
4. Wait for the reading to stabilize.
5. Once you have collected your reading, remove the
electrode from the solution. Rinse the electrode again
before placing it in any other solutions.
Product Guide | 012-07308J
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