PASCO PS-2169 Water Quality MultiMeasure Sensor - Manual (Page 3)

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M o d e l N o . P S - 2 1 6 9 T e m p e r a t u r e
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Xplorer GLX Setup
If you are using an Xplorer GLX in standalone mode, press to start data collec-
tion.
Note that the sensor may collected data for probes that are not connected. Hide or
ignore these measurements. To hide measurements that you do not need, open the
Sensors screen (from the Home screen, press
). In the Sensors screen you can
also change the sampling rate and open the calibration dialog box. For more instruc-
tions on using the Xplorer GLX, refer to the GLX Users’ Guide.
Temperature
Use this component of the multi-sensor to measure the temperature of a fluid or
object. The measurement can be displayed in units of °C, °F, or K. (In DataStudio,
click the Setup button to change units.) You can use the included stainless steel probe
or a different probe, such as the Fast-response Probe (PS-2135) or Skin/Surface Probe
(PS-2131). PASCO physics apparatus containing an embedded 10 k
Ω thermistor can
also be connected to the multi-sensor. The multi-sensor automatically detects the
presence of a temperature probe, and it will only collect temperature data if a probe is
connected.
Measuring Temperature
To measure temperature, connect the probe and start data collection. Immerse the tip
of the probe in a fluid or place it in contact with an object. The included stainless steel
probe can be used in both dry conditions and in liquids, such as water and other mild
chemicals and solutions.
Tip: For better chemical resistance, use a Teflon ® cover (CI-6549).
Temperature Calibration
The temperature measurement can be calibrated; however, for most applications cali-
bration is not necessary. Use a two-point calibration with two standards of known
temperature. For instructions on calibrating in DataStudio, see Appendix A. For
instructions on calibrating on the Xplorer GLX, refer to the Xplorer GLX Users’
Guide.
Conductivity
The conductivity component sensor measures the electrolytic conductivity of aqueous
solutions. It determines the conductivity by applying an alternating voltage to the
electrode cell at the end of the probe and measuring the resulting current. You can use
the included 10x electrode or a 1x electrode (PASCO part 699-06620). In the software
or on the interface select the Conductivity (10x) or Conductivity (1x) measurement,
depending on which electrode you are using.
Note: The 10x probe can be used to measure conductivity up to 100000 µ S/cm. The 1x probe
has one tenth of the range (up to 10000 µ S/cm) but ten times better resolution.
Measuring Conductivity
Before using the conductivity electrode, soak the end in distilled water for 5 to 10
minutes. Connect the electrode to the multi-sensor and start data collection. Immerse
F4
platinized
platinum
conductors
glass rod
Conductivity Electrode