PASCO PS-2170 Chemistry MultiMeasure Sensor - Manual (Page 3)

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M o d e l N o . P S - 2 1 7 0 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 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.
pH/ISE/ORP
The pH/ISE/ORP input of the multi-sensor is a specialized voltage sensor. Its BNC
connector accepts the included pH electrode, as well as ISE and ORP electrodes. The
sensor measures the voltage produced by any of these electrodes. When used with a
pH probe, the sensor also computes the pH based on the measured voltage.
Connect the pH electrode (or other electrode) to the pH/ISE/ORP port and start data
collection. On your computer or interface, display the ISE Voltage measurement (this
measurement is valid for pH and ORP electrodes as well as ISE) or the pH measure-
ment for the calculated pH (assuming that the pH electrode is connected).
Measuring pH
The pH electrode produces a voltage proportional to the pH of the solution that it is
immersed in. This voltage is measured by the multi-sensor, which computes pH.
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