C h e m i s t r y M u l t i M e a s u r e S e n s o r
T e m p e ra t u re
4
012-09523B
Hand-held Setup
Using the SPARK SLS
•
Connect the sensor to a port on the SPARK SLS and turn on the interface. The sensor parameter screen opens and shows
the list of measurements for the sensor.
•
In the sensor parameter screen, touch or click the measurement, and then touch ‘Show’ to open a graph display of the
measurement.
•
Touch “Start”(
) to begin recording data. Touch “Stop” (
) to stop recording data.
Using the Xplorer GLX
•
Turn on the interface and connect the sensor to a port on the top. A Digits display of Absolute Pressure (kPa) and Voltage
(V) opens automatically and shows the data being monitored.
•
Press the
Start/Stop
key (
s
) to begin recording data. Press the same key again to stop recording.
•
Note that the sensor may collect 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 (
I
). In the Sensors
screen, use the up or down cursor keys to highlight a measurement. Press
“
Check
” (
c
) to change the visibility of that measurement. (You can also
change the sampling rate and open the calibration dialog box from the Sen-
sors screen.)
Calibration Information
See the Appendices for detailed information about calibrating the sensor.
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. You can use the included stainless steel probe or a different probe, such as the Fast-response Temperature
Probe (PS-2135) or Skin/Surface Temperature Probe (PS-2131). PASCO apparatus containing an embedded 10 k
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 con-
tact with an object. The stainless steel probe can be used in both dry conditions and in liquids, such as water and other mild
chemicals and solutions*. The included blue polyurethane tubing allows the stainless steel probe to fit inside a standard 0.25”
diameter stopper hole.
Tip: For better chemical resistance, use a Teflon
®
cover (CI-6549).
Temperature Calibration
The temperature measurement can be calibrated; however, for most applications calibration is not necessary. Use a two-point
calibration with two standards of known temperature. For instructions on calibrating the sensor, see the Appendices.
pH/ISE/ORP
The pH/ISE/ORP input of the multi-sensor is a specialized voltage sensor. Its BNC connector accepts the included pH elec-
trode, as well as ion selective electrodes (ISE) and oxygen reduction potential (ORP) electrodes. The sensor measures the volt-
age produced by any of these electrodes. When used with a pH electrode, the sensor also computes the pH based on the
measured voltage.
