YSI 63 - Manual (Page 8)

3. Preparing the Probe
The YSI Model 63 is shipped without the pH sensor installed. The pH sensor must be installed
before using the system (see section 3.1 Installing the pH Sensor, below). The sensor is shipped
with a protective bottle filled with a mixture of pH 4 buffer and KCl solution. Do not remove the
bottle until you are ready to use the instrument. Save the bottle for long term storage of the
probe.
3.1 Installing the pH Sensor
A pH sensor is included with the Model 63. Install the pH sensor as follows:
1. Remove the sensor from its protective packing.
2. Insert the pH sensor into the probe body (be sure to align the tabs on the sensor with the slots in
probe body) and twist 1/4 turn to lock in place. See Figure 3.
NOTE: Once installed, leave the pH sensor attached to the probe until replacement is needed.
3. Carefully remove the protective bottle (containing pH 4 buffer/KCl solution) from the sensor.
Save the bottle and solution for long term (more than 1 week) storage of the sensor. Seal the
storage bottle with the cap provided.
4. Rinse the sensor tip with distilled or deionized water.
5. Calibrate the system before use. See section 4.2 pH Calibration.
Align tabs with
slots in probe
body
Turn sensor 1/4 turn
to lock in place
Insert pH sensor
into probe body
Figure 3
4