User Guide

5.3 Taking Measurements

Be sure to remove the electrode soaker bottle or

protective rubber cap on the electrode before

measurement.

To take readings:

1. Rinse the probe with de-ionized or distilled water

before use to remove any impurities adhering to

the probe body. If the pH electrode has

dehydrated, soak it for 30 minutes in Eutech Instruments electrode storage solution or

2M – 4M KCl solution (sold separately).

2. Press ON to switch on meter. The MEAS annunciator appears on the top center of the

LCD. The ATC indicator appears in the lower right-hand corner to indicator Automatic

Temperature Compensation (section 5.2 on Manual Temperature Compensation).

3. Dip the probe into the sample.

4. When dipping the probe into the sample, the sensor or the glass bulb of the electrode

must be completely immersed into the sample. Stir the probe gently in the sample to

create a homogeneous sample.

5. Allow time for the reading to stabilize. Note the reading on the display.

6. To toggle between pH and mV (or Rel mV) readings, press the MODE key.

The READY mode informs you that the readings are stable within a range of ±0.01 pH. When

this occurs, the mode annunciator READY appears on the top left corner of the display. The

reading is held until the measured value exceeds the specified range when the READY

display is turned off.

NOTE FOR pH 100 ONLY:

•

The READY mode is turned on by default i.e. when the SETUP (READY) mode is

not programmed. You can verify this by going through SETUP mode (See section

9.3.2). If READY mode is switched off, the annunciator will not be displayed.

•

For ATC measurements, attach the probe to the CyberScan. The ATC mode

annunciator lights up. Insert the probe into the solution to be measured so that the

sample temperature can be recorded and compensated for.

Figure 23: Measurement mode