6
INITIAL PREPARATION
Each meter is supplied complete with a 9V battery. Remove the battery
compartment cover on the back of the meter and install the battery
while observing its polarity.
Connect the probe to the DIN socket on the top of the meter by aligning
the pins with the socket and pushing in the plug.
Always remove the electrode protective cap before taking any mea-
surements or calibrating, and stir briefly the electrode in tap water to
remove the storage solution. Make sure the meter has been calibrated
before taking any measurements.
Turn the meter on by pressing the
On/Off
key.
TAKING pH MEASUREMENTS
If the probe has been left dry, soak the tip in
HI70300
storage solution
for 30 minutes to reactivate it.
• To take a pH measurement simply
submerge the tip (4 cm/ 1½”) of the
probe into the sample to be tested.
• Select the pH mode.
• Stir briefly and wait a couple of minutes
for the reading to adjust and stabilize.
The display shows the pH value.
• If measurements are taken in different
samples successively, it is recommended
to rinse (clean) the probe thoroughly
to eliminate cross-contamination. After
cleaning, it is recommended to rinse the
probe with some of the next sample to
be measured.
TAKING EC/TDS MEASUREMENTS
• Immerse the tip of the probe (4 cm/
1½”) into the sample to be tested. If
possible, use plastic beakers or containers
to minimize any EMC interference.
• Tap the probe lightly on the bottom of the
beaker to remove any air bubbles which
may be trapped inside the tip.
OPERATIONAL GUIDE
