6.
CONDUCTIVITY AND TDS MEASUREMENT
6.1 Taking Measurements
be into the sample beyond the upper steel band
side of the probe guard for
y.
g
measurement. Erroneous results will occur while the probe guard is
1)
Rinse the electrode with de-ionized or distilled water before use
to remove any impurities. Gently shake excess water droplets.
2) Dip the pro
(utilize the fill line on the out
reference).
3)
Allow time for the reading to stabilize. Note the reading on the displa
The clear yellow protective probe guard must be attached durin
removed.
6.2 Automatic and Manual Ranging
The PC 700 automatically selects the optimum range in which your
readings appear. Refer to
TABLE 1
for a list of the available ranges.
To turn-off automatic ranging, press
.
MEAS
will flash, indicating
that manual ranging is active. To manually
press
select the next range,
again. After range 5, automatic ranging is resumed.
F
(r
or example, a reading of 465
μ
S will automatically settle in range 3
3). Using manual range advancement this will read as 0.47 mS in
range 4 (r4), and 0.5 mS in range 5 (r5).
Automatic ranging is typically used since this will always provide the
best resolution.
10
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