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SDL100-EU-EN-V1.3-8/11
Getting Started
Power ON-OFF
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Press and hold the power button for at least 1.5 seconds to power ON the meter.
•
Press and hold the power button for 1.5 seconds to power OFF the meter.
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This meter is powered by six (6) 1.5VDC ‘AA’ batteries or by optional AC adaptor. If the meter
will not switch ON please check that fresh batteries are installed in the rear battery compartment
(refer to the battery replacement section later in this guide) or, in the case of the AC adaptor,
check that the adaptor is connected correctly to the meter and to an AC source (refer to the AC
Power Adaptor section later in this guide).
pH/ORP mV Measurements
Selecting pH or ORP modes of operation
Press and hold the FUNCTION button for at least 1.5 seconds; the display will begin to toggle
between pH and ORP modes. Release the FUNCTION button when the desired mode is displayed.
pH Measurement Range
pH measurements are displayed in the range of 0.00 to 14.00 in the upper, larger digit display area
of the meter’s LCD. Measurements made outside of this range will yield dashes (- - -) on the meter’s
LCD. The Temperature value is shown below the pH reading on the LCD. Refer to the
Measurement section for further information.
ORP mV Measurement Range
Ion-selective ORP (Oxidation Reduction Potential) measurements are displayed in the range of
±1999 mV (millivolts) in the upper, larger digit display area of the meter’s LCD. Measurements
outside of this range will yield dashes (- - -) on the meter’s LCD.
Connecting the pH or ORP Electrode
The measurement electrode connects to the BNC socket on the top left of the meter. If a pH
electrode is being connected to the meter for the first time, please perform a calibration as
described in the Calibration section of this user guide.
Taking a pH or ORP Measurement
For pH measurements only, determine whether Manual or Automatic Temperature Compensation
will be used and then set up as required.
Immerse the pH or ORP electrode into the solution under test and gently agitate the solution with
the probe. When the meter’s display has stabilized, note the reading (stabilization may require
several seconds up to several minutes, depending on the solution).
When measurements have been completed, be sure to store the pH electrode in its protective cap
with a pH4 moistened sponge.
