LaMotte Tracer ORP Meter - Manual (Page 6)

Basic Operation
Powering the TRACER
If the batteries are weak, the
BAT
indicator will appear on the LCD.
Press the ON/OFF key to turn the TRACER on or off. The auto power
off feature will shut the TRACER off automatically after 10 minutes of
inactivity.
Electrode Recognition
When the TRACER is turned on, it will recognize the type of electrode
that is connected and will display the appropriate unit of measure. An
electrode must be attached before turning the meter on.
Automatic Calibration
When the TRACER is turned on, it will enter the Automatic
Calibration mode. ‘SELF’ and ‘CAL’ will appear on the display while
calibration is in progress. After the calibration is completed, the ‘SELF’
and ‘CAL’ display icons will extinguish and both the main display and
the bargraph will read ORP in mV.
Data Hold
Press the MODE/HOLD button to freeze the current reading. The
HOLD
display icon will appear along with the held reading. The held reading
will be stored in the next 15-reading storage location. Press the
MODE/HOLD button to return to normal operation.
TESTING
Overview
ORP is the abbreviation for Oxidation Reduction Potential and
represents the oxidizing or reducing nature of a solution. The overall
reactive tendency of a solution can be determined from ORP
measurements.
Display
When the electrode is placed in a solution, the main display and bar
graph will indicate the ORP reading. Readings flash until they have
stabilized. The bar graph is ‘center zero’, i.e. at 500mV there is no
display. As the readings increase from 0 to 1000 mV the bar will move
from the left to the right.
Getting Started
1. Remove the cap from the bottom of the TRACER to expose the
flat surface electrode and reference junction.
2. White KCL crystals may be present in the cap. Rinse the crystals
with tap water.
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