LaMotte Tracer Total Chlorine Meter - Manual (Page 9)

Recalling Stored Readings
NOTE: The HOLD symbol should not be displayed. If it is, exit the
HOLD function by pressing the MODE button.
1. Press the CAL/RECALL button and then press the MODE/HOLD
button immediately after
CAL
is displayed; the location number (1
through 15) will flash.
2. The last stored reading taken will be displayed first. To advance
through the stored readings, press the MODE/HOLD button. The
location number is displayed first, followed by the reading stored in
that location.
3. To exit the storage mode, press the CAL/RECALL button and the
meter will return to normal operation.
4. If the batteries are removed, all stored readings will be lost.
For Best Accuracy
1. Remove TRACER from sample when power is off. Even though
power is off, leaving TRACER in solution can shorten unit life.
2. Wash sample cups and caps and rinse completely before use.
3. If measuring solutions with large differences in chlorine
concentration, for example, 0.1 ppm and 5.0 ppm, use a separate
sample cup for each concentration.
4. Discard the sample cup when it becomes stained.
5. The process requires an acidic solution. The reagent tablet provides
sufficient buffering capacity to deal with alkalinity, calculated as
calcium carbonate, up to and in excess of 500 ppm. This will cover all
common water samples.
6. When the electrode is new or after dry storage, chlorine
measurements should be repeated at least twice until a repeatable
reading is obtained.
7. Gently wipe the electrode surface with a paper towel between uses.
8. When measuring a lower chlorine concentration after a higher
concentration, the meter will temporarily give slightly elevated
readings.
9. All oxidizing species that interfere with other chlorine methods, such
as manganese, iodine and bromine will interfere. Silver and mercuric
ions over 20 ppm will also interfere.
10. Do not touch the tablets. It can contaminate them.
11. Do not touch the sensor surface.
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