LaMotte TRACER 1741 Mode D'emploi page 6

„ Meter Reset
If the meter will not calibrate or displays a -1, reset the meter and attempt to
re-calibrate.
1. Turn off the meter.
2. Remove the battery cartridge from the top of the meter.
3. Press the ON/OFF button for 10 seconds to bleed off all charges within the
meter.
4. Re-insert the batteries and turn the meter on.
5. Follow the pH Calibration procedure.
„ pH Measurement
1. Place the electrode in the test sample.
2. Record the pH after the reading becomes stable and the display stops
flashing.
3. Press the ON/OFF button to turn the meter off. Rinse the electrode with
distilled water. Replace cap
„ Measuring the pH of Soil
1. Place a 1:1 ratio of soil and distilled water in a small beaker. For most
analyses, 20 grams of soil and 20 grams distilled water are sufficient.
2. Wait 15 minutes. Stir occasionally with a stirring rod.
3. Stir the sample. Immediately place the electrode in the sample.
4. Wait until the display stabilizes. Record the pH.
5. Rinse the electrode in distilled water. Replace cap.
NOTE: The flat surface electrode will allow for readings directly from the soil if
there is enough moisture present in the soil.
„ Storing Readings
1. After the reading is made press the MODE
button to store the current reading The
storage location number will be displayed
followed by the reading being stored.
2. Press the MODE button to return to normal
operation.
3. Repeat step 1 to store the next reading.
4. If an attempt is made to store more than 15 readings, the stored readings
(starting with the first reading) will be overwritten.
„ Recalling Stored Readings
not displayed. If it is, exit the MODE function by pressing the MODE button.
1. Press the CAL button once and then press the MODE button immediately
after is displayed; the location number (1 through 15) will flash. If the
CAL
CAL mode is accidentally accessed (display flashing), press the CAL button
again to exit.
NOTE: First ensure that the
6
4 10.04
4 T
symbol is
HOLD
pH
HOLD
H
78.6
°F