4
will keep the electrode polarized and enables the user to make immediate
measurements within a 7 day period without waiting for the electrode to re-
polarize. Each time the Tracer is turned on, the polarization timer is reset and
the 7 day polarization period is initiated. A small asterisk at the bottom right
corner of the display will indicate that the polarization timer circuit is active
only when the meter is off. If the Tracer is not used for more than seven days, a
3 minute waiting period is required before a measurement can be made.
Turn-On Diagnostics
1. When the meter is turned on ‘SELF’ and ‘CAL’ will be displayed while the
meter runs a diagnostic routine.
2. During this time the meter is recalling the User Calibration data,
performing self diagnostics & initializing the circuitry.
3. After this function is complete, the meter proceeds to the normal
measurement mode.
Changing the Temperature Units
To change the displayed temperature units between °F and °C
1. With the unit OFF, press and hold
CAL
.
2. With
CAL
depressed, momentarily press
ON/OFF
to turn the Tracer ON.
3. Release
CAL
. ‘SELF CAL’ will be displayed.
4. Repeat Steps 1 – 3 to change to the other temperature unit.
Changing the Salinity Compensation
1. With the Tracer ON, momentarily press
CAL
twice in quick succession. ‘SAL’
will be shown on the lower part of the display.
2. Momentary press
MODE
. Each press of
MODE
increases the salinity
compensation by 1ppt (part per thousand); the available range is 0 to
50ppt.
3. Momentarily press
CAL
to save the compensation setting and return to the
normal measurement mode.
Changing the Altitude Compensation
1. With the Tracer ON, momentarily press
CAL
twice in quick succession. ‘SAL’
will be shown in the lower part of the display.
2. Press and hold
CAL
again for 2 seconds to enter the Altitude Mode. ‘Ald’ will
be shown in the lower part of the display.
3. The factory default value is sea level. Each press of
MODE
increases
the altitude compensation by 1000ft. The maximum value is 20 presses
(20,000ft above sea level).
4. Momentarily press
CAL
to save the compensation setting and return to the
normal measurement mode.
Changing the Measurement Units
The meter can be set to measure % saturation, dissolved oxygen in mg/l, and
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