Milwaukee MI 805 User manual

USER MANUAL
MI 805
pH/EC/TDS/Temperature
Portable Meter
GENERAL OPERATION
• The meter is supplied
complete with a 9V
battery. Remove the
battery cover on the
back of the meter and
install the battery while
paying attention to its
polarity.
• Connect the MA851D/1
probe to the meter and
turn it on by pressing the
ON/OFF key.
• At start-up, the LCD
shows the percentage of the remaining
battery life for a few seconds, and then
the current measurement.
• To select the temperature
measurement unit (°C or °F), press and
hold the “ON/OFF” key until “TEMP” and
the current temperature unit are
displayed on the secondary LCD. Use
the “SET” button to select the unit, then
press “ON/OFF” a couple of times to
return to normal mode.
• To activate the HOLD
function, keep pressed
the “HOLD” key. The
measured value will be
frozen on the display
and the “HOLD”
message appears on
the secondary LCD.
• To set the measurement range (pH,
μS, ppm), press the “RANGE” key. The
chosen mode will be stored until next
change.
• Before taking any measurement, make
sure that the meter has been calibrated
(the “CAL” tag is displayed on the left
lower corner of the LCD).
• After measurements, switch the meter
off by pressing the “ON/OFF” key. The
“OFF” message appears on the LCD;
release the button.
• Store the electrode with a few drops of
storage solution in the protective cap.
TAKING pH MEASUREMENTS
• Always remove the electrode
protective cap before taking any
measurement. If the electrode has been
left dry, soak the tip (bottom 2.5 cm) in
M10000 rinse solution for a few minutes
to reactivate it.
• Select the pH range with the “RANGE”
key.
• Immerse the tip (2.5 cm) of the probe
into the sample and stir gently.
• Read the pH value when the clock
symbol stops blinking.
pH CALIBRATION PROCEDURE
A) Preparation, Buffer solutions:
1. pH 7.01 / 6.86 (MA9007 / MA9006)
2. pH 4.01 (MA9004) for acidic
calibration (pH < 7) or pH 10.01 / 9.18
(MA9010 / MA9009) for alkaline range
(pH > 7).
Use two beakers for each buffer
solution: one beaker for rinsing the
probe, the other for calibration. In this
way the cross contamination between
solutions is minimized.
B) Procedure:
• Enter the pH mode with the “RANGE”
key.
Select calibration buffer set: press and
hold the “ON/OFF” key until the LCD
shows “TEMP”.
Press again this key and the “BUFF”
message will appear; then select the
desired buffer set with the “SET” key:
“7.01 pH BUFF” (for standard solutions:
pH 4.01, 7.01, 10.01) or “6.86 pH BUFF”
(for NIST solutions: pH 4.01, 6.86, 9.18).
Press “ON/OFF” again to exit.
• Remove the protective cap, then
immerse the probe in the first buffer
solution.
• Press and hold the
“ON/OFF” key until
“CAL” is displayed on
the lower LCD. Release
the button and the
message “7.01 pH USE”
(or “6.86 pH USE” for
NIST buffer set) will be
displayed.
• For a single point pH calibration, place
the probe in any buffer from the selected
set (e.g. pH 4.01 or 7.01/6.86 or
10.01/9.18). The meter will automatically
recognize the buffer value, store the
calibration point and return to normal
mode.
• If using pH 7.01 (or pH 6.86), after
recognition of the buffer press the
“ON/OFF” button to return to normal
mode.
• For a two point pH calibration, place
the probe in pH 7.01 buffer (or pH 6.86,
if the NIST buffer set was selected).
The meter will recognize
the buffer value and
then display pH 4.01
USE.
• Place the probe in the second buffer
(pH 4.01 or 10.01, or, if using NIST, pH
4.01 or 9.18). When the second buffer is
recognized, the LCD will display “OK” for
1 second and the meter will return to
normal mode.
• The “CAL” tag is displayed on the LCD
to indicate that the meter is calibrated.

EC/TDS OPERATIONS
• The user can select the EC/TDS
conversion factor (CONV), as well as
the ß coefficient (BETA) for automatic
temperature compensation.
• Enter the EC or TDS mode with the
“RANGE” key, then press and hold the
“ON/OFF” key until “TEMP” is displayed
on the secondary
LCD. Press this key
again to show the
current conversion
factor (CONV).
• Press the “SET”
button to change the
value, then press
again this key to show
the current
temperature coefficient (BETA).
• Press “SET” to change the value, then
press “ON/OFF” key to return to normal
operation.
• For taking EC or TDS measurements,
immerse the probe in the solution to be
tested.
• Select either EC or TDS mode with
“RANGE”.
• Stir gently and wait for the reading to
stabilize (the clock symbol stops
blinking).
EC/TDS CALIBRATION PROCEDURE
• Clean the probe with M10000 solution.
• Enter the EC mode with the “RANGE”
key.
• Immerse the probe in MA9061 (1413
μS/cm) calibration
solution.
• Press and hold the
“ON/OFF” key until
“CAL” is displayed on
the LCD. Release the
button and the message “1413 μS USE”
appears.
• The meter will perform automatic
calibration, and then display “OK” for 1
second before returning to normal
mode.
• The calibration is now complete and
the “CAL” tag is displayed on the LCD to
indicate that the meter is calibrated.
BATTERY REPLACEMENT
The meter shows the remaining battery
percentage every time it is switched on.
When the battery level is below 5%, the
battery symbol on the bottom left of the
LCD lights up to alert the user.
The meter is also provided with BEPS
(Battery Error Prevention System),
which automatically switches the meter
off if the battery level is so low to cause
erroneous readings. It is recommended
to replace immediately the battery.
Turn the meter off,
remove the battery
compartment cover
from the rear of the
meter and replace
the rundown 9V
battery with a new
one.
Install the battery
while paying
attention to its
polarity and reattach
the cover.
NOTES
• If reading is over-range, the display will
flash the closest full scale value.
• To clear a previous calibration, press
“ON/ OFF” after entering the calibration
mode. The lower LCD will display ESC
for 1 second and the meter will return to
normal measurement mode. The “CAL”
symbol on the LCD will disappear and
the meter is reset to the default
calibration.
ACCESSORIES
MA851D/1 Amplified
pH/EC/TDS/Temperature
probe with DIN connector
and 1 m (3.3’) cable.
MA9004 pH 4.01 buffer, 230 ml bottle
MA9006 pH 6.86 buffer, 230 ml bottle
MA9007 pH 7.01 buffer, 230 ml bottle
MA9009 pH 9.18 buffer, 230 ml bottle
MA9010 pH 10.01 buffer, 230 ml bottle
MA9061 1413 μS/cm solution, 230 ml
MA9015 Probe storage solution, 230
ml
MA9016 General cleaning solution,
230 ml
M10000B Rinse solution, 20 ml (25
pcs.)
WARRANTY
This instrument is warranted against defects
in materials and manufacturing for a period of
two years from the date of purchase. Probe is
warranted for 6 months.
If during this period the repair or replacement
of parts is required, where the damage is not
due to negligence or erroneous operation by
the user, please
return the parts to either distributor or our
office and the repair will be effected free of
charge.
Damages due to accidents, misuse,
tampering or lack of prescribed maintenance
are not covered.
SPECIFICATIONS
RANGE 0.00 to 14.00 pH
0 to 3999 μS/cm
0 to 1999 ppm
0.0 to 60.0ºC or 32.0 to 140.0°F
RESOLUTION 0.01 pH
1 μS/cm
1 ppm
0.1°C or 0.1°F
ACCURACY (@25°C)
±0.01pH
±2% FS (EC/TDS)
±0.5°C or ±1°F
TYPICAL EMC DEV. ±0.02 pH
±2% FS (EC/TDS)
±0.5°C or ±1°F
TEMPERATURE
Automatic from 0 to 60ºC;
COMPENSATION
ß adj. from 0.0 to 2.4%/°C
pH CALIBRATION 1 or 2-point with
automatic buffer recognition
EC CALIBRATION Automatic, 1 point
EC/TDS FACTOR (CONV)Adj. from
0.45 to 1.00
PROBE (included) MA851D/1
amplified pH/EC/TDS/Temperature
probe with DIN connector and 1 m (3.3’)
cable.
ENVIRONMENT
0 to 50°C (32 to 122°F);
100% RH max.
BATTERY TYPE 1 x 9V alkaline (included)
BATTERY LIFE approx. 300 hours
AUTO-OFF after 8 minutes
DIMENSIONS 200 x 85 x 50 mm
WEIGHT 260 g (with battery)