Milwaukee MI 806 User Manual

USER MANUAL

MI 806

pH/EC/TDS/Temperature

Portable Meter

GENERAL OPERATION

• The meter is supplied
com pl et e w i t h a 9V batt er y.
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
perc entag e of the r emaini ng batt ery lif e
for a few seconds, and then the current
measurement.

• To select the temperature
mea surem ent unit (°C o r °F) , pr ess a nd
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
ret urn to normal m ode.

• To activate the HOLD
function, keep p res sed
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
sur e th at t he m eter has b een c ali brat ed
(the “CAL” tag is displayed on the left
lower corn er of the LCD).

• After measurements, switch the met er
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 ri ns e sol ut io n for a few mi nut es
to reactivate it.

• Select the pH range with the “RANGE”
key.

• Immerse the tip (2.5 cm) of the probe
into th e sample and stir gently.

• Read the pH value when the clock
symbol s top s bli nking.

pH CALIBRATION PROCEDURE

A) Pr epar ati on, Buffer solut ions:

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/O FF” a gain to exi t.

• 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) wi ll 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 t he NI S T buffer set was selected) .
The met er wi ll r ec og n i ze
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
tem perature 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 t he prob e in the s oluti on 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 MA9030 (12.88
mS/cm) calibration s olut ion.

• Press and hold the
“ON/OFF” key until
“CAL” is displayed on
the LCD. Release the
button and the
message “12.88 mS 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 m eter is calibr ated.

BATTERY REPLACEMENT

The m eter s hows the r emaini ng batt ery
percentage ev ery t im e it is swit ched on.
Wh en t he b att er y l evel is below 5%, the
battery symbol on the bottom left of t he
LCD l ights up to al ert the user.
The meter is also provided with BEPS
(Battery Error Prevention System),
which automatically switches t he meter
off if t he battery level i s so low t o cau se
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 cov er.

NOTES

• If reading is ov er-range, the display will
flash the clo sest 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 t he met er w i ll r et ur n t o
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
MA9030 12.88 mS/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 ins trument is warranted against d efects
in materi als and m anuf act uring for a peri od of
two years f rom the d at e of p urc h ase. Pr ob e is
warranted for 6 months.
If during t his peri od t he r epair or r epl acem ent
of parts is r equired , wher e the dam age is not
due to n egligenc e or erron eous op eration b y
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,
tamperi ng or lack of prescri bed maint enance
are not covered.

SPECIFICATIONS
RANGE 0.00 to 14.00 pH

0.00 t o 20.00 mS/cm

0.00 to 10.0 0 ppt

0.0 to 60.0ºC or 32.0 to 140.0°F
RESOLUTION 0.01 pH

0.1 mS/cm

0.01 ppt

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 automati c buffer r ecog nition

EC CALIBRATION Automati c, 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 ( w ith b att ery)