Milwaukee Instruments MW802, MW801 User Manual

Milwauke

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USER MANUAL

PORTABLE pH/EC/TDS METER

MODEL: MW801, MW802

Smart Combined Meter

WARRANTY:

This instrument is warranted from all defects in materials
and manufacturing for a period of two years from the
date of purchase.

The probe is warranted for a period of six 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 change.

Note: We reserve the right to modify the design,

construction and appearance of our products
without advance notice.

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PRELIMINARY EXAMINATION

Remove the instrument from the packing material
and examine it carefully to make sure that no
damage has occurred during shipment. If noticeable
damage is found, notify your Dealer.

Each meter is supplied complete with:

• MA850DIN preamplified non refillable double
junction combination pH electrode with built
in EC/TDS probe and temperature sensor;
1m (3.3') cable.

• pH7.01, 1413 µS/cm & 1382 ppm (for MW801)
or 1500 ppm (for MW802) solutions, 20 mL
each.

• Instruction Manual.

• 1 x 9V battery.

OPERATION

Slide the battery compartment cover located on
the back of the meter off, and install the battery
into the battery clip connector while observing
polarity.

Connect the probe to the meter
securely by aligning the pins
with the socket and pushing
the plug in.

Always remove the electrode
protective cap before use.

Make sure that the meter has
been calibrated before taking
any measurements (see
calibration procedure).

Turn the instrument on by pressing the ON/OFF key.

pH MEASUREMENTS

If the electrode has been left dry, soak the tip in
a pH7 (M10007) buffer solution for a few minutes
to reactivate it.

Submerge the tip of the electrode into the sample
to be measured, select the pH mode and allow
the reading to stabilize before taking measurements.

EC/TDS MEASUREMENTS

Immerse the tip of the electrode into the sample
to be tested.

Select the measurement range (EC or TDS)
and wait for the temperature sensor to reach
thermal equilibrium with the samples before
taking measurements.

AFTER MEASUREMENTS the instrument should
be switched off and the probe cleaned and stored
with a few drops of storage solution in the
protective cap.

CALIBRATION PROCEDURE:

Remove the protective cap from the electrode.
Switch the meter on.
Select the range pressing the appropriate key for

pH, EC or TDS.

pH Calibration

A) PREPARATION

Single point manual calibration. Choose buffer.
If you are going to measure samples near pH 7

use pH 7.01 buffer solution (M10007B) for calibration;
use pH 4.01 buffer solution
(M10004B) for acidic
measurements, or pH 10.01
(M10010B) for alkaline
measurements.

B) PROCEDURE

Rinse the tip of the electrode and immerse it in
the calibration solution. Wait a couple of minutes
for the reading to stabilize.

Measure the temperature of the
buffer solution with a thermometer.

Adjust the calibration knob until the
LCD shows the pH value of the
buffer at the measured temperature
(see pH versus temperature chart).

The calibration is now complete and the meter is
ready for use.

EC/TDS calibration:

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A) PREPARATION

Single point EC calibration.
Choose appropriate standard:

Model MW801: use 1382 ppm
(M10032B) for TDS or 1.413 μS/cm (M10031B)
for EC calibration.

Model MW802: use 1500 ppm (M10442B) for
TDS or 1.413 mS/cm (M10031B) for EC calibration.

B) PROCEDURE
Immerse the tip of the electrode in the standard

solution.
Wait for the reading to stabilize, and thermal

equilibrium be reached.
Turn the EC/TDS calibration

knob until the display shows
the EC or TDS reading at
25°C.

The calibration is now complete
and the meter is ready for use.

The instrument should be re-calibrated at least
once a month, or when the probe or battery is
replaced.

Note:The conversion between EC and TDS is

made by a built-in circuit. If calibration
is made in EC range, TDS range is
automatically calibrated (or vice versa).

BATTERY REPLACEMENT:

The meters are powered by a 9V battery that is
in a compartment located in the rear of the
instrument.

When the battery becomes weak, the instrument
automatically switches off.

Replacement must only take place in a non-hazardous
area using an alkaline 9V battery. Slide off the
battery compartment cover and replace the old
battery with a new one. Make sure that the battery
contacts are fully engaged in the connector. Seat
the battery in is compartment and replace the
cover.

Milwauke

pH VERSUS TEMPERATURE CHART

PMETSEULAVHp

C°F°4009AM7009AM0109AM

02310.431.723.01

51400.401.742.01

010500.470.781.01

519500.440.721.01

028600.430.760.01

527710.410.71

036820.400.769.9

535930.499.629.9

0440140.489.658.9

5431150.489.658.9

0522160.489.628.9

5513170.489.697.9

0604190.489.677.9

5694111.499

0785121.499.657.9

.667.9

0.01

OPTIONAL ACCESSORIES

M10007B pH7.01 buffer solution,
M10004B pH4.01 buffer solution,
M10010B pH10.01 buffer solution,
M10031B 1413 μS/cm calibration
M10032B 1382 ppm calibration
M10442B 1500 ppm calibration
MA9015 Electrode storage
MA850DIN pH/EC/TDS spare probe

25x20 mL sachet
25x20 mL sachet
25x20 mL sachet
solution, 25x20 mL sachet
solution, 25x20 mL sachet
solution, 25x20 mL sachet
solution, 220 mL bottle
with 1m cable

SPECIFICATIONS:

MW801 MW802

RANGE 0.0 to 14.0 pH 0.00 to 14.00 pH

0 to 1990 ppm 0 to 4000 ppm

0 to 1990 μS/cm 0.00 to 6.00 mS/cm

RESOLUTION 0.1 pH 0.10 pH

10 ppm 10 ppm

10 μS/cm 0.01 mS/cm

ACCURACY ± 0.2 pH ±0.20 pH
(@ 20ºC) ±2% Full scale ±2% Full scale

CALIBRATION M10007B (pH 7.01)
SOLUTIONS M10031B (1.413 mS/cm)

M10032B (1382ppm) M10442B (1500ppm)

CONVERSION 0.5 0.68
FACTOR

CALIBRATION Manual, at 1 point

TEMPERATURE COMPENSA TION

Automatic from 0 to 50ºC

PROBE MA850DIN combination pH/EC/TDS probe

ENVIRONMENT 0 to 50ºC, 95%RH max

BATTER Y LIFE /TYPE 1x9V alkaline

approx. 150 hours of use

DIMENSIONS 143 x 80 x 32 mm

WEIGHT 220 g (with battery)

ISTMW802 01/10