Milwaukee SM106 User Manual

GENERAL OPERATION:

• The meter is supplied com­plete with a 9V battery.
Remove the battery com­partment cover on the back
of the meter and install the
battery while paying atten­tion to its polarity.

• Connect the MA923D/1
probe to the meter.

• Turn the instrument 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.

• 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.

• The temperature reading can be displayed in
°C or °F unit; to select the desired scale,
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 and then press the
“ON/OFF” key 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 appear on the secondary LCD.

• After measurements, switch the meter off
by pressing the “ON/OFF” key. The “OFF”
message appears on the LCD; release the
button.

• After use, replace the electrode protective
cap with a few drops of storage solution.

TAKING pH MEASUREMENTS:

• Select the “pH” mode with the “SET ” key.

• Immerse the tip (2.5 cm) of the probe in the
sample and stir gently.

• Read the pH value when the clock sym­bol stops blinking.

Note: 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).

pH CALIBRATION PROCEDURE:

It is recommended to recalibrate the meter at
least once every three weeks.

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:

• Select the “pH” mode with the “SET ” key.

•

Select the 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 the “ON/OFF” key again
to exit.

• Remove the protective cap, then immerse
the probe in the first buffer solution (7.01
or 6.86 pH).

• 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.

USER MANUAL

PORTABLE pH/ORP METER

WITH EXTENDED RANGE

MODEL: SM106

pH, ORP, Temperature Meter

ISM106R1 11/03

ACCESSORIES:

MA9004 pH 4.01 buffer, 230 ml bottle
M10004B pH 4.01 buffer, 25 x 20 ml sachet
MA9006 pH 6.86 buffer, 230 ml bottle
M10006B pH 6.86 buffer, 25 x 20 ml sachet
MA9007 pH 7.01 buffer, 230 ml bottle
M10007B pH 7.01 buffer, 25 x 20 ml sachet
MA9009 pH 9.18 buffer, 230 ml bottle
M10009B pH 9.18 buffer, 25 x 20 ml sachet
MA9010 pH 10.01 buffer, 230 ml bottle
M10010B pH 10.01 buffer, 25 x 20 ml sachet
MA9015 Electrode storage solution, 230 ml
MA9016 Cleaning solution, 230 ml bottle
M10016B Cleaning solution, 25 x 20 ml sachet
M10000B Rinse solution, 25 x 20 ml sachet
MA923D/1 Combination amplified pH/ORP/

Temperature probe with DIN con­nector and 1 m cable.

SPECIFICATIONS:

RANGE pH -2.00 to 16.00 pH

ORP -2000 to +2000 mV

Temp (*) -5.0 to 105.0 ºC

23.0 to 221.0 °F

RESOLUTION pH / ORP 0.01 pH / 1mV

Temp 0.1 °C or 0.1 °F

ACCURACY (@25°C)

pH / ORP ±0.02pH / ±2mV
Temp ±0.5 °C up 60 °C; ±1 °C outside

±1 °F up to 140 °F; ±2 °F outside

TYPICAL EMC DEVIATION

pH / ORP ±0.02 pH / ±2 mV
Temp ±0.2 °C or ±0.4 °F

TEMPERATURE COMPENSATION

Automatic from -5 to 80ºC

pH CALIBRATION Automatic, at 1 or 2 points
ORP CALIBRATION Factory calibrated
PROBE (included) MA923D/1

amplified pH/ORP/temperature probe

ENVIRONMENT 0 to 50°C; 100% RH max.
BATTERY TYPE 1 x 9V alkaline (included)
BATTERY LIFE approx. 500 hours of use
AUTO-OFF after 8 minutes of non-use
DIMENSIONS 200 × 85 × 50 mm

WEIGHT 260 g (with battery)
(*)

The temperature range is limited to 80°C (176°F) if using the

MA923D/1 probe.

• The meter automatically recognizes the
buffer value: if a valid buffer is detected,
then its value is displayed on
the LCD together with the
“REC” message, and the first
calibration point is accepted.

• The meter will then require the
second buffer by showing the
“pH 4.01 USE” message. Im­merse the probe in the second
buffer solution (pH 4.01 or

10.01 or 9.18). If a valid buffer
is recognized, the meter com­pletes the procedure, shows
the “OK 2” message for a few
seconds, then returns to the
normal mode.

Notes:

• If no valid buffer is detected,
the LCD will show the “WRNG”
message.

• For exiting the calibration after the first point
is accepted, press the “ON/OFF” button:
the LCD will show the “OK 1” message for
1 second and then returns to the normal
mode.
If using pH 4.01 or 10.01 (or 9.18) buffer
for the first calibration point, the meter will
exit the calibration mode after recognizing
the buffer value and showing the “OK 1”
message for 1 second.

• To quit the calibration procedure and return
to the last data, press “ON/OFF” after en­tering the calibration mode and before the
first point is accepted. The secondary LCD
shows the “ESC” message for 1 second
and the meter returns to the normal mode.

• To clear a previous calibration and reset to
the default value, press the “SET” key after
entering the calibration mode and before
the first point is accepted. The secondary
LCD shows the “CLR” message for 1 sec­ond, the meter resets to the default
calibration and the “CAL” tag on the LCD
disappears.

TAKING ORP MEASUREMENTS:

• Remove the protective cap and immerse
the electrode in MA9016 cleaning solution
for a few minutes.

• Select the ORP (mV) mode with the “SET”
key.

• Place the probe into the sample to be tested,
stir gently and wait for reading stabilization
(the clock symbol on the LCD disappears).

Note: The ORP range is factory calibrated.

Contact your dealer for recalibration, if
needed.

Note: ATC tag turns off because the mV read-

ings are not temperature compensated.

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 indicate a low battery condition.

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.

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 charge.

Damages due to accident, misuse, tampering or lack of prescribed maintenance are not
covered.

Note: We reserve the right to modify the design, construction and appearance of our

products without advance notice.