Milwaukee Instruments MW102 User's Manual

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Milwaukee Instruments MW102 User's Manual | Manualzz

Milwaukee

USER MANUAL

PORTABLE uP-BASED pH METER

MODEL: MW102

Smart pH 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 electrode 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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OPERATION:

• The meter is supplied complete with a 9V battery. Slide off the battery compartment cover on the back of the meter and install the battery into battery clip connector while observing polarity.

• 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 rinse solution (M10000B) for a few minutes to reactivate it.

• Connect the pH electrode and the t e m p e r a t u r e probe to the sockets on the meter’s top. The temperature probe c a n b e u s e d independently to take temperature measurements, or it can be used in conjunction with the pH electrode to utilize the meter’s ATC capability.

• Turn the instrument on by pressing the

ON/OFF key.

• Before taking any measurements, make sure that the meter has already been calibrated.

• Immerse the tip (2.5 cm) of the pH electrode and the temperature probe into the sample and stir gently.

• The pH measurement is ready when the hourglass symbol stops blinking.

• To display the measured temperature, press and hold the

°C key.

When the key is released, the display will return to the pH reading.

• The HOLD function is activated by pressing the HOLD key. The measured value is frozen on the display and the “HOLD” tag lights up. Release “HOLD” by pressing HOLD key again.

• After completing measurements, switch the meter off and store the electrode with a few drops of storage solution in the protective cap.

• Error message on display:

• Blinking full scale value: reading is over range;

• “Eb”: battery low voltage indication;

• “Ec”: wrong buffer solution;

• “Clr”: the calibration data have been lost and recalibration is needed.

CALIBRATION PROCEDURE:

A) Preparation:

Select two pH calibration buffers: pH 7.01

and a second to bracket your measurement range.

1. pH 7.01 (MA9007)

2. pH 4.01 (MA9004) for measuring in the acid range (pH lower than 7) or

pH 10.01 (MA9010) for measuring in the alkaline range (pH higher than 7).

Use two beakers for each reference solution.

One beaker for rinsing the electrode, the other for calibration. This way contamination between solutions during calibration is minimized.

B) Procedure:

Offset calibration

• Remove the electrode protective cap and rinse the tip with some pH 7.01

solution, then immerse the electrode tip and the temperature probe into a pH 7.01 buffer solution.

• Press the CAL key to enter the Calibration mode. The display flashes “pH 7.01” and the hourglass lights up.

• Wait till the hourglass symbol on the display turns off and the “pH” tag stops blinking, then press the CFM key to confirm the offset calibration.

Note: Pressing the CAL key again will change the buffer value, allowing a single point calibration at pH 4.01

or pH 10.01.

Slope calibration

• After completing the pH 7.01 calibration the next buffer pH 4.01 will flash on the display.

• Press CAL key to display pH 10.01 if desired.

• Rinse the pH electrode and the temperature probe in the rinse buffer beaker, then immerse them into the second buffer beaker.

• Wait till the hourglass symbol on the

LCD turns off, then press the CFM key to confirm the slope calibration.

Notes:

• To exit the calibration mode, turn the meter off by pressing the ON/OFF key.

• To perform a single point calibration

(offset) at pH 7.01, press the ON/OFF key when the second buffer is displayed.

• After battery replacement, the meter displays the “Clr” message and recalibration is needed.

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BATTERY REPLACEMENT:

When the battery becomes weak a reliable measurement can not be guaranteed. The meter will display “Eb” for a while and then turn off.

Prompt battery replacement is required.

Battery replacement must only take place in a non-hazardous area using a 9V alkaline battery.

Turn the meter off, slide the battery compartment cover located at the rear of the meter off and replace the 9V battery with a new one.

M a k e s u r e t h e b a t t e r y contacts are fully engaged in the connector, seat the battery in its compartment and replace the cover.

OPTIONAL ACCESSORIES:

MA 9004 pH4.01 buffer solution,

220 mL bottle

MA 9007

MA 9010

MA 9015

MA 9016

M10000B

MA911B/1

MA830R

MA950 pH7.01 buffer solution,

220 mL bottle pH10.01 buffer solution,

220 mL bottle

Electrode storage solution,

220 mL bottle

General cleaning solution,

220 mL bottle

Rinse solution, 20 mL sachet (25 pcs.) pH electrode with BNC connector and 1 m cable

Temperature probe

Portable meter wall mounting kit

SPECIFICATIONS:

MW102

RANGE -2.00 to 16.00 pH

-5 to 70°C

0.01 pH / 0.1°C RESOLUTION

ACCURACY (@25°C) ±0.02 pH / ±0.5°C

TYPICAL EMC DEV.

±0.02 pH / ±0.5°C

TEMPERATURE Automatic,

COMPENSATION 0 to 70°C

CALIBRATION Automatic, at 1 or 2 points

pH ELECTRODE MA911B/1 (included)

TEMPERATURE

PROBE

MA830R (included)

ENVIRONMENT 0 to 50°C; RH 95% max.

BATTERY TYPE 1 x 9V alkaline (included)

BATTERY LIFE approx. 750 hours of use

AUTO-OFF after 8 minutes of non-use

DIMENSIONS

WEIGHT

143 x 80 x 32 mm

220 g (with battery)

ISTMW102 01/10

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