Milwaukee MAX MW160 User manual

INSTRUCTION MANUAL

SATISFACTION

GUARANTEED

MW160 MAX

pH / mV / ISE / Temperature

Bench Meter

All rights are reserved. Reproduction in whole or in part is prohibited without the written

consent of the copyright owner, Milwaukee Instruments Inc., Rocky Mount, NC 27804 USA.

THANK YOU for choosing Milwaukee Instruments!

This instruction manual will provide you the necessary information for correct use

of the meters.

TABLE OF CONTENTS

1. FUNCTIONAL DESCRIPTION......................................................................................................................................4

2. GENERAL DESCRIPTION.............................................................................................................................................6

3. SPECIFICATIONS............................................................................................................................................................. 7

4. OPERATIONAL GUIDE...................................................................................................................................................8

5. pH CALIBRATION ...........................................................................................................................................................11

6. pH BUFFER TEMPERATURE DEPENDENCE....................................................................................................14

7. RELATIVE mV CALIBRATION....................................................................................................................................15

8. ISE CALIBRATION .........................................................................................................................................................16

9. GOOD LABORATORY PRACTICE (GLP)..............................................................................................................19

10. LOGGING ........................................................................................................................................................................24

11. SETUP ...............................................................................................................................................................................28

12. mV CALIBRATION (for technical personnel only)..................................................................................30

13. TEMPERATURE CALIBRATION (for technical personnel only).........................................................31

14. PC INTERFACE.............................................................................................................................................................32

15. ELECTRODE CONDITIONING & MAINTENANCE.........................................................................................34

16. TROUBLESHOOTING.................................................................................................................................................36

17. ACCESSORIES............................................................................................................................................................... 37

CERTIFICATION..................................................................................................................................................................38

RECOMMENDATION........................................................................................................................................................38

WARRANTY..........................................................................................................................................................................38

4MW160 Bench Meter

1. FUNCTIONAL DESCRIPTION

DISPLAY

A. Primary display

B. Measuring unit for primary display

C. Calibration messages

D. Memorized ph calibration buers

E. Calibration tags

F. Mode indicators

G. Require user confirmation

H. Calibration messages

I. Temperature compensation mode indicator

J. Secondary display

K. Measuring unit for secondary display

L. Calibration requested

FUNCTIONAL DESCRIPTION 5

FRONT PANEL

1. Liquid Crystal Display (LCD)

2. CAL key, to enter/exit calibration

mode

3. MR key, to enter/exit memory recall

4. GLP/ACCEPT key, to display GLP

data or to confirm value

5. LOG/CLR key, to store reading in

memory or to clear calibration

6. SETUP key, to enter/exit setup

mode or to toggle between delete

one and all logged data

7. RANGE key, to select measurement

range or to switch focused data.

8. UP and DOWN arrow keys, to

manually increase/decrease

temperature or other parameters

value

9. ON/OFF key, to turn the meter ON

and OFF

10. Secondary LCD

11. Primary LCD

REAR PANEL

12. USB connector

13. RS232 connector

14. Power supply socket

15. Reference electrode socket

16. BNC electrode connector

1 7. Temperature probe socket

RS232

USB

pH/ORP

Ref.

Temp.

Power

12Vdc

6MW160 Bench Meter

2. GENERAL DESCRIPTION

Thank you for choosing Milwaukee Instruments. This instruction manual will provide you

the necessary information for correct use of the meter.

MW160 is a logging microprocessor-based pH, ORP, ISE and temperature bench meter.

This meter is provided with a series of new diagnostic features which add an entirely

new dimension to the measurement of pH/ORP/ISE, by allowing the user to dramatically

improve the reliability of the measurement:

y7 memorized buers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) for pH calibration

ypH calibration up to 3 points

yISE calibration up to 2 points; six standard solutions available: 0.01, 0.1, 1, 10, 100, 1000

ppm

yMessages on the LCD to make the calibration easy and accurate

yRelative mV feature

yGLP feature, to view last calibration data for pH or ISE

yUser-selectable alarm time out to alert the user that too much time elapsed since the

last pH calibration

yLog-on-demand (50 samples for each range: pH, mV/RelmV, ISE)

Moreover, it oers an extended temperature range from –20°C (–4 °F) to 120°C (248 °F),

using MA831R interchangeable temperature probe.

For accurate measurements, use the electrode holder supplied with the meter.

This Bench Meter is supplied with:

yMA917B/1 pH Electrode

yMA831R Temperature Probe

yMA9315 Electrode Holder

yM10004 pH 4.01 Sachet Buer Solution

yM10007 pH 7.01 Sachet Buer Solution

yM10010 pH 10.01 Sachet Buer Solution

yM10016 Sachet Electrode Cleaning Solution

yMi5200 Application Software

yMA9350 RS232 Connector cable (2 meters)

yGraduated Pipette

y12 VDC Adapter

yInstruction Manual

SPECIFICATIONS 7

3. SPECIFICATIONS

Range

-2.00 to 16.00 pH

±699.9 mV / ±2000 mV

0.001 to 19999 ppm (ISE)

-20.0 to 120.0°C (-4.0 to 248.0 °F)

Resolution

0.01 pH

0.1 mV / 1 mV

0.001 (0.001 to 9.999) ppm

0.01 (10.00 to 99.99) ppm

0.1 (100.0 to 999.9) ppm

1 (1000 to 19999) ppm

0.1°C (0.1 °F)

Accuracy (@ 20°C / 68 °F)

±0.01 pH

±0.2 mV / ±1 mV

±0.5% F.S. (ISE)

±0.4°C (±0.8 °F)

RelmV oset ±2000 mV

pH Calibration 1, 2 or 3 points calibration, with 7 memorized buers

ISE Calibration 1 or 2 points calibration, 6 standard solutions available

Temperature Compensation Automatic, from -20.0 to 120.0°C (-4.0 to 248.0 °F)

or manual, without temperature probe

pH Electrode MA917B/1 (included)

Temperature Probe MA831R (included)

Input Impedance 1012 ohm

Power supply 12 VDC power adapter

Dimensions 230 x 160 x 95 mm (9.0 x 6.3 x 3.7”)

Weight 1.1 kg (2.4 lb.)

Environment 0 to 50°C ; max RH 95%

Warranty 3 years

This instrument is in compliance with the CE Directives.

8MW160 Bench Meter

4. OPERATIONAL GUIDE

INITIAL PREPARATION

Plug the 12 VDC adapter to the power supply socket. To prepare the instrument for

use, connect the pH electrode to the BNC connector and the temperature probe to the

appropriate socket on the rear panel of the instrument. The temperature probe is used in

conjunction with the pH electrode to utilize the instrument’s ATC capability, but it can also

be used independently to take temperature measurements.

For electrodes with a separate reference, connect the electrode’s BNC to the BNC

connector and the reference electrode plug to the reference socket.

For temperature measurements and automatic temperature compensation connect

the temperature probe to the appropriate socket. After measurement switch the meter

o, clean the electrode and store it with a few drops of MA9015 storage solution in the

protection cap. The auto-o feature turns the meter o after 20 minutes of non-use. To

disable this feature, see SETUP.

The instrument enters the same range and mode as it was at power o, while the “OPEN”

tag and the “ ” and “ ” symbols from the electrode blink on the LCD for a few seconds

to remind the user to unscrew the electrode refilling cap, and to remove the protective

cap before taking measurements.

pH MEASUREMENTS

Make sure the instrument has been calibrated before taking pH measurements.

ySubmerge the tip of the electrode (4cm/1½”) and the temperature probe into the

sample to be tested and stir gently. Allow for the electrode to stabilize.

yIf necessary, press the RANGE key until the display changes to pH mode.

yThe pH measurement is displayed on the primary LCD and the temperature on the

secondary LCD.

yIf the reading is out of range, the closest full-scale value will blink on the primary LCD.

OPERATIONAL GUIDE 9

If measurements are taken successively in dierent samples, it is recommended to rinse

the electrode thoroughly with water and then with some of the sample to be tested.

The pH reading is aected by temperature. In order to measure the pH accurately,

the temperature eect must be compensated. To use the Automatic Temperature

Compensation (ATC) feature, connect and submerge the MA831R temperature probe into

the sample as close as possible to the electrode and wait for a few seconds. The “ATC” tag

will be displayed.

If Manual Temperature Compensation (MTC) is desired, the temperature probe must be

disconnected from the instrument.

The display will show the default temperature of 25°C or the last temperature reading

with the blinking “MTC” and “°C” (or “°F”) tags.

The temperature can now be adjusted with the UP and DOWN arrow keys (from –20.0°C to

120.0°C).

mV / RELmV MEASUREMENTS

An optional ORP electrode must be used to perform ORP measurements (see

ACCESSORIES).

Oxidation-Reduction Potential (ORP) measurements provide the quantification of the

oxidizing or reducing power of the tested sample.

To perform an ORP measurement correctly, the surface of the electrode must be clean and

smooth.

yIf necessary, press the RANGE key until the display changes to mV/RelmV.

ySubmerge the ORP electrode tip (4cm/1½”) into the sample to be tested and allow a

few seconds for the reading to stabilize.

10 MW160 Bench Meter

yThe instrument displays the mV reading on the primary LCD or RelmV reading if a

RelmV calibration has been performed and the temperature on the secondary LCD.

Notes:

When the reading is out of range, the closest full-scale value is displayed blinking.

If using a pH electrode while in mV mode, the instrument will measure the mV generated

by the pH electrode.

If the instrument displays a RelmV reading and it is desired to take mV measurements,

simply clear the RelmV calibration (see RelmV calibration section).

ISE MEASUREMENTS

yPress the RANGE key to enter ISE measurement mode.

ySubmerge the tip of the ISE electrode (4 cm/1½”) into the sample to be tested and

allow a few seconds for the reading to stabilize.

yThe instrument displays the ppm reading on the primary LCD and the temperature on

the secondary LCD.

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