Milwaukee MW105 MAX User manual

INSTRUCTION MANUAL
SATISFACTION
GUARANTEED
MW105 & MW106 MAX
pH / ORP / Temperature
Portable Meters

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.

3
TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION..............................................................................4
2. INSTRUMENT OVERVIEW .....................................................................................5
3. SPECIFICATIONS........................................................................................................6
4. FUNCTIONAL & DISPLAY DESCRIPTION.......................................................8
5. MA906BR/1 pH & Temperature Probe.........................................................13
6. GENERAL OPERATIONS........................................................................................ 14
6.1. BATTERY MANAGEMENT & REPLACEMENT................................... 14
6.2. CONNECTING THE PROBE....................................................................... 14
6.3. ELECTRODE CARE & MAINTENANCE................................................ 15
7. SETUP..............................................................................................................................17
7.1. SETUP OPTIONS...............................................................................................17
8. pH ....................................................................................................................................23
8.1. PREPARATION.................................................................................................23
8.2. CALIBRATION.................................................................................................23
8.3. MEASUREMENT........................................................................................... 26
8.4. WARNINGS & MESSAGES.......................................................................27
9. ORP ..................................................................................................................................31
9.1. PREPARATION ..................................................................................................31
9.2. MEASUREMENT.............................................................................................31
10. LOGGING (MW106) ...............................................................................................32
10.1. TYPES OF LOGGING ...................................................................................32
10.2. DATA MANAGEMENT ............................................................................... 35
11. MEM & MR FUNCTIONS (MW105)................................................................ 42
12. GLP ............................................................................................................................... 43
13. TROUBLESHOOTING............................................................................................ 44
14. ACCESSORIES.........................................................................................................45
CERTIFICATION............................................................................................................. 46
RECOMMENDATION...................................................................................................46
WARRANTY.....................................................................................................................46

4MW & MW Portable Meters
1. PRELIMINARY EXAMINATION
Each MW105 & MW106 portable meter is delivered in a rugged
carrying case and is supplied with:
yMA906BR/1 amplified pH/temperature probe
yM10004 pH 4.01 buer solution (20 mL sachet)
yM10007 pH 7.01 buer solution (20 mL sachet)
yM10010 pH 10.01 buer solution (20 mL sachet)
yM10016 electrode cleaning solution (20 mL sachet)
y1.5V alkaline AA battery (3 pcs.)
yMicro USB cable (MW106)
yInstrument quality certificate
yInstruction manual

INSTRUMENT OVERVIEW 5
2. INSTRUMENT OVERVIEW
MW105 and MW106 meters combine the main features of a
benchtop unit into a portable, IP67 rated meter.
The meters perform accurate measurements and present a series
of new diagnostic features for improved reliability.
yEasy to read LCD display
yAuto-o feature to prolong battery life
yInternal clock and date to keep track of time-dependent
functions (calibration timestamp, calibration time out)
yUp to 3-point (5-point, MW106) automatic pH calibration,
using 7standard buers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and
12.45) and 2custom buers (MW106)
yAvailable log space for up to 1000 records (MW106)
yLogged data can be exported using a USB cable
yDedicated GLP key to store and recall data on system status
Note: For direct ORP measurements, with mV readings in
the ±2000 mV range, users can replace the MA906BR/1
pH/temperature probe for an ORP probe.

6MW & MW Portable Meters
3. SPECIFICATIONS
MW105 MW106
Range *
pH –2.00 to 20.00 pH –2.00 to 20.00 pH
–2.000 to 20.000 pH
mV ±2000.0 mV ±2000.0 mV
Temp. –20.0 to 120.0 °C
(–4.0 to 248.0 °F)
–20.0 to 120.0 °C
(–4.0 to 248.0 °F)
Resolution
pH 0.01 pH 0.01 pH
0.001 pH
mV 0.1 mV 0.1 mV
Temp. 0.1 °C (0.1 °F) 0.1 °C (0.1 °F)
Accuracy *
@ 25 °C
(77 °F)
pH ±0.02 pH ±0.01 pH
±0.002 pH
mV ±1 mV ±1 mV
Temperature
accuracy *
±0.5 °C for -5.0 to 60.0 °C (±1 °C outside)
±1 °F for 23.0 to 140.0 °F (±2 °F outside)
pH
calibration
Automatic, 7 standard buers
(1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45)
up to 3-point up to 5-point
— 2 custom buers
ORP calibration Factory calibrated
Temperature
compensation *
ATC – automatic
MTC – manual, without temperature probe
–20.0 to 120.0 °C (–4.0 to 248.0 °F)
Memory Memory & Recall
function
Max. 1000 log records
(stored in up to 100 lots)
On demand, 200 logs
On stability, 200 logs
Interval logging, 1000 logs
PC connectivity — 1 micro USB port
Battery type 3 x 1.5V alkaline AA
Battery life Approx. 200 hours
Environment 0 to 50°C (32 to 122 °F); maximum RH 95%
Dimensions 200 x 85 x 50 mm; (7.9 x 3.3 x 2.0”)
Casing IP protection level
Weight 260 g (0.57 lb)
* Limits will be reduced to actual sensor limits.

SPECIFICATIONS 7
PROBE SPECIFICATIONS
pH probe
MA906BR/1
Amplified pH/temperature
Temperature range –5 to 70 °C (23 to 123 °F)
pH range 0 to 12 pH
pH accuracy ±0.02 pH
Cable length 1 m (3.2 ft)

8MW & MW Portable Meters
4. FUNCTIONAL & DISPLAY DESCRIPTION
MW105 Front Panel
1
2
3
4
5
6
7
8
9
10
1. Liquid Crystal Display (LCD)
2. ESC key, to exit current mode
3. MR key, to recall the stored value
4. MEM/CLEAR key, to store the reading or to clear calibration
or memory
5. SETUP key, to enter Setup mode
6. ON/OFF key
7.  directional keys (menu navigation, setting parameters)
8. RANGE/key, to select pH or mV
9. CAL/EDIT key, to enter / edit calibration settings, setup settings
10. GLP/ACCEPT key, to enter GLP or to confirm selected action

FUNCTIONAL & DISPLAY DESCRIPTION 9
MW106 Front Panel
1
2
3
4
5
6
7
8
9
10
1. Liquid Crystal Display (LCD)
2. ESC key, to exit current mode
3. RCL key, to recall logged values
4. LOG/CLEAR key, to log the reading or to clear calibration or
logging
5. SETUP key, to enter Setup mode
6. ON/OFF key
7.  directional keys (menu navigation, setting parameters)
8. RANGE/key, to select pH or mV
9. CAL/EDIT key, to enter / edit calibration settings, setup settings
10. GLP/ACCEPT key, to enter GLP or to confirm selected action

10 MW & MW Portable Meters
MW105 Top Panel
1
2
1. RCA probe socket
2. BNC probe socket
MW106 Top Panel
1
4
3
2
1. RCA probe socket
2. Micro USB port cap
3. Micro USB port
4. BNC probe socket

FUNCTIONAL & DISPLAY DESCRIPTION 11
MW105 Display Description
1
2
6
4
3
7
8
5
12
11
10
9
14
15
16
13
1. Mode tags
2. Battery status
3. Stability indicator
4. CAL tag and pH calibration buers
5. Probe symbol
6. ACCEPT tag
7. Third LCD line, message area
8. Measurement units
9. First LCD line, measurement readings
10. Arrow tags, to navigate the menu in either direction
11. DATE tag
12. Temperature compensation status (MTC, ATC)
13. Temperature and measurement units
14. Second LCD line, temperature readings
15. Oset / Slope indicators
16. TIME tag

12 MW & MW Portable Meters
MW106 Display Description
1
2
3
9
8
5
6
4
10
11
7
15
14
13
12
17
18
19
16
1. Mode tags
2. Battery status
3. Percentage tag
4. Stability indicator
5. USB / PC connection status
6. CAL tag and pH calibration buers
7. Probe symbol and probe condition
8. LOG tag
9. ACCEPT tag
10. Third LCD line, message area
11. Measurement units
12. First LCD line, measurement readings
13. Arrow tags, to navigate the menu in either direction
14. DATE tag
15. Temperature compensation status (MTC, ATC)
16. Temperature and measurement units
1 7. Second LCD line, temperature readings
18. Oset / Slope indicators
19. TIME tag

MA906BR/1 pH & Temperature Probe 13
5. MA906BR/1 pH & Temperature Probe
1
2
4
3
1. Strain relief
2. Probe body
3. RCA probe connector
4. BNC probe connector

14 MW & MW Portable Meters
6. GENERAL OPERATIONS
6.1. BATTERY MANAGEMENT & REPLACEMENT
The meters are supplied with 3 x 1.5V alkaline AA batteries and
equipped with Battery Error Prevention System (BEPS) feature,
which turns the meter o after 10 minutes of non-use (see SETUP
OPTIONS, Auto O section).
At power on, the instruments perform an auto-diagnostic test and
all LCDsegments are displayed for a few seconds.
Use  keys to check the battery percentage.
To replace the batteries
1. Turn the meter o.
2. Remove the 4 screws on the back of the meter to open the
battery compartment.
3. Remove the old batteries.
4. Insert the three new 1.5V AA batteries while paying attention
to their polarity.
5. Close the battery compartment using the 4 screws.
6.2. CONNECTING THE PROBE
With the meter o, connect the MW906BR/1 probe’s connectors
to the BNC and RCA sockets on the top of the meter.
Note: When the temperature sensor is not connected,
temperature can be set manually by pressing CAL/EDIT then
using  keys. See SETUP OPTIONS, MTC Mode section.

GENERAL OPERATIONS 15
6.3. ELECTRODE CARE & MAINTENANCE
Calibrating & Conditioning
Maintaining a pH electrode is critical to ensure proper and reliable
measurements.
Frequent 2- or 3-point calibrations are recommended to ensure
accurate and repeatable results.
Prior to using the electrode for the first time
1. Remove the protective cap. Do not be alarmed if salts deposits
are present, this is normal. Rinse the electrode with distilled
or deionized water.
2. Place the electrode in a beaker containing MA9016 Cleaning
solution for a minimum of 30 minutes.
Note: Do not condition a pH electrode in distilled or deionized
water as this will damage the glass membrane.
3. After conditioning, rinse the sensor with distilled or deionized
water.
Note: To ensure quick response and avoid cross‑contamination,
rinse the electrode tip with the solution to be tested before
measurement.
Best practice when handling an electrode
yElectrodes should always be rinsed between samples with
distilled or deionized water.
yDo not wipe an electrode as wiping can cause erroneous
readings due to static charges.
yBlot the end of the electrode with lint-free paper.
Storage
To minimize clogging and ensure quick response time, the glass
bulb and the junction should be kept hydrated.
Add a few drops of MA9015 Storage solution to the protective cap.
Replace the storage cap when the probe is not in use.
Note: Never store the probe in distilled or deionized water.

16 MW & MW Portable Meters
Regular Maintenance
yInspect the probe. If cracked, replace the probe.
yInspect the cable. Cable and insulation must be intact.
yConnectors should be clean and dry.
yRinse o salt deposits with water.
yFollow storage recommendations.
If electrodes are not maintained correctly both accuracy and
precision are aected. This can be observed as a steady decrease
in the slope of the electrode.
The slope (%) indicates the sensitivity of the glass membrane,
the oset value (mV) indicates the age of electrode and provides
an estimation when the probe needs to be changed. The slope
percentage is referenced to the ideal slope value at 25 °C.
Milwaukee Instruments recommends that the oset does not
exceed ±30 mV and that the slope percentage is between 85-105%.
When the slope value drops below 50 mV per decade (85%
slope eiciency) or the oset at the zero point exceeds ±30mV,
reconditioning may improve performance, but a change of
electrode may be necessary to ensure accurate pH measurements.
Electrode Status (MW106)
MW106 displays electrode status after calibration. See probe icon
on the LCD screen. The assessment remains active for 12 hours
and is based on the electrode oset and slope during calibration.
5 bars Excellent condition
4 bars Very good condition
3 bars Good condition
2 bars Fair condition
1 bar Poor condition
1 bar blinking Very poor condition
no bar Not calibrated
Recommendations:
y1 bar: Clean the electrode and recalibrate. If there is still only
1bar or 1bar blinking after recalibration, replace the probe.
yNo bar: Instrument was not calibrated on current day or a
one-point calibration was performed with previous calibration
not yet deleted.

SETUP 17
7. SETUP
To configure the meter settings, modify default values or set
measurement parameters:
yPress SETUP to enter (or exit) Setup mode
yUse  keys to navigate the menus (view parameters)
yPress CAL/EDIT to enter Edit mode (modify parameters)
yPress RANGE/key to select between options
Use  keys to modify values (value being modified is
displayed blinking)
yPress GLP/ACCEPT to confirm and save changes (ACCEPT tag
is displayed blinking)
yPress ESC (or CAL/EDIT again) to exit Edit mode without
saving (return to menu)
7.1 . SETUP OPTIONS
Log Type (MW106)
Options: INTERVAL (default), MANUAL or STABILITY
Press RANGE/to select between options.
Use  keys to set time interval: 5 (default), 10, 30 sec. or 1, 2, 5,
15, 30, 60, 120, 180 min.
Use  keys to select stability type: fast (default), medium or
accurate.

18 MW & MW Portable Meters
Calibration Expired Warning
Options: 1 to 7 days (default) oro
Use  keys to select the number of days since last calibration
has elapsed.
pH Information
Options: On (default) or O (disabled)
Use  keys to select.
Displays pH buer calibration information. When enabled, the
electrode symbol displays the electrode condition (MW106).
First Custom Buer (MW106)
Press RANGE/to set a default buer value as starting value.
Use  keys to set the value of the first custom buer.
Second Custom Buer (MW106)
Press RANGE/to set a default buer value as starting value.
Use  keys to set the value of the second custom buer.

SETUP 19
pH Resolution (MW106)
Options: 0.01 (default) and 0.001
Use  keys to select.
Out of Calibration Range Warning
Options: On (default) or O (disabled)
Use  keys to select.
Date
Options: year, month or day
Press RANGE/to select. Use  keys to modify the values.

20 MW & MW Portable Meters
Time
Options: hour, minute or second
Press RANGE/to select. Use  keys to modify the values.
Auto O
Options: 5, 10 (default), 30, 60 minutes or o
Use  keys to select the time.
The meter will power o after set period of time.
Sound
Options: enable (default) or disable
Use  keys to select.
When pressed, each key will emit a short acoustic signal.
Temperature Unit
Options: °C (default) or °F.
Use  keys to select the unit.