Milwaukee MW605 MAX User manual

INSTRUCTION MANUAL
SATISFACTION
GUARANTEED
MW605 MAX
Dissolved Oxygen
& Temperature
Portable 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 meter.

3
TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION..............................................................................4
2. INSTRUMENT OVERVIEW .....................................................................................5
3. SPECIFICATIONS........................................................................................................6
4. FUNCTIONAL & DISPLAY DESCRIPTION.......................................................8
5. MA860 PROBE DESCRIPTION........................................................................... 10
6. GENERAL OPERATIONS..........................................................................................11
6.1. BATTERY MANAGEMENT.............................................................................11
6.2. PROBE PREPARATION ................................................................................12
6.3. PROBE MAINTENANCE ..............................................................................13
7. SETUP............................................................................................................................. 14
7.1. SETUP OPTIONS.............................................................................................. 14
8. ALTITUDE & SALINITY COMPENSATION .................................................... 20
9. CALIBRATION..............................................................................................................21
10. MEASUREMENT......................................................................................................24
11. LOGGING..................................................................................................................... 26
11.1. TYPES OF LOGGING.................................................................................... 26
11.2. DATA MANAGEMENT ................................................................................ 28
12. GLP ............................................................................................................................... 36
12.1. DO INFORMATION ...................................................................................... 36
13. TROUBLESHOOTING.............................................................................................37
14. ACCESSORIES..........................................................................................................37
CERTIFICATION............................................................................................................. 38
RECOMMENDATION................................................................................................... 38
WARRANTY..................................................................................................................... 38

4MW605 Dissolved Oxygen & Temperature Portable Meter
1. PRELIMINARY EXAMINATION
MW605 portable meter is delivered in a rugged carrying case and
is supplied with:
yMA860 Dissolved Oxygen and Temperature galvanic probe
with internal temperature sensor, DIN connector and cable
yMA861 Dissolved Oxygen membrane with o-ring (2 pcs.)
yMA9072S Oxygen electrolyte solution
yProbe protective cap
y.V alkaline AA battery (3 pcs.)
yMicro USB cable
yInstrument quality certificate
yInstruction manual

INSTRUMENT OVERVIEW 5
2. INSTRUMENT OVERVIEW
MW605 is a portable, IP rated meter designed for fresh and
saltwater measurements of dissolved oxygen (DO).
The MW605 meter is compatible with MA860 galvanic DO probe.
Galvanic probes require no conditioning and thus the instrument
is ready to measure when it is powered on.
Concentration measurements are automatically compensated for
temperature and salinity.
Temperature is automatically measured (in both degree Celsius
and Fahrenheit) and compensated.
Salinity and altitude can be configured in Setup.
Other features include:
yEasy to read LCD display
yAuto-o feature to prolong battery life
yOne or two % saturation calibration points at 100% (water
saturated air) and 0% (zero oxygen solution)
yDedicated GLP key to store and recall data on system status
yAvailable log space for up to 1000 records
yLogged data can be exported using a USB cable

6MW605 Dissolved Oxygen & Temperature Portable Meter
3. SPECIFICATIONS
Range DO * 0.00 to 45.00 mg/L (ppm)
0.0 to 300.0 % saturation
Temperature ** -20.0 to 120.0 °C (-4.0 to 248.0 °F)
Resolution DO 0.01 mg/L (ppm)
0.1 % saturation
Temperature 0.1 °C (0.1 °F)
Accuracy DO ±1.5 % of reading ±1 digit
Temperature ±0.4 °C (±0.8 °F)
Calibration One or two % saturation calibration points
0% (MA9070) and 100% (water saturated air)
Temperature
compensation Automatic, from 0.0 to 50.0 °C (32.0 to 122.0 °F)
Salinity
compensation Manual, from 0 to 40 g/L (with 1 g/L resolution)
Altitude
compensation
-500 to 4,000 m (-1640’ to 13123’)
with 100 m (328’) resolution
Logging
memory
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 (included)
Battery life Approx. 200 hours of use
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”)
Case IP rating
Weight 260 g (0.57 lb)
* DO measurement is performed within the automatic temperature
compensation interval.
** Limits will be reduced to actual sensor limits.

SPECIFICATIONS 7
PROBE SPECIFICATIONS
D0 probe
MA860
DO sensor Galvanic
Temperature range 0.0 to 50.0 °C (32.0 to 122.0 °F)
Temperature sensor Built-in thermistor
Cathode Silver
Anode Zinc
Membrane Oxygen permeable PTFE
Connector socket DIN, 7 pins
Body PP, ABS, IP rating
Dimensions Total length: 160 mm (6.3”)
Ø 32 mm (1.26”)
Cable Jacket material: PP

8MW605 Dissolved Oxygen & Temperature Portable Meter
4. FUNCTIONAL & DISPLAY DESCRIPTION
Front Panel
10
9
8
7
6
1
2
3
4
5
1. Liquid Crystal Display (LCD)
2. ESC key, to exit current mode
3. RCL key, to recall the 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 setup parameters and toggle
between measurement units (%Sat or mg/L)
9. CAL/EDIT key, to enter or edit calibration settings, setup settings
10. GLP/ACCEPT key, to enter GLP or to confirm selected action

FUNCTIONAL & DISPLAY DESCRIPTION 9
Top Panel
2
3
1
1. Micro USB port
2. Micro USB port cap
3. DIN probe connector
Display Description
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
1. Mode tags
2. Battery status
3. Stability indicator
4. USB connection status
5. Arrow tags (menu navigation)
6. Probe symbol
7. LOG tag
8. ACCEPT tag
9. Third LCD line
(message area)
10. Measurement units
11. First LCD line
(measurement readings)
12. DATE tag
13. Automatic temperature
compensation (ATC) tag
14. Temperature units
15. Second LCD line
(temperature readings)
16. Measurement units for
salinity and altitude
1 7. TIME tag

10 MW605 Dissolved Oxygen & Temperature Portable Meter
5. MA860 PROBE DESCRIPTION
The MA860 probe uses a galvanic sensor with a built-in thermistor
that allows stable, temperature compensated readings.
The sensor makes use of a cathode, anode and electrolyte solution,
protected by an oxygen permeable membrane. Oxygen that passes
through the membrane causes a current flow, from which the
oxygen concentration is determined. The membrane is fixed to a
detachable cap that allows for simple replacement and priming.
The probe has a reinforced plastic body for durability.
1
2
3
45
6
7
8
1. Cable jacket
2. Probe body
3. Temperature sensor
4. O-ring seal
5. Membrane cap
6. Oxygen permeable membrane PTFE
7. Zinc anode element
8. Silver cathode (sensor)

GENERAL OPERATIONS 11
6. GENERAL OPERATIONS
6.1. BATTERY MANAGEMENT
The meter is supplied with 3 x 1.5V alkaline AA batteries.
To replace the batteries, follow the next steps:
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.
Note: The meter is equipped with Battery Error Prevention
System (BEPS) which automatically switches the meter o if
battery level is not adequate to guarantee an accurate reading.

12 MW605 Dissolved Oxygen & Temperature Portable Meter
6.2. PROBE PREPARATION
DO probes shipped from Milwaukee Instruments are dry. Prepare
the supplied MA860 probe before connecting it to the meter.
After preparation, connect to the DIN connector by aligning the
pins with the socket and firmly pushing the plug in.
Note: No conditioning period is required when using MA
DO probe.
Changing the membrane cap
1. For new probes, remove the red and black shipping cap.
2. Open the supplied membrane package and remove one
o-ring and one membrane cap.
3. Prepare the sensor by soaking the bottom 2½ cm (1”) in
MA9072S electrolyte solution for 5 minutes.
4. Inspect the membrane cap. The membrane is thin and can not
be repaired if damaged.
5. Position the o-ring. Prime the cap with electrolyte solution.
Shake gently, discard and refill with clean solution making
sure to cover the o-ring.
6. Gently tap the side of the cap to remove trapped air bubbles.
Do not tap on the membrane directly as it may damage it.
7. With the sensor facing downward, slowly screw the cap
upward and counter clockwise. Some electrolyte will overflow.
8. Rinse the outer body of the probe and inspect the membrane
for trapped gas bubbles. The cathode area should be free of
bubbles.
Fill
Tap
Screw
back on
Position
the O-ring

GENERAL OPERATIONS 13
6.3. PROBE MAINTENANCE
The silver cathode should always be bright and untarnished. If it
is tarnished or stained, the cathode should be cleaned gently with
a lint-free cloth.
yRinse the probe with deionized or distilled water.
yReplace the membrane cap using fresh electrolyte. See
PROBE PREPARATION procedure.
yRecalibrate the meter.
Membrane Maintenance
For accurate and stable measurements, perfect condition of the
membrane surface is needed. Protect the thin membrane from
scratches, abrasion or contact with solids.
If no measurements are taken for a few hours, protect the
membrane with the plastic protective cap.
If fouled, rinse it carefully with distilled or deionized water. If
damaged, replace the membrane cap.
Note: Change the membrane every 8 weeks or more frequently
if used in a specially fouling environment. Check and replace
the electrolyte fill solution every 4 weeks.
Storage
After taking the measurements, switch the meter o and clean the
probe before storage. When not in use the probe should be stored
with the plastic protective cap on.
For short term storage, the probe can also be stored in a beaker of
deionized water with the protective plastic cap removed.
For long term storage, the probe should be stored dry:
1. Disconnect the probe from the meter
2. Unscrew the membrane cap
3. Remove any electrolyte solution from the cap
4. Rinse the probe anode/cathode assembly with distilled water
and blot dry
5. Screw the membrane cap onto the probe until the membrane
cap is hand tight

14 MW605 Dissolved Oxygen & Temperature Portable Meter
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
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.

SETUP 15
Calibration Expired Warning
Options: 1 to 7 days (default) oro
Use  keys to select the number of days since last calibration
has elapsed.
Altitude Compensation
Options: -500 to 4000 m
Use  keys to set the appropriate altitude of the location.
Salinity Compensation
Options: 0 to 40 g/L
Use  keys to modify the value.

16 MW605 Dissolved Oxygen & Temperature Portable Meter
Dissolved Oxygen Unit
Options: ppm or mg/L
Press RANGE/to navigate right and select the unit.
Date
Options: year, month or day
Press RANGE/to select options. Use  keys to modify the values.
Time
Options: hour, minute or second
Press RANGE/to select. Use  keys to modify the values.

SETUP 17
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.

18 MW605 Dissolved Oxygen & Temperature Portable Meter
LCD Contrast
Options: 1 to 9 (default)
Use  keys to select LCD contrast values.
Default Values
Resets meter settings to factory defaults.
Press GLP/ACCEPT to restore the default values. “RESET DONE”
message confirms that the meter performs with default settings.
Instrument Firmware Version
Displays the installed firmware version.

SETUP 19
Meter ID / Serial Number
Use  keys to assign a meter ID from 0000 to 9999.
Press RANGE/to view the serial number.
Separator Type
Options: comma (default) or semicolon
Use  keys to select the columns separator for the CSV file.
Export to PC / Log on Meter
Options: Export to PC and Log on Meter
With the micro USB cable connected, press SETUP. Press CAL/EDIT
to enter Edit mode.
Use  keys to select.
Note: This option is only available while connected to a PC.
The USB/PC icon is not shown if LOG ON METER option was
previously set.

20 MW605 Dissolved Oxygen & Temperature Portable Meter
8. ALTITUDE & SALINITY COMPENSATION
Temperature, pressure (altitude) and salinity influence DO
concentration.
Cold water holds more oxygen and therefore DO concentration
increases with decreasing temperature. Compensation for
temperature-related solubility is done automatically using the
probe’s built in temperature sensor.
Altitude compensation
When measurements are done at an altitude below sea level,
oxygen solubility increases. Conversely for measurements made
above sea level, the oxygen solubility decreases.
Select the approximate altitude in the SETUP menu (see Altitude
Compensation for details).
Salinity compensation
The solubility of oxygen in water is also influenced by the amount
of salt in the water.
Freshwater holds more oxygen than saltwater does.
Seawater typically has a salinity of 35 g/L and the oxygen
solubility is 18 % less compared to fresh water at 25 °C. By entering
the approximate salinity value, the calibration and subsequent
concentration measurement will be compensated to display the
correct oxygen concentration. A 18 % error would result if the
salinity value is not entered.
The solubility of oxygen dissolved in water decreases in brackish
or seawater; or for measurements made at above sea level altitude.