Milwaukee MW190 MAX User manual

INSTRUCTION MANUAL
SATISFACTION
GUARANTEED
MW190 MAX
Dissolved Oxygen & 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 meter.

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TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION...................................................................................................................................4
2. INSTRUMENT OVERVIEW ..........................................................................................................................................5
3. SPECIFICATIONS.............................................................................................................................................................6
4. FUNCTIONAL & DISPLAY DESCRIPTION............................................................................................................8
5. MA845 PROBE DESCRIPTION.................................................................................................................................11
6. GENERAL OPERATIONS............................................................................................................................................. 12
6.1. POWER CONNECTION & BATTERY MANAGEMENT..........................................................................12
6.2. PROBE PREPARATION.....................................................................................................................................12
6.3. PROBE MAINTENANCE...................................................................................................................................14
7. SETUP..................................................................................................................................................................................15
7.1. SETUP OPTIONS...................................................................................................................................................15
8. ALTITUDE & SALINITY COMPENSATION..........................................................................................................21
9. CALIBRATION.................................................................................................................................................................22
10. MEASUREMENT..........................................................................................................................................................25
11. LOGGING.......................................................................................................................................................................... 27
11.1. TYPES OF LOGGING ......................................................................................................................................... 27
11.2. DATA MANAGEMENT......................................................................................................................................29
12. GLP....................................................................................................................................................................................36
12.1. DO INFORMATION............................................................................................................................................36
13. TROUBLESHOOTING................................................................................................................................................. 37
14. ACCESSORIES.............................................................................................................................................................. 37
CERTIFICATION..................................................................................................................................................................38
RECOMMENDATION........................................................................................................................................................38
WARRANTY..........................................................................................................................................................................38

4MW190 Dissolved Oxygen & Temperature Bench Meter
1. PRELIMINARY EXAMINATION
Each bench meter is delivered in a cardboard box and is supplied with:
yMA845 Dissolved Oxygen and Temperature polarographic probe
yMA841 Membrane cap and o-ring (2 pcs.)
yMA9071 Electrolyte solution
yMA9315 Electrode holder
yProbe protective cap
y12 VDC adapter
yUSB cable
yInstrument quality certificate
yInstruction manual

INSTRUMENT OVERVIEW 5
2. INSTRUMENT OVERVIEW
MW190 is a compact and versatile bench meter designed for testing dissolved oxygen in
the pharmaceutical and food industry, as well as monitoring in water treatment plants.
Concentration measurements are automatically compensated for temperature and
salinity. Salinity and altitude can be configured in Setup.
Temperature is automatically measured (in both degree Celsius and Fahrenheit) and
compensated.
Other features include:
yEasy to read LCD display
yBuilt-in rechargeable battery with an 8-hour capacity
yAuto-o feature to prolong battery life
yBattery charger with battery monitor
yInternal clock and date to keep track of dierent time-dependent functions (calibration
timestamp, calibration time out)
yMeasurement logging (on demand, on stability, interval)
yAvailable log space for up to 1000 records
yLogged data can be exported using a USB cable or directly on a USB flash drive
yDedicated GLP key to store and recall data on system status
For accurate measurements, use the electrode holder supplied with the bench meter.

6MW190 Dissolved Oxygen & Temperature Bench Meter
3. SPECIFICATIONS
Range
DO * 0.00 to 45.00 mg/L (ppm)
0.0 to 300.0 %
Temperature ** -20.0 to 120.0 °C (-4.0 to 248.0 °F)
Resolution
DO 0.01 mg/L (ppm)
0.1 %
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-points
0% (MI9070) and 100% (water saturated air)
Temperature compensation Automatic, from 0.0 to 50.0 °C (32.0 to 122.0 °F)
Salinity compensation 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
Log
Max. 1000 log records (stored in up to 100 lots)
On demand, 200
On stability, 200
Interval logging, 1000
PC connectivity 1 USB type A port, 1 micro USB port
Power supply 12 VDC adapter (included)
Battery life 8 hours
Environment 0 to 50 °C (32 to 122 °F); maximum RH 95%
Dimensions 230 x 160 x 95 mm (9.0 x 6.3 x 3.7”)
Weight 0.9 kg (2.0 lb.)
* DO measurement is performed within the automatic temperature compensation interval.
** Limits will be reduced to actual sensor limits.

SPECIFICATIONS 7
PROBE SPECIFICATIONS
DO probe
MA845
DO sensor Polarographic
Temperature range 0.0 to 50.0 °C (32.0 to 122.0 °F)
Temperature sensor Built-in thermistor
Cathode Platinum
Anode Silver
Membrane Oxygen permeable Teflon® membrane
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

8MW190 Dissolved Oxygen & Temperature Bench Meter
4. FUNCTIONAL & DISPLAY DESCRIPTION
Front Panel
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1. Liquid Crystal Display (LCD)
2. ESC key, to exit current mode
3. RCL key, to recall the logged values
4. SETUP key, to enter setup mode
5. LOG/CLEAR key, to log the reading or to clear calibration or logging
6. ON/OFF key
7.  directional keys for menu navigation and setting parameters
8. RANGE/key, to select setup parameters and toggle between measurement units
9. GLP/ACCEPT key, to enter GLP or to confirm selected action
10. CAL/EDIT key, to enter/edit calibration settings, edit setup settings

FUNCTIONAL & DISPLAY DESCRIPTION 9
Rear Panel
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1. Micro USB port
2. USB type A port
3. Power supply socket
4. DIN probe connector

10 MW190 Dissolved Oxygen & Temperature Bench Meter
Display Description
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1. Stability indicator
2. Status information
3. USB connection status
4. Mode tags
5. Probe symbol
6. Log tag
7. Accept tag
8. Third LCD line, message area
9. Measurement units
10. First LCD line, measurement readings
11. Arrow tags, to navigate the menu in either direction
12. Automatic temperature compensation tag
13. Temperature units
14. Second LCD line, temperature readings
15. Measurement units for salinity and altitude
16. TIME tag