Milwaukee MW190 MAX Instruction Manual
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Milwaukee MW190 MAX Instruction Manual

Dissolved oxygen & temperature bench meter
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INSTRUCTION MANUAL
MW190 MAX
Dissolved Oxygen & Temperature
Bench Meter
SATISFACTION
GUARANTEED

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Summary of Contents for Milwaukee MW190 MAX

  • Page 1 INSTRUCTION MANUAL MW190 MAX Dissolved Oxygen & Temperature Bench Meter SATISFACTION GUARANTEED...
  • Page 2 This instruction manual will provide you the necessary information for correct use of the 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.

  • Page 3: Table Of Contents

    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.

  • Page 4: Preliminary Examination

    4 MW190 Dissolved Oxygen & Temperature Bench Meter 1. PRELIMINARY EXAMINATION Each bench meter is delivered in a cardboard box and is supplied with: y MA845 Dissolved Oxygen and Temperature polarographic probe y MA841 Membrane cap and o-ring (2 pcs.) y MA9071 Electrolyte solution y MA9315 Electrode holder y Probe protective cap...

  • Page 5: Instrument Overview 5

    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.

  • Page 6: Specifications

    6 MW190 Dissolved Oxygen & Temperature Bench Meter 3. SPECIFICATIONS 0.00 to 45.00 mg/L (ppm) DO * 0.0 to 300.0 % Range Temperature ** -20.0 to 120.0 °C (-4.0 to 248.0 °F) 0.01 mg/L (ppm) 0.1 % Resolution Temperature 0.1 °C (0.1 °F) ±1.5 % of reading ±1 digit Accuracy Temperature...
  • Page 7 SPECIFICATIONS 7 PROBE SPECIFICATIONS 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 DO probe Membrane Oxygen permeable Teflon® membrane MA845 Connector socket DIN, 7 pins Body PP, ABS, IP67 rating Total length: 160 mm (6.3”) Dimensions Ø...

  • Page 8: Functional & Display Description

    8 MW190 Dissolved Oxygen & Temperature Bench Meter 4. FUNCTIONAL & DISPLAY DESCRIPTION Front Panel 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.
  • Page 9 FUNCTIONAL & DISPLAY DESCRIPTION 9 Rear Panel 1. Micro USB port 2. USB type A port 3. Power supply socket 4. DIN probe connector...
  • Page 10 10 MW190 Dissolved Oxygen & Temperature Bench Meter Display Description 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.

  • Page 11: Ma845 Probe Description 11

    MA845 PROBE DESCRIPTION 11 5. MA845 PROBE DESCRIPTION The MA845 probe uses a polarographic dissolved oxygen sensor with a built-in thermistor that allows stable, temperature compensated readings. The sensor makes use of a platinum cathode, a silver wire anode and electrolyte solution protected by an oxygen permeable membrane.

  • Page 12: General Operations

    Use  keys to check the battery percentage. 6.2. PROBE PREPARATION DO probes shipped from Milwaukee Instruments are dry. Before measurements membrane cap needs to be primed and the probe polarized. Changing the membrane cap 1.
  • Page 13 GENERAL OPERATIONS 13 y Continue with probe conditioning (polarizing) function. Position the O-ring Fill Screw back on Probe Polarization A new probe must be polarized before calibration. y Connect the probe and power on the meter y “DISSOLVED OXYGEN PROBE CONDITIONING” is displayed for about 60 seconds while the DO probe is conditioned.

  • Page 14: Probe Maintenance

    14 MW190 Dissolved Oxygen & Temperature Bench Meter 6.3. PROBE MAINTENANCE The platinum cathode should always be bright and untarnished. If it is tarnished or stained, the cathode should be cleaned gently with a lint-free cloth. y Rinse the probe with deionized or distilled water. y Replace the membrane cap using fresh electrolyte.

  • Page 15: Setup 15

    SETUP 15 7. SETUP To configure the meter settings, modify default values or set measurement parameters: y Press SETUP to enter (or exit) Setup mode y Use  keys to navigate the menus (view parameters) y Press CAL/EDIT to enter Edit mode (modify parameters) y Press RANGE/...
  • Page 16 16 MW190 Dissolved Oxygen & Temperature Bench Meter Calibration Expired Warning Options: 1 to 7 days (default) or off 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 ...
  • Page 17 SETUP 17 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/...
  • Page 18 18 MW190 Dissolved Oxygen & Temperature Bench Meter Auto Off Options: 5, 10 (default), 30, 60 minutes or off Use  keys to select the time. The meter will power off after set period of time. Sound Options: enable (default) or disable Use ...
  • Page 19 SETUP 19 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.
  • Page 20 20 MW190 Dissolved Oxygen & Temperature Bench Meter 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.

  • Page 21: Altitude & Salinity Compensation 21

    ALTITUDE & SALINITY COMPENSATION 21 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.

  • Page 22: Calibration

    22 MW190 Dissolved Oxygen & Temperature Bench Meter 9. CALIBRATION Ensure the probe is ready for measurements. Follow the procedure in PROBE PREPARATION section. y Set the appropriate altitude and salinity compensation value (see SETUP OPTIONS section). y For highest accuracy, complete all calibrations at a temperature as close as possible to the sample temperature.
  • Page 23 CALIBRATION 23 Note: If DO is a critical parameter or sample has low DO value, it is recommended to perform a second calibration point or a check using a zero calibration DO solution. Zero Calibration Continue after confirming the 100% calibration point. If no previous 100% calibration has been performed, press CAL/EDIT.
  • Page 24 24 MW190 Dissolved Oxygen & Temperature Bench Meter Clear Calibration 1. Press CAL/EDIT to enter Calibration mode. 2. Press LOG/CLEAR. LCD displays “CLEAR CALIBRATION“ with ACCEPT tag (blinking). 3. Press GLP/ACCEPT to confirm. LCD displays “PLEASE WAIT“ followed by “NO CAL”. Calibration Messages &...

  • Page 25: Measurement 25

    MEASUREMENT 25 10. MEASUREMENT When connected, MA845 probe is automatically recognized. y Make sure that the probe is polarized, calibrated and the protective cap has been removed. y Rinse the probe. y Submerse the probe in the sample to be tested, make sure the temperature sensor is also immersed.
  • Page 26 26 MW190 Dissolved Oxygen & Temperature Bench Meter Measurement Messages & Warnings y “OUT OF SPEC” is displayed if the measurement exceeds the specified DO probe limits. The DO range upper limit is displayed blinking. y “OUT OF SPEC” is displayed if the temperature is outside temperature compensation interval.

  • Page 27: Logging 27

    LOGGING 27 11. LOGGING MW190 supports three types of logging: manual log on demand, log on stability and interval logging. See Log Type in SETUP OPTIONS section. The meter can hold up to 1000 log records. Up to 200 for manual log on demand, up to 200 for log on stability and up to 1000 for interval logging.
  • Page 28 28 MW190 Dissolved Oxygen & Temperature Bench Meter Manual Log on Demand 1. From the Setup mode, set Log Type to MANUAL. 2. From the measurement screen press LOG/CLEAR. LCD displays “PLEASE WAIT”. The LOG ### “SAVED” screen displays stored log number. “FREE”...

  • Page 29: Data Management

    LOGGING 29 Interval Logging Warnings “OUT OF SPEC” Measurement is out of spec. Log continues. “MAX LOTS” Maximum number of lots reached (100). Cannot create new lots. “LOG FULL” Log space is full (1000 logs limit was reached). Logging stops. 11.2.
  • Page 30 30 MW190 Dissolved Oxygen & Temperature Bench Meter 2. Press GLP/ACCEPT to confirm. 3. Use  keys to select the lot type (MANUAL, STABILITY or interval ###). Note: Press RANGE/ to export only the selected lot to external storage. 4. Press GLP/ACCEPT to confirm. 5.
  • Page 31 LOGGING 31 4. With a lot selected, press LOG/CLEAR to delete entire lot. “CLEAR” is displayed with ACCEPT tag and lot name blinking. 5. Press GLP/ACCEPT to confirm (to exit, press ESC or CAL/EDIT or LOG/CLEAR). “PLEASE WAIT” with ACCEPT tag blinking is displayed, until the lot is deleted. After the selected lot has been deleted, “CLEAR DONE”...
  • Page 32 32 MW190 Dissolved Oxygen & Temperature Bench Meter Log on Interval 1. Press RCL to access the logged data. LCD displays “PLEASE WAIT” followed by “LOG RECALL” with ACCEPT tag blinking and the total number of logs. 2. Press GLP/ACCEPT to confirm. 3.
  • Page 33 LOGGING 33 11.2.3. Exporting Data PC Export 1. With the meter on, use the supplied micro USB cable to connect to a PC. 2. Press SETUP then CAL/EDIT. 3. Use the  keys and select “EXPORT TO PC”. The meter is detected as a removable drive. LCD displays the PC icon. 4.
  • Page 34 34 MW190 Dissolved Oxygen & Temperature Bench Meter USB Export All 1. With the meter on, insert a USB flash drive into the micro USB port located on top of the meter. If the flash drive does not have a micro USB connector, use an adapter. 2.
  • Page 35 LOGGING 35 4. With the lot selected, press RANGE/ to export to USB flash drive. LCD displays “PLEASE WAIT” followed by “EXPORTING” with ACCEPT tag and selected lot name (MAN / STAB / ###) blinking. LCD displays “EXPORTING” and the percentage counter, followed by “DONE” when export is completed.

  • Page 36: Glp

    36 MW190 Dissolved Oxygen & Temperature Bench Meter 12. GLP Good Laboratory Practice (GLP) allows the user to store and recall calibration data. Correlating readings with specific calibrations ensures uniformity and consistency. Calibration data is stored automatically after a successful calibration. GLP information is included with every data log.

  • Page 37: Troubleshooting

    LCD tags displayed Check the keyboard. If error persists, ON/OFF key is blocked continuously at startup contact Milwaukee Technical Service. Restart the meter. If error persists, contact “Internal Er X” Internal hardware error Milwaukee Technical Service. 14. ACCESSORIES...

  • Page 38: Certification

    If service is required, contact your local Milwaukee Instruments Technical Service. If the repair is not covered by the warranty, you will be notified of the charges incurred. When shipping any meter, make sure it is properly packaged for complete protection.
  • Page 39 Milwaukee Instruments reserves the right to make improvements in design, construction and appearance of its products without advance notice.
  • Page 40 THANK YOU FOR CHOOSING Sales and Technical Service Contacts: Milwaukee Electronics Kft. Alsó-kikötő sor 11C H-6726 Szeged - HUNGARY tel: +36 62 428 050 fax: +36 62 428 051 www.milwaukeeinst.com e-mail: sales@milwaukeeinst.com Milwaukee Instruments, Inc. 2950 Business Park Drive Rocky Mount, NC 27804 USA...

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