Milwaukee MW150 Instruction Manual
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Milwaukee MW150 Instruction Manual

Ph / orp / temperature bench meters
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INSTRUCTION MANUAL
MW150 & MW151 MAX
pH / ORP / Temperature
Bench Meters
CAL
4.01
7.01
10.01
pH
ATC
ºC
SATISFACTION
GUARANTEED

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  • Page 1 INSTRUCTION MANUAL MW150 & MW151 MAX pH / ORP / Temperature Bench Meters 4.01 ºC 7.01 10.01 SATISFACTION GUARANTEED...
  • Page 2 This instruction manual will provide you the necessary information for correct use of the 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.

  • Page 3: Table Of Contents

    9.2. ORP CALIBRATION ............................30 9.3. ORP MEASUREMENT ............................30 10. LOGGING (MW151) ..............................31 10.1. TYPES OF LOGGING ............................31 10.2. DATA MANAGEMENT .............................33 11. MEM & MR FUNCTIONS (MW150) ........................38 12. GLP ....................................39 13. TROUBLESHOOTING ..............................41 14. ACCESSORIES................................42 CERTIFICATION ..................................43 RECOMMENDATION ................................43...

  • Page 4: Preliminary Examination

    4 MW150 & MW151 Bench Meters 1. PRELIMINARY EXAMINATION Each bench meter is delivered in a cardboard box and is supplied with: y MA917B/1 pH electrode y MA831R Temperature probe y MA9315 Electrode holder y M10004 pH 4.01 buffer solution (sachet) y M10007 pH 7.01 buffer solution (sachet)

  • Page 5: Instrument Overview 5

    INSTRUMENT OVERVIEW 5 2. INSTRUMENT OVERVIEW MW150 and MW151 pH / ORP / Temperature bench meters perform accurate measurements and present a series of new diagnostic features for improved reliability. y Up to 3-point (up to 5-point, MW151) automatic pH calibration, 7 standard calibration buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) and two custom buffers (MW151)

  • Page 6: Specifications

    6 MW150 & MW151 Bench Meters 3. SPECIFICATIONS MW150 MW151 –2.00 to 20.00 pH –2.00 to 20.00 pH –2.000 to 20.000 pH Range * ±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) 0.01 pH...
  • Page 7 SPECIFICATIONS 7 pH range 0 to 14 pH Temperature range 0 to 70°C (32 to 158 °F) Shaft material glass Reference electrolyte KCl 3.5M Reference junction ceramic, single pH electrode Reference type double, Ag/AgCl MA917B/1 Maximum pressure 0.1 bar Connector type Cable length Shaft length 120 mm...

  • Page 8: Functional & Display Description

    8 MW150 & MW151 Bench Meters 4. FUNCTIONAL & DISPLAY DESCRIPTION Front Panel MW150 1. Liquid Crystal Display (LCD) 2. ESC key, to leave current mode 3. MR key, to recall the stored value from memory 4. SETUP key, to enter setup mode 4.01...
  • Page 9 FUNCTIONAL & DISPLAY DESCRIPTION 9 Front Panel MW151 1. Liquid Crystal Display (LCD) 2. ESC key, to leave 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 4.01 ºC 7.01...
  • Page 10 10 MW150 & MW151 Bench Meters Display Description MW150 pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 4.01 NO MTC ATC 6.86 ºC 7.01 9.18 ºF 10.01 12.45 ACCEPT TIME 1. Status information 2. Clear message/calibration/memory 3. OPEN is displayed when the electrode cap has to be removed.
  • Page 11 FUNCTIONAL & DISPLAY DESCRIPTION 11 Display Description MW151 pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 NO MTC ATC 4.01 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2 ACCEPT TIME 1. Status information 2. Clear message/calibration/memory 3. USB connections status 4.

  • Page 12: General Operations

    Setup, Auto Off section. 5.3. OPERATION OVERVIEW MW150 offers simplified pH measurements that are ideal for anyone who requires rapid and reliable results but works on a tight budget. It displays 0.01 pH resolution and allows a 3-point buffer calibration from the following pH buffers: pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45.
  • Page 13 It also indicates if the buffer solution is contaminated. The logging feature supports logging up to 1000 records, organized as: manual log-on demand (max. 200 logs), manual log-on stability (max. 200 logs), interval logging (max. 1000 logs, 100 lots). MW150 MW151 Calibration up to 3 points up to 5 points, including 2 custom...

  • Page 14: Setup

    14 MW150 & MW151 Bench Meters 6. SETUP Setup mode allows parameters that are not directly related to the measurement to be viewed and modified. 1. Press SETUP to enter in Setup mode. 2. Use  keys to select required parameter.
  • Page 15 SETUP 15 Out of Calibration Range Use  keys to enable (on – default) or disable (off) out of calibration range warning. pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 NO MTC ATC 4.01 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2...
  • Page 16 16 MW150 & MW151 Bench Meters Auto Off Use  keys to select desired auto-off time. Available options are 5, 10 (default), 30, 60 minutes and off. pHmV pHmV AUTO AUTO DATE DATE HOLD HOLD SLOPE SLOPE CLEAR CLEAR OPEN OPEN 1.68...
  • Page 17 SETUP 17 LCD Contrast Use  keys to set LCD contrast values from 1 to 9 with default value being 9. pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 NO MTC ATC 4.01 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2 ACCEPT...

  • Page 18: Mw151 Specific Setup

    18 MW150 & MW151 Bench Meters 6.2. MW151 SPECIFIC SETUP In addition to General Setup parameters, when operating MW151, the user can set the following specific parameters: Log on Meter Is displayed when a USB cable or USB flash drive is connected. Enter SETUP, select LOG ON METER, press CAL/EDIT, than use ...
  • Page 19 SETUP 19 pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 NO MTC ATC 4.01 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2 ACCEPT TIME Second Custom Buffer Use  keys to set the second custom buffer. Use RANGE/ to set a default buffer value as starting value.

  • Page 20: Ph Preparation

    20 MW150 & MW151 Bench Meters 7. pH 7.1. pH PREPARATION MW150: Up to 3-point calibration with a choice of seven standard buffers. MW151: Up to 5-point calibration with a choice of 7 standard buffers and, additionally, calibration with custom buffers (CUST1 and CUST2).
  • Page 21 Calibration 1. Submerse pH electrode tip app. 4 cm (1½”) into buffer solution and stir gently. Press CAL/EDIT. If performing a 2-point calibration, use the pH 7.01 (pH 6.86 for NIST) buffer first. The meter will enter calibration mode, displaying 7.01 pH buffer value and “WAIT” message blinking, together with the “CAL”...

  • Page 22: Ph Measurement

    22 MW150 & MW151 Bench Meters Expired Calibration The instrument has a real time clock (RTC) to monitor how much time has passed since the last pH calibration. The RTC is reset every time the instrument is calibrated and the “expired calibration”...
  • Page 23 MTC mode To enable Manual Temperature Compensation (MTC), disconnect the temperature probe from the meter. The display will show a default temperature of 25°C or the last measured temperature value. The MTC tag and the three arrows symbol next to temperature measurement will be displayed.

  • Page 24: Warnings & Messages

    24 MW150 & MW151 Bench Meters 7.4. WARNINGS & MESSAGES The Calibration Check feature flags diagnostic messages during a calibration. As electrode aging is usually a slow process, differences between previous calibrations are likely due to a temporary problem with the probe or buffers.
  • Page 25 Repeat calibration after cleaning. pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 4.01 NO MTC 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2 ACCEPT TIME Check Probe / Check Buffer “CHECK PROBE CHECK BUFFER” is displayed when the electrode's slope exceeds the highest accepted slope limit.
  • Page 26 26 MW150 & MW151 Bench Meters pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 4.01 NO MTC 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2 ACCEPT TIME Contaminated Buffer If “CONTAMINATED BUFFER” is displayed, the buffer is contaminated. Replace your buffer with a new one and continue the calibration.

  • Page 27: Electrode Condition & Maintenance 27

    The slope (%) indicates the sensitivity of the glass membrane, the offset value (mV) indicates the age of electrode and provides an estimation when the electrode needs to be changed. Milwaukee Instruments recommends that the offset does not exceed ±30 mV and that the slope percentage is between 85-105%.
  • Page 28 28 MW150 & MW151 Bench Meters Preparation Procedure Remove the electrode protective cap. Do not be alarmed if salt deposits are present, this is normal. Rinse the electrode with water. Shake the electrode gently, as you would do with a clinical thermometer, to eliminate any air bubbles inside the glass bulb.
  • Page 29 ELECTRODE CONDITION & MAINTENANCE 29 Storage Procedure 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 (not included with the bench meter) to the protective cap.

  • Page 30: Orp

    30 MW150 & MW151 Bench Meters 9. ORP 9.1. PREPARATION To perform ORP measurements, connect an ORP electrode (see “Accessories” section for code) to the instrument and turn it ON. 9.2. ORP CALIBRATION The ORP range is factory calibrated and cannot be calibrated by the user. MA9020 ORP Solution can be used to confirm that the ORP sensor measures correctly.

  • Page 31: Logging (Mw151) 31

    LOGGING (MW151) 31 10. LOGGING (MW151) MW151 features three different types of logging: manual log on demand, log on stability and interval logging. The logging type is set in the Setup menu (see Log Type for details). The meter can hold up to 1000 records. It can hold up to 200 manual log on demand records, up to 200 log on stability records and up to 1000 interval logging records.
  • Page 32 32 MW150 & MW151 Bench Meters Log on Stability When Stability log is selected, data points are added to the log file every time LOG/ CLEAR is pressed. When LOG/CLEAR is pressed, “PLEASE WAIT” is displayed followed by “WAITING”. Once the measurement is stable, the number of saved logs is displayed followed by available log space.

  • Page 33: Data Management

    LOGGING (MW151) 33 When RANGE/ is pressed, the number of available logs is displayed. pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 4.01 NO MTC 6.86 ºC 7.01 9.18 ºF 10.01 12.45 CUST1 CUST2 ACCEPT TIME When LOG/CLEAR is pressed again, “LOG STOPPED“ is displayed indicating the end of interval logging session.
  • Page 34 34 MW150 & MW151 Bench Meters Deleting Data Manual Log on Demand & Stability Log Press RCL then GLP/ACCEPT to select between log types (manual log on demand or stability). pHmV pHmV AUTO AUTO DATE DATE HOLD HOLD SLOPE SLOPE...
  • Page 35 LOGGING (MW151) 35 Log on Interval Press RCL then GLP/ACCEPT and use the  keys to scroll between interval lots. Press LOG/CLEAR to delete lot. “CLEAR DONE” is displayed for a few seconds after selected lot has been deleted. pHmV pHmV AUTO AUTO DATE...
  • Page 36 36 MW150 & MW151 Bench Meters Export Data 1. Connect the MW151 to the PC using the supplied USB cable. 2. Turn the meter on with the ON/OFF button. 3. The PC will detect the bench meter as a removable flash drive.
  • Page 37 LOGGING (MW151) 37 Logged data can be transferred to a USB flash drive. 1. Insert a USB flash drive into the USB port located on the top of the meter. 2. Press RCL. 3. Use the RANGE/ to select the “EXPORT ALL” option then press GLP/ACCEPT to confirm.

  • Page 38: Mem & Mr Functions (Mw150)

    38 MW150 & MW151 Bench Meters 11. MEM & MR FUNCTIONS (MW150) When in measurement mode, press MEM/CLEAR. The LCD will display “MEMORY” and will save the measured pH value (as well as ORP mV and temperature values) and the current calibration.

  • Page 39: Glp 39

    GLP 39 12. GLP Good Laboratory Practice (GLP) refers to a quality control function used to ensure uniformity of sensor calibrations and measurements. Press GLP/ACCEPT to open latest calibration file. Use the  keys to scroll stored information (offset and slope values, used buffers together with the temperature, time and date of the last calibration, calibration warnings).
  • Page 40 40 MW150 & MW151 Bench Meters If enabled, the number of days until the calibration alarm “CAL DUE” will be displayed (e.g. “EXP IN 7DAYS”). If disabled, “EXP WARN DIS” is displayed. pHmV AUTO DATE HOLD SLOPE CLEAR OPEN 1.68 4.01...

  • Page 41: Troubleshooting 41

    Wrong or contaminated buffer Check that buffer solution is during pH calibration correct and fresh “Internal Er X” Internal error Restart the meter. If error persists, contact Milwaukee Technical Service. "CAL ERROR" Loaded default Perform pH calibration pH calibration values...

  • Page 42: Accessories

    42 MW150 & MW151 Bench Meters 14. ACCESSORIES MA9001 pH 1.68 Buffer Solution (230 mL) MA9004 pH 4.01 Buffer Solution (230 mL) MA9006 pH 6.86 Buffer Solution (230 mL) MA9007 pH 7.01 Buffer Solution (230 mL) MA9009 pH 9.18 Buffer Solution (230 mL) MA9010 pH 10.01 Buffer Solution (230 mL)

  • Page 43: 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 44 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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Mw151 max

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