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Table of Contents
Related Manuals for Milwaukee Mi 150
Summary of Contents for Milwaukee Mi 150
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Page 2: Functional Description
Instruction Manual Mi 150 & Mi 151 Bench Meters FUNCTIONAL DE S CR IPTION......................2 GENER AL DE S CR IP TION........................4 S P ECIFICATIONS ..........................5 OPE R ATIONAL GUIDE........................6 pH CALIBR ATION..........................10 pH BUFFER TEMP ER ATUR E DEP ENDENCE..................14 S ETUP ..............................14... -
Page 5: Specifications
www.milwaukeeinst.com SPECIFICATIONS R ange -2.00 to 16.00 pH ± 699.9 mV / ± 1999 mV (Mi 151 Mi 151 Mi 151 Mi 151 Mi 151 only) -20.0 to 120.0 ° C (-4.0 to 248.0 ° F) R esolution ± 0.01 pH 0.1 mV / 1 mV (Mi 151 Mi 151 Mi 151... -
Page 6: Operational Guide
Instruction Manual Mi 150 & Mi 151 Bench Meters OPERATIONAL GUIDE INITIAL INITIAL INITIAL INITIAL INITIAL PREPARATIO N PREPARATIO N PREPARATIO N PREPARATIO N PREPARATIO N Plug the 12 VDC adapter into the power supply socket. To prepare the instrument for use, connect the pH electrode to the BNC connector and the temperature probe to the appropriate socket on the rear panel of the instrument. - Page 7 www.milwaukeeinst.com In order for the instrument to measure the pH accurately, temperature must be taken into consideration. If the sample temperature is different from the temperature at which the pH electrode was kept, allow a few minutes to reach thermal equilibrium. To use the meter's Automatic Temperature Compensation feature, submerge the tempera- ture probe into the sample as close to the electrode as possible and wait for a few seconds.
- Page 8 Instruction Manual Mi 150 & Mi 151 Bench Meters N o te N o te N o te N o te N o te: When in MTC the user can press and hold the arrow keys, and the instument will start incrementing/ decrementing the temperature value.
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Page 9: R Ange Key
www.milwaukeeinst.com MEM & MR FUNCTIO NS MEM & MR FUNCTIO NS MEM & MR FUNCTIO NS MEM & MR FUNCTIO NS MEM & MR FUNCTIO NS From normal measurement mode, pressing the MEM key will freeze the readings on the display and store into internal memory the current values (pH and temperature, or mV and temperature). -
Page 10: Two -Po Int Calibratio N
Instruction Manual Mi 150 & Mi 151 Bench Meters pH CALIBRATION It is recommended to calibrate the instrument frequently, especially if high accuracy is required. The pH calibration is also necessary in the following cases: a) Whenever the pH electrode is replaced. - Page 11 www.milwaukeeinst.com if it is close to the selected buffer, the instrument will advise the user with an acoustic signal (if enabled) when the reading becomes stable, and the display will change to “R E ADY” and blinking “CFM”. • Press the CFM key to confirm the calibration: the instrument stores the first calibration point;...
- Page 12 Instruction Manual Mi 150 & Mi 151 Bench Meters • Press the CFM key: the value is stored in memory and the instrument returns to normal mode. The tags corresponding to the buffers used for calibration will light up. N otes...
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Page 13: O Ne-Po Int Calibratio N
www.milwaukeeinst.com O NE-PO INT O NE-PO INT O NE-PO INT O NE-PO INT O NE-PO INT CALIBRATIO N CALIBRATIO N CALIBRATIO N CALIBRATIO N CALIBRATIO N For optimum accuracy it is always recommended to perform a two-point calibration, but for a faster operation it is also possible to carry out a single-point calibration. Buffers at pH 7.01 or pH 6.86 (NIS T) are normally the most appropriate for this purpose, even though the instrument can be calibrated with any of the memorized pH buffers. -
Page 14: Ph Buffer Temperature Dependence
Instruction Manual Mi 150 & Mi 151 Bench Meters pH BUFFER TEMPERATURE DEPENDENCE The temperature has an effect on pH. The calibration buffer solutions are affected by temperature changes to a lesser degree than normal solutions. During calibration the instrument will automatically calibrate to the pH value corresponding to the measured or set temperature. - Page 15 www.milwaukeeinst.com The sequence of programmable parameters is as follows: 1. Acoustic signal: O n (default) or Off 2. Auto-off feature: 20 minutes (default) or disabled 3. Temperature reading unit: ° C (default) or ° F 4. Calibration segments: On (default) or Off (this enables or disables the buffer segments) 5.
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Page 16: Temperature Calibration
151 have been accurately precalibrated for temperature at the factory. For optimum accuracy, it is recommended to recalibrate the instrument for temperature at least once a year. Contact your dealer or Milwaukee Instruments Customer S ervice Center for more information. -
Page 17: Storage Procedure
www.milwaukeeinst.com M EASUREM EN T M EASUREM EN T M EASUREM EN T M EASUREM EN T M EASUREM EN T R inse the electrode tip with distilled water, immerse it (4 cm / 1½") into the sample and stir gently for a few seconds. For a faster response and to avoid cross contamination of the samples, rinse the electrode tip with the solution to be tested before taking any measurements. -
Page 18: Troubleshooting
Instruction Manual Mi 150 & Mi 151 Bench Meters TROUBLESHOOTING . t f o l l l l i f a l l a l l n i l l l u t u l n i l " " °... -
Page 19: Warranty
Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered by the warranty. Milwaukee Instruments reserves the right to make improvements design, construction and appearance of its products without advance notice. - Page 20 THAN K YOU FOR CHOOSIN G Sales and T echnical Service Contacts: Milwaukee Electronics Kft. Alsókikötő sor 11. 6726, Szeged, Hungary T el: + 36-62-428-050 Fax: + 36-62-428-051 e-mail: sales@milwaukeeinst.com Milwaukee Instruments, Inc. 2950 Business P ark Drive R ocky Mount, NC...