Instruction Manuals - Cole-Parmer

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<strong>Instruction</strong> Manual pH 1100/ 21003.2 pH measurementThis meter is capable of taking measurements with automatic ormanual temperature compensation. Automatic TemperatureCompensation (ATC) occurs when a temperature sensor isplugged into the meter. If there is no temperature sensorplugged into the meter, the default setting is automatically 25°C(if the meter has never been manually set for temperature) or thelast manually set value. You can manually set the temperature to7.179pH 25.3°C ATCJan 18 2002 08:46:25Figure 29match your working conditions using a separate thermometer. pH/ Temp mV I onSel ec t & Pr es s ENTER3.2.1 Automatic temperature compensationFor automatic temperature compensation, simply plug thetemperature probe into the meter (see page 8). The ATCindicator will light on the LCD. See Figure 29.NOTE: If you are using a temperature probe, the probe must besubmersed in the liquid you are measuring.3.2.2 Adjusting manual temperature compensationIMPORTANT: For manual compensation, you must disconnectthe temperature probe.1. Turn the meter ON. If the meter is NOT in the pHmeasurement mode, press EXIT and use >/CAL to selectpH/Temp. The mode selected will flash. See Figure 30.Press ENTER to confirm selection. The meter is now in pHmeasurement mode. If the temperature probe isdisconnected, the upper display will indicate MTC. SeeFigure 31.2. Press >/CAL to enter pH/Temp calibration mode. Thedisplay will flash Cal Mode Activated, Please wait... Press>/CAL key again to enter the temperature calibration mode.The display will flash Temperature Cal Mode. See figure 32.The upper display then reads MTC Temp: 25.0°C and thelower display reads Key In Std: 25.0°C. See Figure 33.3. Check the temperature of your sample using an accuratethermometer.4. Key in the temperature value using the numeric keypad. Ifyou make a mistake, use the Δ/MI or∇/MR key to highlightmistake, then re-enter.5. Press ENTER to confirm temperature and to return to thepH measurement mode. Display will flash Temp CalComplete in the upper display and MTC Set Temp:(temperature that was keyed in). See Figure 34. The displaywill flash Sys. Updating...Please wait... The meter thenreturns to pH measurement mode and will now compensatepH reading with the manually set temperature.NOTE: To exit this program without confirming the manualtemperature compensation value, do not press ENTER in step 5.Press EXIT instead. The display will flash Error: Cal Aborted andmeter will return to pH measurement mode.Figure 307.179pH 25.3°C MTCJan 18 2002 08:46:25Figure 31Temperat ur e Cal ModeFigure 32MTC Temp : 25.0 ° CKey I n St d: 25.0 ° CTe mp Ca l Co mp l et eMT C Se t Te mp : 2 6 .5Figure 33° CFigure 3416
<strong>Instruction</strong> Manual pH 1100/ 21003.2.3 Taking pH MeasurementsNOTE: Be sure to remove the electrode soaker bottle orprotective rubber cap on the electrode before measurement.1. Rinse the probe with deionized or distilled water before useto remove any impurities adhering to the probe body. If thepH electrode dehydrated, soak it for 30 minutes in electrodestorage solution or a 2M to 4M KCl solution.2. Press ON. The upper display shows current pH reading andtemperature, and indicates automatic or manualtemperature compensation. The lower display shows month,date, year and time. See Figure 35.7.179pH 25.3°C ATCJan 18 2002 08:46:25Figure 357.546pH 25.4°C ATCJan 18 2002 08:46:30Figure 363. Dip the probe into the sample. Make sure the sensor or theglass bulb of the electrode is completely immersed into thesample. Stir the probe gently to create a homogenoussample.4. Allow time for the reading to stabilize. The pH indicatorblinks when reading is not stable. See Figure 36. When thereadings stabilizes, the pH indicator freezes and no longerblinks.17
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Instruction Manuals - Cole-Parmer

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