Lutron Electronics PH-222, Руководство пользователя

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3) Press the button 3 times. The display will show:
4) Press the “HOLD” Button (3 -3, Front Panel Description) once. The “Clr will begin flashing
and then show “END”. It will then return to normal measurement mode and this
confirms that the “CALBIRATION CLEAR” procedure has been completed
as per the
below:
5. Measurement Procedure
5-1 pH Measurement
After the calibration procedure has been completed the meter is ready for use.
1) Power on the meter (if not already on) by pressing the “POWER” button (3 -2, Front Panel
Description).
2) Place the electrode into the solution you wish to measure. Leave the electrode in the
solution until the reading stabilises. The LCD will show you your pH Value (Upper section of
main screen) and the temperature value (Lower section of the display).
3) After you have completed your measurement, rinse the electrode in distilled water and
place it into the protection cap (3-7, Front Panel Description).
5-2 Data Hold
This meter has the ability to hold a particular measurement. To do this, during your
measurement, simply press the “HOLD” Button. This will show a “HOLD” Symbol on the screen
and will hold the current reading. To release the hold measurement, simply press the “HOLD”
button once again.
5-3 Data Record (Max, Min. Reading)
The Data record function allows you to record your minimum and maximum readings whilst the
unit is on. To perform this follow the procedure below:
1) Press the “REC” button (3 -4, Front Panel Description) to start the data recording function.
The meter will show “REC” on the display.
2) When the “REC” symbol is on the display press the “REC” Button and the “REC MAX” sy mbol
along with the maximum value will be displayed.
3) Press the “REC Button” again and the “REC MIN” symbol will be displayed along with the
minimum value.