SATO 6433-00, Инструкция по эксплуатации, Страница: 11 / 16

9
Measuring procedure
(1) Press the PWR key. All digits on the LCD will be lit for two seconds and the unit enters the measurement
mode. (Dismal point on the pH value will blink for every sampling.)
(2) Remove the protection bottle of glass electrode
(3) Immerse the glass electrode 3 cm or more deep into the material to be measured.
(4) Read the measured value after the measured pH value is stable.
(5) After measurement, press the PWR key to turn the power off
(6) Wash the glass electrode with water (distilled, pure or tap water) and always put the glass electrode bottle
back on to avoid any possible damages before storing.
Cautions
●
At measurement the pH of tap water or pure water, the pH value may not be stable.
●
When measuring foods or drinks, take a measurable amount in a beaker or another container. Do not eat
or drink the measured sample.
●
The sensor section is made of glass, so take a great care in handling.
●
If it is damaged, be careful not to get injured by broken glass.
●
If the liquid inside comes in contact with your skin, rinse immediately with water.
●
The glass electrode is a consumable. It needs to be replaced with a new one if the electrode is broken or the
performance is degraded. (The glass electrode is not repairable.)
●
Hold function
Use the HOLD function when the temperature of the sample being measured fluctuates a lot.
(1) Press the HOLD /
▲
key in the measurement mode.
The HOLD indicator lights up to indicate that the measured values are held.
Note that calibration does not perform under the Hold function is active.
(2) To cancel, press the HOLD / ▲ key again.
The HOLD indicator goes out and the unit returns to the measurement mode.
About the glass electrode
(1) Storing
If the instrument is unused for a long time, the glass electrode becomes too dry to measure the pH values
accurately.
The pH electrode works best and shows accurate readings when used with moderate moisture. When using
the instrument for the first time after purchasing or a long storage period, we recommend placing the glass
electrode in water (distilled, pure or tap water) or the pH standard solution (pH4) for at least 12 hours and
performing calibration before measuring.
(2)
Check and calibration
For an accurate pH measurement, perform calibration using the pH standard solutions.
If there is a deviation from the expected value, adjust it before performing a pH measurement.
Note : It is advisable to use a new pH standard solution, where applicable.