|*Working voltage:||4*1.5v(AG-13Model battery)|
|*Working condition:||0~50℃ PH<95%|
|*Calibration method:||One point correction|
|1)Take off cap and press "ON/OFF"button||2) Get reading||3) Replace the cap after cleaning the electrode|
When the # character appears on the screen, said the battery voltage is low, the battery should be replaced. When replacing the batteries, take rubber plug out of the correction hole ,pry out the card of the inverted hook on the back of the instrument by hand, push up the Hanging buckle to take off the battery bin, Pay attention to the polarity of the battery.
After the battery is replaced, then load the battery bin. When there is a voice, it shows that the hook on the hook is stuck. Last plug rubber plug of the correction hole .
When the ORP electrode is used for a long time, the surface pollution of platinum leads to the
uncertainty of measurement and the reaction slowly and the following method can be used for cleaning
(a) for inorganic pollutants, the electrode can be immersed in 0.1mol/L diluted hydrochloric acid for 30 minutes, rinsed in pure water and then used in saturated potassium chloride solution for 6 hours.
(b) detergent can be used to clean the organic oil and oil film of he platinum surface. And then clean it in pure water. It is then used in saturated potassium chloride reagent for 6 hours.
(c) the oxide film formed seriously on the surface of platinum can be polished with toothpaste on the surface of the platinum, then cleaned with pure water ,.It is immersed in saturated potassium chloride reagent for 6 hours.
The instrument electrode should be soaked in a saturated potassium chloride reagent for several hours (20 days or so) to ensure the accuracy of the measurement.