PH Meter 4 In 1 High Water Quality Meter Pen Type TDS/EC/PH/Temperature Tester with ATC Temperature Compensation

Steps:

1. Remove the protective cover. Touch the power button to switch on.

2. Insert the instrument into the measured solution, so that the measuring electrode is immersed in the measured solution.

3. Gently shake the instrument and read the measured value after the displayed value is stable.

4. Tap the "TEMP" key to switch between Celsius and Fahrenheit. Tap the "MODE" key to select the PH and EC (TDS) functions of the measuring instrument.

5. In the EC (TDS) mode, long press the "MODE" button (about 5 seconds) to switch the display of the instrument\'s EC (TDS) 4 levels, followed by "ms", "us", "ppt" and "ppm" .

6. After use, turn off the power, clean the electrode with clean water, and put on a protective cover.

PH calibration:

1. Turn on the phone, lightly press the "MODE" button, and select the meter "PH" function.

2. Insert the electrode into the standard buffer solution of PH6.86 and shake it gently until the displayed value is stable.

3. Long press the "CAL" key (about 5 seconds), the instrument enters the automatic calibration state (the instrument can automatically identify the PH4.00 and PH6.86 standard buffer solutions), if the standard buffer solution is correct, the instrument will calibrate and display "686 ", enter the measurement state after 3 seconds, until the displayed value is consistent with the pH value of the standard buffer solution at that temperature. If the standard buffer solution is incorrect, the meter will display "Err" for 3 seconds and no calibration will be performed. The PH6.86 point correction is completed.

4. Clean the electrode, and absorb the water attached to and around the electrode with filter paper, insert the electrode into a standard buffer solution of pH 4.01, and shake it gently until the displayed value is stable.

5. Long press the "CAL" key (about 5 seconds), the instrument enters the automatic calibration state, if the standard buffer solution is correct, the instrument will calibrate and display "400", after 3 seconds, it will enter the measurement state until the displayed value is the standard buffer The pH of the solution at this temperature is consistent. The PH4.01 point calibration is completed. If the standard buffer solution is incorrect, the meter will display "Err" for 3 seconds and no calibration will be performed. The PH4.01 point calibration is completed.

6. Clean the electrode, and use filter paper to absorb the water attached to and around the electrode. Insert the electrode into the standard buffer solution of pH 9.18 and shake it gently. When the displayed value is stable, the displayed value will match the standard buffer solution. The comparison is within the allowable range of error.

7. The PH calibration of the instrument is completed.