Data Hold
Freeze the display reading
pH Calibration
pH 7.00, pH 4.01 or pH 10.01, 3
points calibration
Operating Humidity
Less than 80% RH
Dimension
188 x 38 mm (electrode included).
Weight
136 g (electrode included).
OPERATING INSTRUCTION
Do not screw the probe cap at the bottom of the pH meter, pull it out
directly!
* Hold Feature
A flashing dot will be displayed during the measuring mode, Press HOLD to freeze the current
reading. Press HOLD again to release the hold mode.
* Automatic Temperature Compensation (ATC)
The product is capable of
measuring the temperature and making compensation automatically, ‘ATC’ shows at the left corner
of the screen.
* Calibration
1. Prepare 4.01 and 7.00 or 10.01 pH buffers, Use 7.00pH buffer for the mid-range buffer first. The
pH values for the buffers are given for 25 °C. If the sample temperature is not 25 °C, the pH values
displayed for the buffers will reflect the correct pH value for the sample temperature. If the
electrode is dry, submerge it in distilled water for 10 minutes before calibration. Ensure that the
calibrating buffers are fresh.
2. Press ON/OFF key to turn the meter on, submerge the probe in the buffer while stir gently. Then
keep it still until a stable reading is reached. Press CAL for 3 seconds until the Text ‘CAL’ appears.
Then release CAL, the meter will identify the current buffer value automatically, and display 6.86 in
the LCD. The result will be saved while the text ‘SA’ displayed after 2 seconds. The meter will back to
measuring mode after 1 second while text ‘End’ showed.
3. If text ‘End’ is showed after press CAL, it means the calibration buffer is not fresh or the probe is
aging.
4. Do not take out the probe from the buffer until text ‘End’ is showed in the LCD.
5. Same steps as calibrating pH 4.01 and 10.01.
* If Out of the Range
If the pH value is lower than 0 or higher than 14, ‘-- -- --’ will be displayed.
When the temperature is too low or too high, ‘L’ or ‘H’ will be displayed.
