7
LOW-BATTERY
Battery symbol will appear on display at right top corner when the power is low. Failure to
replace batteries will have an effect on the accuracy of the readings.
1. Open the battery cover on the rear side.
2. Remove the expired batteries.
3. Insert new 2 pcs AAA batteries and make sure the batteries are in correct polarity.
Then, put on the cover.
CALIBRATION
1. Turn the meter off and plug the sensor into 33% salt bottle. Press “ON/OFF + C/F”
keys more than one sec. to enter calibration mode.
2. “32.8%” will flash on LCD and DP, WB is displayed as “---.-“ that means the values are
invalid in the calibration process. After 30 min, the flashing will stop to indicate the
procedure is finished.
3. Move the sensor to 75% salt bottle and press
more than one sec. to enter
75.3% calibration. “75.3%” will flash on LCD.
4. Flashing stops after 30 mins, up to now the whole calibration is completed and the
calibration data has been saved in memory.
Note:
a. You can exit calibration procedure without saving by pressing “ON/OFF” key before
step4. At step 4, pressing “ON/OFF” key to exit calibration.
b. Auto power off is disabled in calibration mode.
c. To get high accuracy, calibration should be operated at 23 degree C.
d. If the reading is out of 75.3% ±0.5 % at step 4, it means the calibration is failed.
