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Key
Power on/off
The meter will automatically shut off 10 mins after last key press
Initiate /Exit the calibration mode
In measuring mode：Short press the key to perform single-shot
measurement; long press the key to perform continuous measurement.
In calibration mode: press the key to confirm the calibration.
In calibration mode, press the key to select standard solution.
3.5 Battery Installation
1. Use the screwdriver to remove the four screws on the battery cover and open the
battery cover.
2. Insert 4 pieces of "AA" alkaline battery. Please make sure the polarity is correct.
3. Put on the battery cover and screw tightly.
4. Meter Calibration
4.1 Calibration Frequency
1) Please turn on the meter and warm-up it for 3 minutes. Please perform 4 points
calibration for first time use. For normal use, 2~4 points of calibration can be selected
for subsequent use according to requirement. Better result is obtained if it is in the
range of the above two points. When calibrating, press
standard. After calibrating, press
and enter into measurement mode.
2) To measure low turbidity ( less than 5 NTU) , please perform calibration with 0.02 and
20.0 NTU standard solution before using the meter every time, then use 1# sample vial
to perform measurement. Note please, 1# sample vial is specially used for low turbidity
measurement.
3) To measure turbidity higher than 5 NTU, it is suggested to calibrate the meter weekly or
monthly; or the user can perform verification test, which is to test the standard solution
that is close to the value of the test sample. If the error is big, it is necessary to
calibrate the meter. For turbidity higher than 5 NTU, please use 2# or 3# sample vial.
Functions
to confirm calibration. Press
- 6 -
or
to select calibration
button to quit
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