8
Turbidity Calibration
•
The PCE-TUM 50 turbidity meter is calibrated with Formazin Standards at the factory and does not require user calibration prior to use.
•
During the calibration process, do not shake or agitate the calibration standard violently to prevent air bubbles.
•
In order to get accurate measuring results, we recommend calibrating the meter at least once a month.
•
The meter allows turbidity calibration up to 7 points with minimum of 2 points, the default calibration points include the 0.02, 10.00, 200, 500,
1000, 1500 and 2000 NTU. You are able to select the calibration point during the calibration.
Calibrate the meter
1.
Press the
Cal
key to enter the calibration mode, the meter prompts to
select
the “Number of Calibration Points”.
2.
Press the
◄
or
►
key to select an applicable option (2 to 7 points),
press the
Enter
key, the display shows 0.02 NTU.
3.
If necessary, press the
◄
or
►
key to select desired calibration point
(e.g., 10.00 NTU).
4.
Insert the corresponding standard into the sample chamber, ensure
that the
mark on the vial cap always aligns with the arrow on the meter.
Close the light
shield lid.
5.
Press the
Enter
key, the meter begins the calibration. The
Calibrating..icon shows in the upper right corner of screen.
6.
Wait for the measured value to stabilize, the display automatically show
the
next calibration point (e,g., 200 NTU).
7.
Repeat steps 3 to 5 above until the display shows “Calibration is
Completed”.
The meter returns to the measurement mode. Calibration
is completed.
During the calibration process, press the
ESC
key, the meter will exit the calibration and return to the measurement mode.
