Two- And Three-Point Calibration - Hach sensION+ MM150 Manual

6. Operation

6.4.3. Two- and three-point calibration

Follow the diagram below.
The equipment will repeat the
process described for the first
standard solution with the second
and third.
Dip the sensor into the tube several times to homogenize the
liquid. Do not hold it by the tube to avoid heating of the stan-
dard solution.
Note: if the measuring instrument is not used for 5 minutes, it
shuts off automatically.
If errors occur during calibration, an error message will appear
on screen (see pg. 23).
When you switch standards, rinse the sensor with deionized
water.
(1) Press
Important: before beginning calibration, rinse the
sensor with plenty of deionized water, followed by
the first conductivity standard.
sensION+ MM150 HACH 0710.indd ANG:15 sensION+ MM150 HACH 0710.indd ANG:15
or to go to the required option.
(1)
To exit calibra-
tion.
One-point cali-
bration
To exit calibration
Two-point calibration
Screw the
sensor
to the 1st tube
Screw the
sensor to the
2nd tube
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