13
Displayed temperature =
measured temperature – offset
off:
zero point offset is inactive (=0.0
°
)
8.10 ‘Power off’: automatic unit
switch-off
If no key is pressed during the switch-off delay peri-
od, the unit switches off automatically after the selec-
ted time has run down.
The desired delay time is entered in minutes.
If P.oFF = oFF, automatic unit switch-off is inactive.
9. Calibration of conductivity measurement
The individual electrode data of conductivity sensors
are stable for extremely long periods of time.
If, however, you establish deviations during tests, you
can improve measuring accuracy by performing cali-
bration.
Tintometer standard conductivity solutions serve as a
reference.
These solutions have a defined conductivity of
1413
µ
S/cm. Standard solutions with other conducti-
vity levels may also be used to calibrate the system.
The shelf life of calibration solutions is limited and is
shortened further by, among other things, inadequate
cleaning and drying of the electrode prior to insertion.
This can lead to incorrect calibration!
You should therefore always use fresh solutions for
calibration and clean the electrode using deionised or
distilled water!
Summary of Contents for AQUALYTIC SensoDirect CD 24
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