Endress+Hauser mypro CLD 431, Руководство по эксплуатации

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4.6.4 Calibration
The calibration menu of the MyPro CLM 431 /
CLD 431 is used for temperature and conduc-
tivity calibration. The conductivity calibration,
i.e. the determination of the cell constant, can
be performed with or without automatic tem-
perature compensation. The temperature
coefficient and the uncompensated conducti- vity of the calibration solutions as a function of
temperature are documented.
The calibration menu can be exited anytime
by pressing the
„F“ key; an error message
(calibration aborted) will be displayed.
C
C
C
C
F
F
F
C
F
C
F
Beginning of calibration
Place measuring cell in calibration solution.
Continue with „
C “, abort with „ F “
Temperature calibration
The measured value determined by the
MyPro is displayed. The value can be edited
directly with „
+ “ and „ – “ for adjustment to the
correct value. The MyPro automatically deter-
mines the temperature offset (see chapter
4.6.2 „Diagnostic parameter menu“)
Temperature coeff. of calibration solution
If the temperature of the calibration solution
differs from the reference temperature (instru-
ment), you must choose one of the following
alternatives to proceed:
1.)
Calibration with uncompensated
conductivity, i.e.
α
= 0.
Enter the uncomp. conductivity of the
calibration solution at the current
temperature.
2.) Calibration with automatic
temperature compensation,
i.e. enter the
α
value of the calibration
solution at the current temperature.
Conductivity calibration
Entry of conductivity of calibration solution
with „
+ “ and „ – “
Depending on preceding step:
For 1.) Determine uncomp. conductivity of
calibration solution at current
temperature and enter.
For 2.) Enter compensated value of
calibration solution at reference
temperature.
Cell constant editing may be performed
by entering the cell constant from the
nameplate or from the quality certificate of
End of calibration
Continue measurement with „ C “ or „ F “; the
current output is re-enabled.
ANZ6.CDR
Normal meas.
mode
Key Display Description
LM431CE4.CHP
mypro CLM 431 / CLD 431 conductive Operation
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