Service documentation series KB/KBF
BB / JTU 25.06.2000
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Operate the unit until the required humidity is reached and allow to settle (cf. Point 10). When the
unit has reached the required humidity, please allow it to continue running for approx. 0.5 hours -
only then is the unit reliably adjusted and ready for calibration.
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Read off the humidity displayed on your measuring instrument (%r.H.) and compare this with the
controller display.
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If the controller display deviates from the measured value, parameter C611 and/or C612 must be
re-entered into the ”SD06” sub-menu.
Two fixed points can be set with C611 and C612, where C611 corresponds to the pivot of the
characteristic curve and C612 corresponds to the top fixed point.
It is also possible to change only the top fixed point ”C612”, whereby a linear displacement of the
whole characteristic curve is obtained. This method is only recommended if you are working with
one
humidity value.
The unit is calibrated at 20% r.H. or 80% r.H. at the factory
If you are working with two or more humidity values, you must proceed as follows:
Enter the measured value (lower value) at C611 (you must do this even if the value of the
measuring device does not deviate from the controller value !).
Enter a set value again (higher than the first), and wait for a steady condition again. Compare the
controller display with the value displayed on the measuring device. If there is a variation you
must enter the value displayed on the measuring device at C612.
You can return to the original menu by using the ”Enter” key and then ”Pgm”.
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Switch the unit off at the main switch. Remove the controller tray from the controller housing as
described above. Set the S 301.2 separate switch and insert the controller tray into the controller
housing again.
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