3.4.3 SENSORS SETTINGS
This menu consists of two screens. In the first of them you can define what sensors will be
connected the controller, and therefore their correct operation should be checked.
Sensor alarm
– leaving the sensor crossed out informs the controller that give sensor will
not be connected. The selected sensors are being checked only during process running
(before you can disconnect them freely). If during process running the controller detects a
problem, appropriate message will be displayed and acoustic signal will sound.
From this moment, the user has a minute to confirm/cancel the error by pressing any button,
otherwise after indicated time the controller will stop the process.
The error will be cancelled automatically if the sensor comes back to its normal operation.
Next error from the same sensor would appear only if even for a moment correct signal from
this sensor reappear, it means permanently defected sensor would be signaled only once.
Such method of proceeding ensures determined reaction to an error, however excludes
immediate and not necessary column shut down e.g. due to accidental sensor
disconnection. It gives the user possibility to make proper decision without needless stress.
Head sensor as
– to select head or cooler.
This function brings also changes in the main screen or process menu. Setting the sensor
as a head sensor would add to menu an additional option of process ending after obtaining
at it the specified temperature (without it, still the other sensors will be selectable).
Setting the sensor as a cooler sensor would add an additional option of the cooler
temperature control.
Reading correction.
This option enables correction of the temperature sensors readings.
Value in parenthesis shows an actual temperature taking into account the correction
entered. Please remember the DS18b20 sensors are quite good thermometers and
practically offers much smaller error then described in the specifications. Small difference
from the actual temperature is meaningless for the controller, so this correction is purely a
cosmetic function. Differences exceeding a few degrees might indicate sensor defect.
4. PROCESS SETTINGS MENU
Here you can configure the entire process. To enter this menu, press the
button at the
moment when main screen is visible and no parameters are being changed. To exit this
menu, pres the same button again. The
buttons rewind the menu or change
parameters values after entering the editing menu.
Entering the editing of a given screen, moving to next parameters, and exiting the editing is
possible with the
button.
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Summary of Contents for SKN
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