wtw DIQ/S 181, Operating Manual

Page: 53 / 104

DIQ/S 181
Operation
53
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Automatic switch-on of
the maintenance
condition
The maintenance condition is automatically activated

during calibration. After calibration the sensor remains in the
maintenance condition until the maintenance condition is switched
off manually (see section 4.5)

during a compressed air cleaning cycle. After the cleaning cycle is
finished the maintenance condition is automatically switched off
again.
4.4.3 Log book / Sensor status S01
In the menu SENSOR STATUS S01 you can query the following infor-
mation on the connected sensor:

Type and series number

Software status

Error and info messages ("log book")

Data of the last calibration (only for a sensor that can be calibrated)
Fig. 4-8 SENSOR STATUS S01
Log book The log book is a list of messages related to the connected sensor. If
there is a new message the error symbol in the header of the measured
value display flashes:
The flashing of the error symbol only stops after all detailed message
texts in the log book have been opened and marked with a checkmark
(

). The operating sequence to do this is described on Seite 55.
Calibration data You can view the data of the last calibration of the sensor under the Cal
menu item. With a sensor that was not yet calibrated, this menu item is
missing. The symbol in the
Cal line quotes the validity state:
h
Flashes if a new or unacknowledged error message is present
in the log book that requires immediate action.
The error symbol also flashes if the operational voltage or
communication are faulty. You can check this in the
PROP-
ERTIES / SYSTEM STATUS menu (see section 4.4.1).