WIKA DI35 - Manual (Page 29)

6 Commissoning, operation
WIKA operating instructions digital indicator model DI35-M 29
Changing from programming to operating mode
If no key is pushed in the programming mode for about 7 seconds, the unit
will return automatically to operating mode. Before „SAVE“ will be displayed
until the next measuring value is displayed.
6.5 Description of the measuring input
Universal measuring input
The DI35-M is equipped with a universal measuring input that enables the
signals from all kinds of different sensors to be measured direct. So that the
unit can work according to the signal generated by the sensor, the input must
be configured. The basic parameter is always set under PN0.
CAUTION!
For the unit to function correctly, it is absolutely essential that
the right sensor is parameterized under program number 0. If
a wrong sensor is parameterized there, the operating
behavior may be impaired.
Setting / Calibration of the measuring input
All the units are calibrated in the factory, whereby offset and full scale have
been saved for the various measuring ranges. Via terminal connections and
the choice of the measuring input under PN0, different types of input signals
can be worked up.
Factory calibration current / voltage under PN0 = 1…12
For these parameters, new scaled display values can be allocated which are
used for scaling the measurement on the display. For the offset, an input
signal of 0 is assumed and for full scale, the specific full scale of the
parameterized measuring range.
For parameterization, no sensor signal has to be applied because stored
values are used. Because of the differing input signals, the corresponding
input configuration must be parameterized via PN0.
For the sensor signal with 4...20 mA, for example, PN0 = 3 has to be
parameterized.