WIKA DI30 - Manual (Page 24)

6 Commissoning, operation
24 WIKA operating instructions digital indicator DI30
Saving parameters
All parameters must be acknowledged by the user by pressing the [P] key for
one second. The changed parameters are then taken over as the current
operating parameters and saved in the EEPROM. This is confirmed by
horizontal bars lighting up in the display.
Example:
Save the parameters by pressing [P] for one
second.
All the newly entered data are confirmed by the unit.
If no confirmation is received, the relevant parameters have not been saved.
Example:
You receive confirmation from the unit that the
changes have been saved through the
appearance of horizontal bars in the middle
segments.
Change to the operating mode
If no key is pressed in programming mode for approx. 7 seconds, the unit
automatically returns to operating mode.
6.5 Description of the measuring input
The DI30 is equipped with a measuring input for standard signals that
enables standardised signals (e.g. 4 … 20 mA) from all kinds of different
measuring transmitters on the market to be measured directly.
Factory calibration
For this, various sensor values for 0 … 10 V, 0 … 5 V, 0 … 20 mA and 4 …
20 mA are stored in the unit and can be called up via the parameter PN0.
They are called factory calibrations, because the data were established
during production and are saved permanently in the unit. It means that a pre-
adjusted transmitter can be operated directly with the indicator, without any
need to previously connect the signal to be measured to the indicator.
The indicator can be scaled freely according to the physical dimension to be
measured.
Sensor calibration
If, on the other hand, the sensor has not been pre-calibrated, the indicator
can be adjusted and calibrated direct via the measurement together with the
sensor path. This can be selected via the parameter PN0 = 0 and is
consequently called sensor calibration.