WIKA Pascal 100 - Manual (Page 60)

6 Commissioning, operation
60 WIKA Operating Instruction, Pascal 100 and Pascal 100/IS
GB
6.4.2.9 HART scale adjust
ADJ.SCL permits to align the range of PV to the Lower and Upper mA generation values.
The Lower value of PV is the value at which the transmitter will generate the 4 mA nominal value,
and the Upper value is the value at which the transmitter will generate the 20 mA nominal value.
Here is described the “automated” procedure that permits to align in “real-time” these values. The
user can also change them manually in the “HART data” page as seen before.
If the user wants to adjust the scale a channel of the same input type of the transmitter has to be
configured as REF channel. If no REF channel is configured first an error will be shown.
Press ADJ.SCL menu and the following is shown (assuming that we are using a Pt100 transmitter,
e REF simulation Pt100 channel is configured as Channel 3):
Set the REF Channel to the desired value that permits to output by the transmitter the 4mA value
(example 0°C). When the value is stable press ADJ. LRV button.
Now set the REF Channel to the desired value that permits to output the transmitter the 20mA
value (example 150°C). When the value is stable press ADJ. URV button.
Now the transmitter will generate 4 and 20 mA between 0 °C
– 150 °C.