Measuring And Sourcing Current (4 - WIKA Wally Box III CPH7600 Betriebsanleitung

6 Commissioning, operation
6.7 Measuring and sourcing current (4 ... 20 mA)
1. To measure current, use the input terminals on the front of the calibrator. Select the mA
function on the lower display. Current is measured in mA and percentage of the measuring
range. The measuring range on the calibrator is set to 0 % at 4 mA and 100 % at 20 mA.
GB
Example
If the current measured is displayed as 75 %, then the value is 16 mA.
The display will indicate "OL" when the measured current exceeds the nominal range
of current measurement (24 mA).
2. The same connections are used for the current source. Select mA-Source or mA Sim-2W
from the configuration display.
3. This selection can only be made in the lower display. Also, in source mode, the calibrator will
generate 0 ... 24 mA using its own internal 24 V supply, whereas in simulation mode the
calibrator acts as a 2-wire transmitter and requires an external 24 V supply.
4. Pressing any of the arrow keys will start the output mode and enable you to use the arrow keys
to adjust the mA output. The function keys can also be used to progress the output in either 25
% steps (4, 8, 12, 16, 20 mA) or 0 % (4 mA) and 100 % (20 mA).
5. While in the mA output mode, if the loop is broken or the value is exceeded, the calibrator will
flash "OL".
26 WIKA Operating Instruction, Model CPH7600