XZR400 Series User’s Manual
42
97472 Issue 3, August 2018
OPERATION
3.6.1 Analog
1
The Analog Output 1 screen (5.1) sets the parameters for the 0/4-20 mA output.
•
Touch the area to select it and change it.
•
Enter the new numeric value on the virtual keypad.
• Click
OK
to con
fi
rm or
Cancel
to discard the changes.
Analog 2
Analog output
5.1
4-20 mA
Start of scale
Unit
End of scale
Range
O2 Linear
0.10%
%
10.00%
0-20 mA
Analog 1
Figure 37
Analog Output Screen
Area
Function
4-20 mA
Con
fi
guration of the 0/4-20 mA analog output No 1.
LIN
: the output voltage must be linearly proportional to the oxygen
measurement value.
LOG
: the output voltage must be a logarithmic function with respect to
the oxygen measurement value. Use this option when the signal span is
greater than 3 decimal counts.
A current of 3.80 mA (4-20 mA output con
fi
gured) or 21 mA is
automatically generated when there is a general fault if:
•
oven temperature is lower than 30°C or higher than 50°C
from the setpoint
• thermocouple
rupture
•
fl
ow less than 0.5 and greater than 3.5 l/h
•
internal wiring fault
Start of scale
Con
fi
guring the concentration for the low scale and the measurement
unit. Select a value and a unit corresponding to the concentration to be
measured.
Unit
Con
fi
guration of the unit in which the value is expressed (% or ppm).
End of scale
Con
fi
guring the high scale concentration and the measurement unit.
Select a value and a unit corresponding to the concentration to be
measured.
NOTE: the difference between the low scale and high scale value
is limited to three decimal places to ensure correct resolution.
This limitation only applies to a linear output type.
Range
Con
fi
guration of the analog output (0-20 or 4-20 mA).
Returns to the Main Menu screen.
Analog 2
The information is similar to that of the Analog 1 menu and can be reached by touching
the Analog 2 area. When this option is not available, the display shows
Option not
available.
