41
Process Variables Available for Fieldbus
Process variables which can be assigned to Analog Input Blocks (AI):
Measured value
Unit of measure
Saturation (Air)
%
Saturation (O
2
)
%
Concentration
mg/l
Concentration
ppm
Volume concentration (GAS)
%
Volume concentration (GAS)
ppm
Sensor current
nA
Temperature
°C
Temperature
°F
Air pressure
mbar
O
2
partial pressure
mbar
Zero
nA
Slope
nA/mbar
Cal timer (adaptive)
h
Current input
mA
Calculation Block O
2
/ O
2
Measured value
Unit of measure
Delta saturation (Air)
%
Delta saturation (O
2
)
%
Delta temperature
°C
Delta O
2
concentration
mg/l
Delta O
2
concentration
ppm
Delta volume conc. (gas)
%
Delta volume conc. (gas)
ppm
O
2
Modules
