Transmitter
Quick Reference Instruction Manual
Wiring
IM01U10A00-00EN-R, 2nd edition, 2017-08-29
39 / 54
7.4.5 Output signals
Galvanic isolation
All circuits for inputs, outputs and power supply are galvanically isolated from each other.
Active current
output
lout
One or two current outputs are available depending on MS code position 13.
Depending on the measured value, the active current output delivers 4 – 20 mA.
It may be used for output of the following measured values:
▪ Flow rate (mass, volume, net partial component flow of a mixture)
▪ Density
▪ Temperature
▪ Pressure
▪ Concentration
For HART communication devices, it is supplied on the current output
lout1
. The current
output may be operated in compliance with the NAMUR NE43 standard.
Value
Nominal output current
4 – 20 mA
Maximum output current range
2.4 – 21.6 mA
Load resistance
≤ 750 Ω
Load resistance for secure HART communication
230 – 600 Ω
Additive maximum deviation
8 µA
Additive output deviation for deviation from 20 °C ambient
temperature
0.8 µA/ °C
Iout+
Iout-
ROTAMASS
1
Fig. 23:
Active current output connection
lout
HART
①
Receiver
