Output Current - bürkert 8045 Bedienungsanleitung

4.4.4 Output Current

Within this option the measuring range can be defined corresponding to the output current
of 4-20 mA.
The beginning of the measuring range might be higher than the end (inverted signal),
eg/ 20 to 180 l/min corresponds to 20-4 mA.
The adjustments (engineering unit and decimal point) selected for the flow will be valid
within this option.
The minimal difference between the flow rate at 4 mA and 20mA is dependent on the
position of the decimal point.
Number of decimals
Minimal flow difference
CURRENT
PULSE
In case of electronic failure the device will emit an error signal of 22 mA.
The figure below shows an example of relationship between the 4-20mA output and the as-
sociated measuring range
mA
20
4
Figure 4.1 - Output Signal
8045
CALIBRATION
0 1
2 0.2
Enter the beginning of the measuring range
20
25
2
0.1
Enter the end of the
measuring range
Real flow
l/ min
180
3
0.101