Bürkert 8012 Series, Operating Instructions Manual, Page: 39 / 136

39
Adjustmentandfunctions
Type 8012
9.3. current output
The current output, if one exists, can be parametered with the following
functions:
• an extended output range or the current output range corresponding
to a flow range
• an attenuation of the current variations, different from that of the
basic versions.
9.3.1. extension of the current range
The current output of the device can be configured to deliver a current
varying from 4 to 21.6 mA, depending on the paddle-wheel rotation
frequency.
mA
0
f (Hz)
21,6
4
275
250
20
22
300
Fig. 25 : Curve for the current proportional to the paddle-wheel
rotation frequency
9.3.2. conversion of the frequency into a
flow rate
The 8012 can be parametered to convert the paddle-wheel rotation
frequency into a flow rate, in a unit specific to the application.
In this case, the 8012 is parametered with the K factor of the device
and the desired flow rate unit.
The following flow units are available:
l/s, l/min., l/h, m
3
/min., m
3
/h, Ga/s, Ga/min., Ga/h, USGa/s,
USGa/min., USGa/h.
The current output then delivers a current of 4 to 20 mA or 4 to 21.6 mA
proportional to a flow rate range:
Flow rate (l/min., for
example)
mA
0
20
4
800
10
880
21,6
Fig. 26 : Curve for the current proportional to the flow rate
English