Current Output; Extension Of The Current Range; Conversion Of The Frequency Into A Flow Rate - Burkert 8012 Manuel D'utilisation

Adjustmentandfunctions
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
22
21,6
20
4
0
Fig. 25 : Curve for the current proportional to the paddle-wheel
rotation frequency
Type 8012
250 300
f (Hz)
275
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 /min., m /h, Ga/s, Ga/min., Ga/h, USGa/s,
3 3
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:
mA
21,6
20
4
0
10
Fig. 26 : Curve for the current proportional to the flow rate
English
Flow rate (l/min., for
800
880
example)
39