Bürkert 8012 Series, Operating Instructions Manual, Page: 9 / 136

9
Generalinformation
Type 8012
Depending on the version, the electrical connection is made using a
1 m long cable or a multi-pin M12 fixed connector which position can
be adjusted.
Depending on the version, the device is equipped:
• with one pulse output
• or one pulse output and one 4-20 mA current output.
Paddle-wheel
SE12
S012
Location of the LEDs
(depending on the version)
5.2.2. Version with pulse output
On the 16 basic versions of the SE12 module (see chap. 5.5), the
NPN pulse output generates a signal with a frequency f proportional
to the rotation frequency of the paddle-wheel.
To obtain a flow rate Q, this frequency must be divided by a propor-
tionality factor K according to the following formula:
Q = f/K
Table 1 : Characteristics of the pulse output
characteristic
of the pulse
output possible configura-
tions (on request) pulse output of
the basic versions
Transistor wiring • NPN
• or PNP NPN
Behaviour of the
output • Frequency propor-
tional to the rotation of
the paddle-wheel (see
above)
• or frequency propor-
tional to a volume (see
chap. 9.2.1)
• or switching mode
(see chap. 9.2.2)
• or mode detecting the
immediate or delayed
change of circulation
direction of the fluid
(only on versions with
optical sensor) (see
chap. 9.2.3)
Frequency propor-
tional to the rotation
of the paddle-wheel
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