Battery Operation - Diehl SHARKY FS 473 Guide D'installation

Installation in both horizontal and vertical
pipe sections is possible, however must
never be such that air bubbles can collect
in the meter (see Fig. II).
The flow sensor must always be filled with liquid.
Avoid frost at the meter.
ƒ
We recommend installing the flow sensor in a
tilted position (approx. 45°).
It is recommended that shut-off valves
are fitted upstream and downstream of
the flow sensor to simplify its demount-
ing.
When demounting, an open-ended spanner must
be used on the bottom of the sensor (see Fig. IV).
3. Power supply
3.1 Battery
In the standard version, a 3.0 VDC lithium battery
is integrated that has up to 12 years life (configu-
ration dependent).
ƒ
The battery must not be recharged or
short-circuited.
ƒ
Ambient temperatures below 35 °C have a
positive effect on battery lifetime.
3.2 External power supply (e.g. via
meter electronics)
ƒ
Power supply 3.0 ... 5.5 VDC
ƒ
Power consumption < 100 mAh per year
ƒ
Pulse current < 10 mA
-8-
English
4. Connection diagram
The function of the individual coloured
cables are shown in the following illustra-
tions.
Damages or failure of the meter can occur, if the
cables are reversed or wrongly connected.

4.1 Battery operation

SHARKY FS 473
4.2 Galvanically isolated useful pulse
Test pulse
Useful pulse
SHARKY FS 473
4.3 External power supply 3.0 – 5.5 V
+ 3 ... 5 V
Test pulse
Useful pulse
SHARKY FS 473
yellow
white
GND
blue
N.C.
brown
yellow
GND
blue
white
brown
brown
yellow
white
GND
blue