Battery Operation - Diehl Sharky FS 473 Instrucciones De Montaje

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
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 con-
nected.

4.1 Battery operation

SHARKY FS 473
4.2 Galvanically isolated useful pulse
Test pulse
Useful pulse
SHARKY FS 473
-8-
4.3 External power supply 3.0 – 5.5 V
Test pulse
Useful pulse
SHARKY FS 473
5.
The flow sensor has two pulse outputs for connec-
tion to a heat meter.
ƒ
Useful pulse
ƒ
Test pulse (high resolution for testing labora-
tories)
The electrical data of the useful pulse are defined
as:
Designation
External power supply
Output current
Open collector (drain)
yellow Cable length to the partial
unit energy meter
Output frequency battery
supplied
white
Output frequency with
external power supply
GND
Useful pulse value
blue
N.C.
brown
Pulse duration
Potential-free contact
yellow
(optional)
GND
blue
white
brown
English
+ 3 ... 5 V
Communication
Value
UC < 30 V
< 20 mA with a residual
voltage of < 0.5 V
< 10 m
< 20 Hz
< 150 Hz
10 ml ... 5000 l (depend-
ent on the rated value and
power supply)
1 – 250 ms ± 10 %;
Pulse duration < Pulse
pause
brown
yellow
white
GND
blue