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Hydro Logger H1
User manual
16
electronics for ecology
FIEDLER
The external power supply of the H1 station is particularly suitable for use in cases
where the sensor connected to the station has a high current consumption or
where data transmissions to the server are to be made more frequently than once
a day or in cases where warning or informative SMS are sent frequently.
The internal lithium battery is automatically disconnected when external power is
applied and serves only as a backup power source in case of external power failure.
3.6.3.
Connecting H1 to an external power supply
The external power supply can consist of a mains power supply or a solar panel
assembly, a maintenance-free battery of suitable voltage and capacity (usually
12V/9Ah) and an RS13 charge controller to prevent overcharging the battery.
The battery should be supplemented by the power supply itself, which must
then have a suitable output voltage (13.75 V DC).
The external supply voltage is
connected to terminals 1 (+Uext)
and 2 (GND). The maximum size
of the external power supply is
15 V DC. Higher voltages can
cause damage to the protection
circuits and to the Hydro Logger
H1's own DC/DC converter. The
external voltage magnitude is
periodically measured and sto-
red in control channel K9.
The high efficiency of around 90% and the virtually zero self-consumption of the
internal inverter do not burden the external power supply with a continuous con-
sumption, but only when the Hydro Logger wakes up from sleep. Between mea-
surements, the Hydro Logger H1 is put to sleep and only the inverter's quiescent
current, which is on the order of tens of
µA
and less than the battery's self-discharge
current, is drawn from the external power supply (usually a 12 V battery).
CONNECTING H1 TO THE SOLAR PANEL
The photovoltaic solar panel has an output voltage of up to 17 V. Therefore, it
is connected to the battery via a limiting charging regulator RS13, which on the
one hand switches off the charging of the battery after its full charge and on the
other hand ensures disconnection of the battery from the load in case the bat-
tery voltage drops below 11 volts and thus prolongs the life of the used battery.
C l a m p s f o r
c o n n e c t i n g
e x t e r n a l p o w e r
s u p p l y
L o w i d l e p o w e r
c o n s u m p t i o n f r o m
a n e x t e r n a l
s o u r c e
Summary of Contents for H1
Page 1: ...Small telemetry station for water applications H1 H2 Hydro Logger user manual version 1 10 ...
Page 2: ...Hydro Logger H1 User manual 2 electronics for ecology FIEDLER ...
Page 80: ...Hydro Logger H1 User manual 80 electronics for ecology FIEDLER Notes ...
Page 81: ...Hydro Logger H1 User manual FIEDLER electronics for ecology 81 ...