Hydro Logger H1
User manual
FIEDLER
electronics for ecology
7
connected sensors and transducers. The magnitude of the supply voltage is ad-
justable in the range of 6-17 V DC.
Logger - The telemetry station transmits the measured values via GSM/GPRS
communication to a database on the server. In addition, the station can send
warning or informative SMS and receive query or control SMS. Via GSM/GPRS
data communication it is also possible to change parameter settings and per-
form FW upgrades.
Setting of all H1 station parameters is done via MOST. Parameters can be chan-
ged from a PC (laptop) via cable connection or remotely via web browser and
data server.
For the power supply of the instrument is used 1 lithium battery size D, which
allows many years of operation of the instrument even with daily transmission
of measured data to the server via GSM/GPRS network. When the battery is
depleted, indicated by the remaining capacity on the K13 control channel drop-
ping to zero, the user can replace the battery himself.
An external power source (battery or 12V DC power supply) can be connected
to the instrument and the internal battery can only be used as a backup power
source in case of external power failure.
3.1.
Overview of program functions and procedures
The following overview briefly summarizes the program procedures and functi-
ons contained in the H1 station FW, which are fully available to the station users
during its parameterization and setup. Most of these functions will be described
in detail in the "Setup" chapter.
▪
Calculation of instantaneous and cumulative flow from pulses from REED
and OPTO sensors.
▪
Calculation and storage of the measured quantity in set units of measure-
ment.
▪
Sliding sum over a configurable time interval over a selected channel (flow
or rainfall) to activate an SMS alarm message.
▪
Calculation of instantaneous flow rate and leakage volume for commonly
used gauge troughs and gauge overflows (Parshall or Venturi troughs, Tho-
mson overflow, ...). In the H2 instrument, 14 equations for frequently used
profiles are preset.
▪
Flow calculation for composite Parshall troughs (double and triple combina-
tions).
▪
Calculation of the flow rate from the tabulated level/flow relationship.
▪
Calculation of rainfall and precipitation totals using pulse weighting, but also
using a dynamically calibrated rain gauge table (H2 only)
▪
Sum and difference functions over two channels (sum and difference of me-
asured quantities). Calculation of moving average and trend over any chan-
nel.
▪
The nonlinear output signals can be corrected by a 2nd order polynomial
separately for each of the set channels.
G S M
c o m m u n i c a t i o n
P a r a m e t e r
s e t t i n g s
B a t t e r y p o w e r
s u p p l y
E x t e r n a l p o w e r
s u p p l y
C a l c u l a t i o n s
Содержание H1
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