Samson Media 7 5007-1, Монтаж и эксплуатация

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3-6 EB 9510 EN
Design and principle of operation
3.4 Optional additional func-
tion
The modular design of the differential pres-
sure meter allows it to be tailored to meet
specific requirements.
3.4.1 Option modules
Additional functions are available for the
differential pressure meter by adding option
modules:
− AO: Analog output
The Analog output option module issues
an internal measuring signal (4 to
20 mA) representing the tank pressure
or, depending on the operating mode,
the filling level or differential pressure.
The analog output parameters can be
configured.
The AO: Analog input option module is
available with explosion protection.
− AI: Analog input
The AI: Analog input option module ac-
cepts 4 to 20 mA signals from filling lev -
el or pressure sensors of external equip-
ment with their own power supply.
This module works passively and has
galvanically isolated inputs.
− AIA: Analog input active
The AIA: Analog input active option
module accepts 4 to 20 mA signals from
filling level or pressure sensors of exter
-
nal equipment.
This module works actively and has a
12 V output to power external equipment
that do not have its own power supply.
3.4.2 GSM module
A GSM module is available for the 24 V ver -
sion of the differential pressure meter. The
GSM module establishes connection to the
SAM TANK MANAGEMENT web interface
over a mobile network. It ensures a secure
data exchange, polling of states as well as
monitoring and operation of the differential
pressure meter (see Fig. 3-5).
When the differential pressure meter is
ordered with the GSM module, it is already
installed upon delivery. The GSM module
can also be retrofitted (see the 'Installation'
section).
The GSM module does not function when the
differential pressure meter is operated with
the standby power supply (SPS).
3.4.3 Power supply unit with
standby power supply
(SPS)
The power supply units include a battery
compartment for a 1.5 V battery which pro -
vides standby power supply upon power
failure.
Note