Siemens ET 78X Series Manual de usuario descargar pdf (Pagina 10)

Analyzer SIPAN 32, SIPAN 32X and SIPAN 34

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Siemens PA 20 · 1999

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Mode of operation

MeasuredĆvalue processing

The signals delivered by the analog input amplifiers are

processed into a temperatureĆcompensated value by the

digital data processing function.

Conductivity

With all three measuring procedures (2EL, 4EL and IND), a

squareĆwave or sineĆwave AC voltage is applied to the

sensors. The magnitude and frequency depend on the

measuring procedure. The current output by the sensor is a

measure of the conductivity of the medium.

Temperature compensation

Either Pt 100 or Pt 1000 thermometers can be connected to the

analyzers. The measurement is designed as a threeĆwire

system. The type of thermometer connected is recognized

automatically.

Cleaning function (option with SIPAN 34)

3 relay contacts can be triggered via a timer in order to control

a changeover fitting and to apply cleaning and flushing

solutions.

Ex protection (SIPAN 32X)

Analyzers with type of protection "Increased intrinsic safety"

EEx ia can be mounted in potentially explosive atmospheres

(zone 1). The conformity certificate corresponds to the

European standard (CENELEC).

Parameter sets (option)

The analyzer contains complete parameter sets for 4 methods

which can be set independent of one another. Thus optimum

adaptation is possible in a process in which different media are

to be measured in succession in one line. Selection of the

respective parameter set can be controlled externally.

Depending on the parameter settings of the analyzer, the

following functions are executed in addition to output of the

measured value:

SIPAN

Functions

32,

32X

Output of measured signal and temperature on the

display

X X

Output of measuring range and trend on the

display

Switching of respective parameter set onto the

display

Conversion of measured signal into % w/w X X

Output of temperature via the second current output X X

Limit monitoring X X

Monitoring of sensor X X

Digital communication via the interface X

Diagnostic functions X X

Cleaning and timer function X X

PI controller X

Software clock X X

Logbook X X

Illuminated display X

Output of measuringĆpoint name on the display X

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 37 38

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Siemens ET 78X Series Manual de usuario Pagina 10

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