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UA 410 Family: How can pressure transmitters with a pressure range from -1 to 7 bar be parameterised in the controller?

UA 410 Family: How can pressure transmitters with a pressure range from -1 to 7 bar be parameterised in the controller?



The value indicated on the pressure
transmitter is relative to the ambient pressure (1 bar). However the
pressure transmitter is calibrated in the controller on the basis
of the absolute pressure. The absolute pressure cannot be negative. For
example, in order to parameterise a transmitter with the relative
pressure indication of –1 bar (at 4 mA and 0 V) and 7 bar (at 20 mA and
10 V) the ambient pressure (1 bar) must be added. In this example, the
entry is carried out as follows: 0 bar...8 bar.

Calculation:
p_absolute (pressure for the entry in the pack controller) =
p_relative (pressure indication on the transmitter) + 1 bar (ambient pressure) 

UA 410 Family: How can pressure transmitters with a pressure range from -1 to 7 bar be parameterised in the controller?



The value indicated on the pressure
transmitter is relative to the ambient pressure (1 bar). However the
pressure transmitter is calibrated in the controller on the basis
of the absolute pressure. The absolute pressure cannot be negative. For
example, in order to parameterise a transmitter with the relative
pressure indication of –1 bar (at 4 mA and 0 V) and 7 bar (at 20 mA and
10 V) the ambient pressure (1 bar) must be added. In this example, the
entry is carried out as follows: 0 bar...8 bar.

Calculation:
p_absolute (pressure for the entry in the pack controller) =
p_relative (pressure indication on the transmitter) + 1 bar (ambient pressure) 

UA 410 Family: How can pressure transmitters with a pressure range from -1 to 7 bar be parameterised in the controller?



The value indicated on the pressure
transmitter is relative to the ambient pressure (1 bar). However the
pressure transmitter is calibrated in the controller on the basis
of the absolute pressure. The absolute pressure cannot be negative. For
example, in order to parameterise a transmitter with the relative
pressure indication of –1 bar (at 4 mA and 0 V) and 7 bar (at 20 mA and
10 V) the ambient pressure (1 bar) must be added. In this example, the
entry is carried out as follows: 0 bar...8 bar.

Calculation:
p_absolute (pressure for the entry in the pack controller) =
p_relative (pressure indication on the transmitter) + 1 bar (ambient pressure) 
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