Siemens SITRANS P Instruções de Operação Página 73

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 234
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 72
Function Mode Display Display
Position correction 7 if the max span is exceeded by more
than 5% of the upper current limit
if the value falls below the lower
current limit
Root application point 12 if the root application point of 15%
is exceeded
if the value falls below the root
application point of 5%
Keyboard operation 2, 3, 5,
6
when the span to be adjusted is
larger than the maximum span
when the span to be adjusted is
smaller
than the minimum span
Normal operation Current exceeds the upper
saturation limit
Pressure
exceeds the upper sensor
limit.
Current falls below the lower
saturation limit
Pressure falls below the lower
sensor limit.
6.4.6 Overflow range
Description
The output signal is divided into defined ranges:
Measuring range
Saturation limits
Fault current
The transmitter emits the output current according to the device variables selected as primary
variable (PV). The working range of the current lies between 4 mA and 20 mA.
Meaning
When the measurement limits are exceeded or not reached, the measured values are correctly
displayed in the overflow range.
A ticker is displayed in the bottom line of the display showing alternately the message UNDER
or OVER and the selected unit. The possible overflow range can be adjusted via HART
communication. If either of the overflow limits are violated, the output current remain constant.
Violations of the measured value limits are output on the display by
or .
Note
The
setting of the overflow range and the fault current range can be freely selected via HART
communication.
Reference
NAMUR recommendation NE43 dated 03.02.2003
"Standardization of the signal level for the breakdown information of digital transmitters"
Operation
6.4 Display
SITRANS P, DS III series with HART
Operating Instructions, 09/2012, A5E00047092-08 71
Vista de página 72
1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 233 234

Comentários a estes Manuais

Sem comentários