IS IT POSSIBLE TO CALIBRATE A LEVEL TRANSMITTER INDICATOR(ABB)
USING HART COMMUNICATOR.? I MEAN TO CHANGE FROM ONE UNIT TO
ANOTHER WITHIN INDICATOR (EG. INCH TO FEET)...? PLZ NOTE
THAT I HAVE MADE THE UNIT CHANGE IN TRANSMITTER USING HART
COMMUNICATOR..BUT WHAT ABOUT THE INDICATOR..?
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Answer Posted / sam
Ok I think I understand what you are asking. In most SMART
transmitters you have a digital indication on the
transmitter and you want to change what is displayed on this
indicator. You also said that you have changes the unit of
measure inside the transmitter with the HART, and this also
changed the UOM that is displayed.
There is a different parameter that you need to modify to
change the display. The parameter is normally something like
"set disply" or something like that.
Be aware that it will only display UOM or percentage or
display a switching between the two. What ever you have set
your UOM to inside the transmitter, will be displayed on the
indicator as the UOM. You cannot set the UOM to mmH2O inside
the transmitter and then display mBar on the display.
Also note that for a level application this display is
normally set to percentage and not UOM. If the operator look
at it he needs to see % level and not mm level. In a
pressure, flow or temp applications you want this display to
indicate UOM again.
Good luck
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