11
Reference Manual
00809-0100-4808, Rev DA
Transmitter Functions
October 2016
Transmitter Functions
2.9.4
Rerange with a communicator only
Reranging using only the communicator changes the values of the analog 4 and 20 mA points
independently without a pressure input.
Note
Changing the lower or upper range point results in similar changes to the span.
To rerange using only the communicator, enter the Fast Key sequence above, select
1 Keypad input
, and
follow the online instructions. Or enter the values directly from the
ONLINE
screen.
Note
If the transmitter security jumper is in the
ON
position, you will not be able to make adjustments to the
zero and span. Refer to
Figure 2-1 on page 5
for the appropriate placement of the transmitter security
jumper.
2.9.5
Rerange with a pressure input source and a communicator
Reranging using the communicator and a pressure source or process pressure is a way of reranging the
transmitter with a pressure input. When specific 4 and 20 mA points are not known process input can be
used. This method changes the values of the analog 4 and 20 mA points.
Note
When setting the 4 mA point, the span is maintained; when setting the 20 mA point, the span changes. If
setting the lower range point to a value that causes the upper range point to exceed the sensor limit, the
upper range point is automatically set to the sensor limit, and the span is adjusted accordingly.
To rerange using the communicator and a pressure source or process pressure, enter the Fast Key
sequence above, select
2 Apply values
, and follow the online instructions.
Note
If the transmitter security jumper is in the
ON
position, no adjustments can be made to the zero and
span. Refer to
Figure 2-1 on page 5
for the appropriate placement of the transmitter security jumper.
2.9.6
Rerange with a pressure input source and the local zero and span
buttons
Reranging using the local zero and span adjustments (see
Figure 2-6 on page 12
) and a pressure source
or process pressure is a way of reranging the transmitter with a pressure input and when a
communicator is not available. When specific 4 and 20 mA points are not known process input can be
used.
Note
When setting the 4 mA point, the span is maintained; when setting the 20 mA point, the span changes. If
setting the lower range point to a value that causes the upper range point to exceed the sensor limit, the
upper range point is automatically set to the sensor limit and the span is adjusted accordingly.
HART Fast Keys
1, 2, 3, 1, 1
HART Fast Keys
1, 2, 3, 1, 2