Emerson Rosemount 4600 Reference Manual page 16

Configuration
September 2016
Rerange with a Field Communicator only
Fast Keys
The easiest and most popular way to rerange is to use the Field Communicator only. This
method changes the values of the analog 4 and 20 mA points independently without a
pressure input.
From the HOME screen, enter the Fast Key sequence shown.
1.
2.
Rerange with a pressure input source and Field
Communicator
Fast Keys
Reranging using the Field Communicator and a pressure source or process pressure is a way
of reranging the transmitter when specific 4 and 20 mA points are unknown.
Note
The span is maintained when the 4 mA point is set. The span changes when the 20 mA point
is set. If the lower range point is set 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.
1.
Rerange with a pressure input source and the
local zero and span targets (option D1)
1.
2.
3.
4.
10
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1, 2, 3, 1, 1
At Keypad Input select 1 and use the keypad to enter lower range value.
From Keypad Input select 2 and use the keypad to enter upper range value.
1, 2, 3, 1, 2
From the HOME screen, enter the Fast Key sequence shown to configure lower and
upper range values and follow the online instructions.
For Zero based lower range values (gauge only):
Vent the transmitter.
For Non-Zero based lower range values:
Using a pressure source with an accuracy 3 to 10 times the desired calibrated
accuracy, apply a pressure equivalent to the lower range value to the transmitter.
Using the supplied magnetic adjustment tool, touch and hold the magnetic end to
the zero adjustment target for at least two seconds, but no longer than ten
seconds.
Using a pressure source with an accuracy 3 to 10 times the desired calibrated
accuracy, apply a pressure equivalent to the upper range value to the transmitter.
Using the supplied magnetic adjustment tool, touch and hold the magnetic end to
the span adjustment target for at least two seconds, but no longer than ten
seconds.
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Reference Manual
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