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Quick Installation Guide
00825-0100-4593, Rev BA
July 2009
Rosemount 1151
14
STEP 6 CONTINUED...
Using the Transmitter Zero Adjustment Buttons
Perform the following steps to perform a rerange using the zero adjustment buttons (see
Figure 3).
1. Apply a pressure equivalent to the lower calibrated value on the high side of the
transmitter.
2. Remove the circuit side cover to expose the span and zero buttons. Hold both the span
and zero buttons down simultaneously for at least five seconds to activate the controls.
3. Press the zero button for five seconds to set the 4 mA point. Verify that the output is 4
mA.
4. Apply a pressure equivalent to the higher calibrated value to the high side of the
transmitter.
5. Press the span button for five seconds to set the 20 mA point. Verify that the output is 20
mA.
4-20 mA Output Trim
A 4-20 mA output trim adjusts the transmitter milliampere output to match plant standards.
This procedure is used to trim the transmitter using a current meter.
Using the HART Communicator
HART Fast Keys Steps
1, 2, 3, 2, 2 1. Equalize or vent the transmitter and connect HART
communicator.
2. At the menu, input the HART Fast Key sequence.
3. Follow the commands to perform a full trim.
4593_Rev_BA.fm Page 14 Friday, August 7, 2009 3:38 PM