Reference Manual
00809-0100-4022, Rev AA
July 2002
4-7
Model 4600
Full Trim
NOTE
Use a pressure input source that is at least three times more accurate than
the transmitter, and allow the input pressure to stabilize for ten seconds
before entering any values.
HART Communicator
To calibrate the sensor with a HART Communicator using the full trim
function, perform the following procedure:
1. Assemble and power the entire calibration system including a
transmitter, HART Communicator, power supply, pressure input source,
and readout device.
2. From the
HOME
screen, enter the fast key sequence shown.
3. Select 2: Lower sensor trim.
NOTE
Select pressure input values so that low and high values are equal to or
outside the 4 and 20 mA points. Do not attempt to obtain reverse output by
reversing the high and low points. The transmitter allows approximately five
percent URL deviation from the characterized curve established at the
factory.
4. Follow the commands provided by the HART Communicator to complete
the adjustment of the lower value.
5. Repeat the procedure for the upper value, replacing 2: Lower sensor trim
with 3: Upper sensor trim in Step 3.
AMS
Right click on the device and select “Calibrate,” then “Sensor trim” from the
menu
.
1. Select “Lower sensor trim.”
2. Click
Next
after setting the control loop to manual.
3. Click
Next
after applying appropriate pressure to sensor.
4. Select
Next
to acknowledge the loop can be returned to automatic
control.
5. Select
Finish
to acknowledge the method is complete.
6. Right click on the device and select “Calibrate,” select “Sensor trim” from
the menu
.
7. Select “Upper sensor trim” and repeat steps 2-5.
Fast Keys
1, 2, 3, 3
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