Perform A Loop Test - Emerson Micro Motion 9739 MVD Configuration And Use Manual

Lower Range Value specifies the value of Mass Flow Rate to be represented by an output level of
0 mA or 4 mA.
a. Activate Scroll until AO 1 4 mA or AO 1 0 mA appears on the display, then activate Select.
b. Define each character in Lower Range Value, including the sign.
Use Select to highlight a specific character. Use Scroll to set the value of the character.
c. When you have set all characters as desired, activate Scroll and Select simultaneously until
SAVE/YES? flashes on the display, then activate Select to write the value to transmitter memory.
5. Set Upper Range Value (URV).
Upper Range Value specifies the value of Mass Flow Rate to be represented by an output level of 20 mA.
a. Activate Scroll until AO 1 20 mA appears on the display, then activate Select.
b. Define each character in Upper Range Value, including the sign.
Use Select to highlight a specific character. Use Scroll to set the value of the character.
c. When you have set all characters as desired, activate Scroll and Select simultaneously until
SAVE/YES? flashes on the display, then activate Select to write the value to transmitter memory.
6. Activate Scroll until AO EXIT appears on the display, then activate Select.
7. Return the display to normal operation (displaying process data).
a. Activate Scroll until IO EXIT appears on the display, then activate Select.
b. Activate Scroll until CONFIG EXIT appears on the display, then activate Select.
c. Activate Scroll until OFF-LINE EXIT appears on the display, then activate Select.
d. Activate Scroll until EXIT appears on the display, then activate Select.
Tip
Another way to exit the off-line menu is to rely on the time-out feature. If you have not used
the off-line menu for approximately 60 seconds, the display will automatically return to normal
operation.
2.4

Perform a loop test

A loop test is a way to verify that the transmitter and the receiving device are communicating properly.
A loop test also helps you know whether you need to trim mA outputs. Performing a loop test is not
a required procedure. However, Micro Motion recommends performing a loop test for every input or
output available on your transmitter.
Procedure
1. Test the mA output.
a. Choose OFFLINE MAINT→SIM→AO1 SIM, and select SET 4 MA or another mA output value.
Dots traverse the display while the output is fixed.
b. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct
the discrepancy by trimming the output.
Configuration and Use Manual
Quick start with the display
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