Method Description Setup
mA Input An external device sends
temperature data to the meter
via the mA Input. This data will
be available in addition to the
internal temperature data.
a. Choose Configure > Manual Setup > Inputs/Outputs >
Channel D.
b. Set Assignment to mA Input.
c. Choose mA Input > mA Input Settings.
d. Set Var Assignment to External Temperature.
e. Set Upper Range Value and Lower Range Value
appropriately.
f. Set Damping appropriately.
Digital
communications
A host writes temperature data
to the meter at appropriate
intervals. This data will be
available in addition to the
internal RTD temperature data.
a. Choose Configure > Manual Setup > Measurements >
Optional Setup > External Pressure/Temperature >
Temperature.
b. Set External Temperature to Enable.
c. Perform the necessary host programming and
communications setup to write temperature data to the
meter at appropriate intervals.
Postrequisites
Choose Service Tools > Variables > Process > External Temperature and verify the value for External
Temperature.
Need help?
If the value is not correct:
• Ensure that the external device and the meter are using the same measurement unit.
• For polling:
— Verify the wiring between the meter and the external device.
— Verify the HART tag of the external device.
• For the mA Input:
— Verify the wiring between the meter and the external device.
— Verify the power configuration for Channel D. If external power is required, ensure that the loop is
powered.
— Verify the Lower Range Value and Upper Range Value settings for the mA Input.
— Perform an mA Input trim.
— Adjust the mA Input damping value.
• For digital communications:
— Verify that the host has access to the required data.
— Verify that the host is writing to the correct register in memory, using the correct data type.
Configuration and Use Manual Configure process measurement applications
MMI-20025166 March 2019
Configuration and Use Manual 89
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