Method
Description
Setup
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 Variables
>
External
Temperature
.
b. Set
Temperature Compensation
to Enable.
c. Perform the necessary host programming and
communications setup to write temperature data to the
meter at appropriate intervals.
2. (A, B, C, and D tables only) Choose the method to be used to supply pressure data, and perform the
required setup.
Method
Description
Setup
Digital
communications
A host writes pressure data to
the meter at appropriate
intervals.
a. Choose
Configure
>
Manual Setup
>
Measurements
>
Optional Setup
>
External Variables
>
External Pressure
.
b. Set
Pressure Compensation
to Enable.
c. Perform the necessary host programming and
communications setup to write pressure data to the
transmitter at appropriate intervals.
Postrequisites
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 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.
5.1.4 API tables supported by the API referral application
The API tables listed here are supported by the API referral application.
Table 5-1: API tables, process fluids, measurement units, and default reference values
Process fluid
API tables
(calculations)
Referred density
(API): unit and
range
Default
reference
temp
Default
reference
pressure
API standard
Referred
density
CTL or
CTPL
Generalized crude
and JP4
5A
6A
Unit: °API
Range: 0 to 100 °API
60 °F
0 psi (g)
API MPMS 11.1
Configure process measurement applications
Configuration and Use Manual
April 2019
MMI-20048166
54
Micro Motion 4200 Transmitters