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Method
Description
Setup
Digital
communications
A host writes pressure data to
the meter at appropriate
intervals.
a. Choose
Menu
>
Configuration
>
Process Measurement
>
Pressure Compensation
>
External Pressure
.
b. Set
External Pressure
to On.
c. Perform the necessary host programming and
communications setup to write pressure data to the
transmitter at appropriate intervals.
Postrequisites
Choose
Menu
>
Service Tools
>
Service Data
>
View Process Variables
and verify the external pressure value.
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.
12.4.2 Set up pressure compensation using ProLink III
Procedure
1. Choose
Device Tools
>
Configuration
>
Process Measurement
>
Pressure Compensation
.
2. Set
Pressure Compensation Status
to Enabled.
3. Set
Pressure Unit
to the unit used by the external pressure device.
4. Enter the
Density Factor
and
Flow Factor
for your sensor.
a) Set
Process Fluid
to Liquid Volume or Gas Standard Volume, as appropriate.
b) Compare the values shown in
Recommended Density Factor
and
Recommended Flow Factor
to the values from the product data sheet.
c) To use the recommended values, click
Accept Recommended Values
.
d) To use different factors, enter your values in the
Density Factor
and
Flow Factor
fields.
The density factor is the change in fluid density, in g/cm
3
/PSI. When entering the value, reverse
the sign.
Example
If the density factor is 0.000006 g/cm
3
/PSI, enter
−0.000006
g/cm3/PSI.
Measurement support
Configuration and Use Manual
April 2019
MMI-20048166
136
Micro Motion 4200 Transmitters
Содержание Micro Motion 4200
Страница 144: ...Measurement support Configuration and Use Manual April 2019 MMI 20048166 144 Micro Motion 4200 Transmitters ...
Страница 210: ...Using the transmitter display Configuration and Use Manual April 2019 MMI 20048166 210 Micro Motion 4200 Transmitters ...
Страница 218: ...Channel combinations Configuration and Use Manual April 2019 MMI 20048166 218 Micro Motion 4200 Transmitters ...