Option
Description
Setup
Polling
The meter polls an external de-
vice for pressure data.
a. Set
Line Pressure Source
to
Poll for External Value
.
b. Set
Polling Slot
to an available slot.
c. Set
Polling Control
to
Poll as Primary
or
Poll as Secondary
.
d. Set
External Device Tag
to the HART tag of the temperature
device.
Digital communica-
tions
A host writes pressure data to
the meter at appropriate inter-
vals.
a. Set
Line Pressure Source
to
Fixed Value or Digital Communications
.
b. Perform the necessary host programming and communica-
tions setup to write pressure data to the meter at appropri-
ate intervals.
Postrequisites
The current pressure value is displayed in the
External Pressure
field. Verify that the value is
correct.
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.
•
If necessary, apply an offset.
Related information
Set up the API referral application
4.4.2
Configure the pressure input using the
Field Communicator
Pressure data is required for several different measurements. The meter does not measure
pressure. There are several different methods to obtain pressure data.
Prerequisites
You must be using gauge pressure.
If you plan to poll an external device, the primary mA output must be wired to support
HART communications.
Procedure
1.
Choose
Configure
>
Manual Setup
>
Measurements
>
External Inputs
>
Pressure
.
Configure process measurement
Configuration and Use Manual
35
Summary of Contents for CDM100M
Page 8: ...Getting Started 2 Micro Motion Compact Density Meters CDM ...
Page 12: ...Before you begin 6 Micro Motion Compact Density Meters CDM ...
Page 20: ...Configuration and commissioning 14 Micro Motion Compact Density Meters CDM ...
Page 26: ...Introduction to configuration and commissioning 20 Micro Motion Compact Density Meters CDM ...
Page 110: ...Integrate the meter with the control system 104 Micro Motion Compact Density Meters CDM ...
Page 116: ...Operations maintenance and troubleshooting 110 Micro Motion Compact Density Meters CDM ...
Page 124: ...Transmitter operation 118 Micro Motion Compact Density Meters CDM ...
Page 194: ...Using the transmitter display 188 Micro Motion Compact Density Meters CDM ...
Page 208: ...Using ProLink III with the transmitter 202 Micro Motion Compact Density Meters CDM ...