Emerson MICRO MOTION 2700, Руководство по конфигурации и использованию, Страница: 81 / 374

9. If you want to use digital communications, click Apply , then perform the necessary
host programming and communications setup to write temperature data to the
transmitter at appropriate intervals.
Postrequisites
If you are using an external pressure value, verify the setup by checking the
External Pressure
value displayed in the Inputs area of the main window.
4.9.3 Configure pressure compensation using the
Field Communicator
Prerequisites
You will need the flow factor, density factor, and calibration pressure values for your
sensor.
• For the flow factor and density factor, see the product data sheet for your sensor.
• For the calibration pressure, see the calibration sheet for your sensor. If the data is
unavailable, use 20 PSI.
Procedure
1. Choose
Online
>
Configure
>
Manual Setup
>
Measurements
>
External Pressure/Temperature
>
Pressure .
2. Set
Pressure Compensation
to
Enabled
.
3. Enter
Flow Cal Pressure
for your sensor.
The calibration pressure is the pressure at which your sensor was calibrated, and
defines the pressure at which there is no pressure effect. If the data is unavailable,
enter
20 PSI.
4. Enter Flow Press Factor for your sensor.
The flow factor is the percent change in the flow rate per PSI. When entering the
value, reverse the sign.
Example:
If the flow factor is 0.000004 % per PSI, enter
−
0.000004
% per PSI.
5. Enter
Dens Press Factor
for your sensor.
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.
6. Determine how the transmitter will obtain pressure data, and perform the required
setup.
Configure process measurement
Configuration and Use Manual 73