Emerson Micro Motion 5700 Configuration And Use Manual page 169

Configuration and Use Manual
MMI-20029769
14.4.3 Set up pressure compensation using a web browser
Procedure
1. Choose Configuration > Process Measurement > Pressure.
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
the sign.
Example
If the density factor is 0.000006 g/cm
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. Set Flow Calibration Pressure to the pressure at which your sensor was calibrated.
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.
6. Choose the method you will use to supply pressure data, and perform the required setup.
Option Description
Digital A host writes pressure data to
communications the meter at appropriate
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.
Configuration and Use Manual
3
/PSI. When entering the value, reverse
3
/PSI, enter −0.000006 g/cm3/PSI.
Setup
a. Set Pressure Source to Fixed Value or Digital
Communications.
b. Perform the necessary host programming and
communications setup to write pressure data to the meter
at appropriate intervals.
Measurement support
March 2019
169