6 Configure advanced options for process
measurement
6.1 Configure Response Time
Display Menu → Configuration → Process Measurement → Response Time
ProLink III Device Tools → Configuration → Process Measurement → Response Time
Field communicator Not available
Response Time controls the speed of various internal processes that are involved in retrieving electronic data
from the sensor and converting it to process data.
Response Time affects all process and diagnostic variables.
Procedure
Set Response Time as desired.
Option
Description
Normal Appropriate for typical applications.
High Filtering Slower response. Appropriate for applications with significant amount of entrained gas or
process noise.
Low Filtering Fastest response. Appropriate for proving or filling applications.
6.2 Detect and report two-phase flow
Two-phase flow (gas in a liquid process or liquid in a gas process) can cause a variety of process control issues.
The transmitter provides two methods to detect and report or respond to two-phase flow.
6.2.1 Detect two-phase flow using density
Display
Menu → Configuration → Process Measurement → Density
ProLink III Device Tools → Configuration → Process Measurement → Density → Expand Two-Phase Flow
Field communicator Device Settings → Process Configuration → Two-Phase Flow
The transmitter can use line density data to detect two-phase flow (gas in a liquid process or liquid in a gas
process). The density limits are user-specified. When two-phase flow is detected, an alert is posted.
Procedure
1. Set Two-Phase Flow Low Limit to the lowest density value that is considered normal in your process.
Values below this will cause the transmitter to post a Process Aberration alert. If no two-phase flow is
expected, leave this value at 0.
Tip
Gas entrainment can cause your process density to drop temporarily. To reduce the occurrence of
two-phase flow alerts that are not significant to your process, set Two-Phase Flow Low Limit slightly
below your expected lowest process density.
Configuration and Use Manual Configure advanced options for process measurement
MS-00809-0200-1600 May2024
Configuration and Use Manual 71
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