a) x base units = y special units
b)
Mass Flow Conversion Factor
= x ÷ y
4. Enter
Mass Flow Conversion Factor
.
The original mass flow rate value is divided by this value.
5. Set
Mass Flow Label
to the name you want to use for the mass flow unit.
6. Set
Mass Total Label
to the name you want to use for the mass total and mass inventory unit.
The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.
Defining a special measurement unit for mass flow
You want to measure mass flow in ounces per second (oz/sec).
1. Set
Base Mass Unit
to Pounds (lb).
2. Set
Base Time Unit
to Seconds (sec).
3. Calculate
Mass Flow Conversion Factor
:
a. 1 lb/sec = 16 oz/sec
b.
Mass Flow Conversion Factor
= 1 ÷ 16 = 0.0625
4. Set
Mass Flow Conversion Factor
to
0.0625
.
5. Set
Mass Flow Label
to
oz/sec
.
6. Set
Mass Total Label
to
oz
.
4.2.2 Configure Flow Damping
Display
Menu
>
Configuration
>
Process Measurement
>
Flow Variables
>
Flow Damping
ProLink III
Device Tools
>
Configuration
>
Process Measurement
>
Flow
>
Flow Rate Damping
Field Communicator
Configure
>
Manual Setup
>
Measurements
>
Flow
>
Flow Damping
Flow Damping
controls the amount of damping that will be applied to the measured mass flow rate. It affects
flow rate process variables that are based on the measured mass flow rate. This includes volume flow rate and
gas standard volume flow rate.
Flow Damping
also affects specialized flow rate variables such as temperature-corrected volume flow rate
(API referral) and net mass flow rate (concentration measurement). It is not applied to the flow rate received
via the frequency input.
Damping is used to smooth out small, rapid fluctuations in process measurement. The damping value
specifies the time period, in seconds, over which the transmitter will spread changes in the process variable.
At the end of the interval, the internal value of the process variable (the damped value) will reflect 63% of the
change in the actual measured value.
Procedure
Set
Flow Damping
to the value you want to use.
Configure process measurement
Configuration and Use Manual
March 2019
MMI-20025166
34
Micro Motion Model 5700 Transmitters with Configurable Outputs