•
Under conditions of forward flow, for flow rates between 0 and +100 g/sec, the mA Output varies between
12 mA and 20 mA in proportion to (the absolute value of) the flow rate.
•
Under conditions of forward flow, if (the absolute value of) the flow rate equals or exceeds 100 g/sec, the
mA Output is proportional to the flow rate up to 20.5 mA, and will be level at 20.5 mA at higher flow rates.
•
Under conditions of reverse flow, for flow rates between 0 and
−
100 g/sec, the mA Output varies between
4 mA and 12 mA in inverse proportion to the absolute value of the flow rate.
•
Under conditions of reverse flow, if the absolute value of the flow rate equals or exceeds 100 g/sec, the mA
Output is inversely proportional to the flow rate down to 3.8 mA, and will be level at 3.8 mA at higher
absolute values.
8.2.4 Configure mA Output Cutoff
Display
Menu
>
Configuration
>
Inputs/Outputs
>
Channel
x
>
I/O Settings
>
MAO Cutoff
ProLink III
Device Tools
>
Configuration
>
I/O
>
Outputs
>
mA Output
x
>
Flow Rate Cutoff
Field Communicator
Configure
>
Manual Setup
>
Inputs/Outputs
>
Channel
x
>
mA Output
x
>
mA Output
x
Settings
>
mAO
Flow Rate Cutoff
mA Output Cutoff
specifies the lowest flow rate that will be reported through the mA Output. All flow rates
below the specified value are reported as 0.
mA Output Cutoff
is applicable only when
mA Output Source
is set to a flow rate variable. It is applied to all
flow rate variables: mass flow rate, liquid volume flow rate, gas standard volume flow rate, and so on.
Procedure
Set
mA Output Cutoff
as desired.
Set
mA Output Cutoff
in the measurement units used for the process variable. If you change the
measurement unit,
mA Output Cutoff
is adjusted automatically.
•
Default: 0
•
Range: 0 or any positive value
Tip
For most applications the default value of
mA Output Cutoff
should be used. Contact customer service
before changing
mA Output Cutoff
.
Interaction between mA Output Cutoff and process variable cutoffs
When
mA Output Process Variable
is set to a flow variable (for example, mass flow rate or volume flow rate),
mA Output Cutoff
interacts with
Mass Flow Cutoff
or
Volume Flow Cutoff
. The transmitter puts the cutoff
into effect at the highest flow rate at which a cutoff is applicable.
8.2.5 Configure mA Output Damping
Display
Menu
>
Configuration
>
Inputs/Outputs
>
Channel
x
>
I/O Settings
>
MAO Damping
ProLink III
Device Tools
>
Configuration
>
I/O
>
Outputs
>
mA Output
x
>
Added Damping
Field Communicator
Configure
>
Manual Setup
>
Inputs/Outputs
>
Channel
x
>
mA Output
x
>
mA Output
x
Settings
>
Added
Damping
Integrate the meter with the control system
Configuration and Use Manual
April 2019
MMI-20048166
100
Micro Motion 4200 Transmitters