Emerson Model 1700 用户手册
Effect of Flow Direction on mA outputs
Flow Direction
affects how the transmitter reports flow values via the mA outputs. The mA
outputs are affected by Flow Direction only if mA Output Process Variable is set to a flow
variable.
variable.
Flow Direction
and mA outputs
The effect of Flow Direction on the mA outputs depend on Lower Range Value configured for
the mA output:
the mA output:
•
If Lower Range Value is set to 0, see
.
•
If Lower Range Value is set to a negative value, see
.
Effect of Flow Direction on the mA output: Lower Range Value = 0
Figure 4-1:
Flow Direction = Forward
mA output
-x
0
x
Reverse flow
Forward flow
20
12
4
Flow Direction = Reverse, Negate Forward
mA output
-x
0
x
Reverse flow
Forward flow
20
12
4
Flow Direction = Absolute Value, Bidirectional,
Negate Bidirectional
Negate Bidirectional
mA output
-x
0
x
Reverse flow
Forward flow
20
12
4
•
Lower Range Value
= 0
•
Upper Range Value
= x
Configure process measurement
40
Micro Motion
®
Model 1700 Transmitters with Analog Outputs