Configuring The Flow Direction Parameter - Emerson Micro Motion 1000 Series Configuration And Use Manual

Optional Configuration
8.10

Configuring the flow direction parameter

• Model 1500 AN
• Model 1700 AN
• Model 1700 IS
• Model 2500 CIO
• Model 2700 AN
• Model 2700 IS
• Model 2700 CIO
Options for flow direction include:
• Forward
• Reverse
• Absolute Value
• Bidirectional
• Negate Forward
• Negate Bidirectional
For the effect of flow direction on mA outputs:
• See Figure 8-1 if the 4 mA value of the mA output is set to 0.
• See Figure 8-2 if the 4 mA value of the mA output is set to a negative value.
For a discussion of these figures, see the examples following the figures.
For the effect of flow direction on frequency outputs, totalizers, and flow values reported via digital
communication, see Table 8-6.
Figure 8-1 Effect of flow direction on mA outputs: 4mA value = 0
20
12
4
-x 0
Reverse
(1)
flow
Zero flow
Flow direction parameter:
• Forward
mA output configuration:
• 20 mA value = x
• 4 mA value = 0
To set the 4 mA and 20 mA values, see
Section .
76
The flow direction parameter controls how the transmitter reports flow rate and how
flow is added to or subtracted from the totalizers, under conditions of forward flow,
reverse flow, or zero flow.
• Forward (positive) flow moves in the direction of the arrow on the sensor.
• Reverse (negative) flow moves in the direction opposite of the arrow on the
sensor.
20
12
4
x
Forward Reverse
(2) (1)
flow flow
Flow direction parameter:
• Reverse
• Negate Forward
(1) Process fluid flowing in opposite direction from flow direction arrow on sensor.
(2) Process fluid flowing in same direction as flow direction arrow on sensor.
-x 0 x
Forward
(2)
flow
Zero flow
Micro Motion Series 1000 and Series 2000 Transmitters
20
12
4
-x 0 x
Reverse Forward
(1)
flow flow
Zero flow
Flow direction parameter:
• Absolute value
• Bidirectional
• Negate Bidirectional
(2)