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46 Micro Motion
®
Series 3000 MVD Transmitters and Controllers
Configuring Inputs
Table 7-3 Effect of flow direction on frequency outputs, discrete outputs, totalizers, and
digital communications
Flow direction value
Forward flow
(1)
(1) Process fluid flowing in same direction as flow direction arrow on sensor.
Frequency
outputs Discrete outputs
(2)
(2) Applies only if the discrete output has been configured to indicate flow direction. See Section 8.3.2.
Flow totals
Flow values via
digital comm.
Forward only Increase OFF Increase Positive
Reverse only 0 Hz OFF No change Positive
Bidirectional Increase OFF Increase Positive
Absolute value Increase OFF Increase Positive
(3)
(3) Refer to the digital communications status bits for an indication of whether flow is positive or negative.
Negate/Forward only Zero
(3)
ON No change Negative
Negate/Bidirectional Increase ON Decrease Negative
Flow direction value
Zero flow
Frequency
output Discrete outputs Flow totals
Flow values via
digital comm.
All 0 Hz OFF No change 0
Flow direction value
Reverse flow
(4)
(4) Process fluid flowing in opposite direction from flow direction arrow on sensor.
Frequency
outputs Flow totals
Flow values via
digital comm.
Forward only 0 Hz ON No change Negative
Reverse only Increase ON Increase Negative
Bidirectional Increase ON Decrease Negative
Absolute value Increase OFF Increase Positive
(3)
Negate/Forward only Increase OFF Increase Positive
Negate/Bidirectional Increase OFF Increase Positive
Table 7-4 Mass flow units
Unit Software label
Grams per second g/s
Grams per minute g/min
Grams per hour g/hr
Kilograms per second kg/s
Kilograms per minute kg/min
Kilograms per hour kg/hr
Kilograms per day kg/day
Metric tons (1000 kg) per minute t/min
Metric tons (1000 kg) per hour t/hr
Metric tons (1000 kg) per day t/day
Pounds per second lb/s