Emerson IFT9701 instruction manual The pulse output goes to 0 Hz

Configuration with ProLink II Software continued

Table 7-1 Measurement units for mass and volume flow

Mass flow unit	Software label	Volume flow unit	Software label
grams/second	g/s	U.S. gallons/second	USgps
grams/minute	g/min	U.S. gallons/minute	USgpm
grams/hour	g/hr	U.S. gallons/hour	USgph
kilograms/second	kg/s	liters/second	l/s
kilograms/minute	kg/min	liters/minute	l/min
kilograms/hour	kg/hr	liters/hour	l/hr
kilograms/day	kg/day	Imperial gallons/second	UKgps
metric tonnes (1000 kg)/minute	t/min	Imperial gallons/minute	UKgpm
metric tonnes (1000 kg)/hour	t/hr	Imperial gallons/hour	UKgph
metric tonnes (1000 kg)/day	t/day	Imperial gallons/day	UKgpd
pounds/second	lb/s	cubic feet/second	cuft/s
pounds/minute	lb/min	cubic feet/minute	cuft/min
pounds/hour	lb/hr	cubic feet/hour	cuft/hr
pounds/day	lb/day	cubic feet/day	cuft/day
short tons (2000 pounds)/minute	ton/min	cubic meters/second	cum/s
short tons (2000 pounds)/hour	ton/hr	cubic meters/minute	cum/min
short tons (2000 pounds)/day	ton/day	cubic meters/hour	cum/hr
		cubic meters/day	cum/day
		barrels/second	bbl/s
		barrels/minute	bbl/min
		barrels/hour	bbl/hr
		barrels/day	bbl/day

4.In some sensor installations, noise caused by mechanical sources, such as valves and motors, can affect flowmeter output signals. The flow cutoff filters out noise by defining the measured value below which the milliamp output indicates zero flow.

The flow cutoff is the lowest flow rate at which the meter produces a nonzero output signal. If flow drops below the cutoff:

-The pulse output goes to 0 Hz

-The internal totalizer stops counting

-The meter indicates zero flow during polling from a host controller

A default flow cutoff is entered into the flowmeter at the factory. This number can be adjusted to achieve the filter effect described above. Enter a new value, if desired, into the Flow Cutoff text box in the Flow panel.

5.The configured flow direction (forward, reverse, or bi-directional) determines how flowmeter outputs and totalizers will react when fluid flows through the meter.

The flow direction arrow on the meter is considered the “forward” flow direction, but the meter measures flow accurately in either direction. Table 7-2 lists how outputs and totalizers are affected by the option that is chosen.

To configure flow direction for outputs and totalizers, open the Flow Direction list box in the Flow panel and select the desired setting.

48 Model IFT9701 Transmitter Instruction Manual