ABB Sensyflow FMT200-ECO2 Operating Instructions Manual page 23

Sensyflow FMT200-ECO2 THERMAL MASS FLOWMETER | OI/FMT200-ECO2-EN REV. H
Digital output
Configuration of the digital output.
'Standard Frequency' option
Figure 17: Standard Frequency output
In the 'Standard Frequency' operating mode, you can switch
between two frequency ranges 1 to 100 Hz or 10 to 1000 Hz.
The lower frequency corresponds to a flow rate of 0 %, while the
upper frequency corresponds to a flow rate of 100 % of the set
upper range value.
'Variable Frequency' option
Figure 18: Variable Frequency output
In the 'Variable Frequency' operating mode, you can enter any
lower and upper frequency.
The lower frequency corresponds to a flow rate of 0 %, while the
upper frequency corresponds to a flow rate of 100 % of the set
upper range value.
Parameter Description
min Enter the frequency for 0 % flow rate
max Enter the frequency for 100 % flow rate, maximum
2500 Hz
'Impulse output' option
Figure 19: Impulse output
The current measured value is output in impulses/unit on the
digital output.
Parameter Description
Value Enter the flow rate per impulse.
Duration Set the impulse length.
Polarity Select polarity (low/high) for the impulse.
'Switch output' option
Figure 20: Switch output
The current measured value is monitored for fluctuation either
side of an adjustable limit value.
The polarity gives the condition of the signal within the set
limits.
Parameter Description
Lower threshold Enter the lower limit value.
Upper threshold Enter the upper limit value.
Polarity Select polarity (low/high).
'No output' option
Deactivates the digital output.
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