Chapter 7 Display Functions
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7.2. Pulse/Frequency/Current Output
7.2.1. Pulse equivalent output
It is mainly used for sensor manufacturer coefficient calibration and
user measurement use. In the third way configuration parameter Settings:
Pulse equivalent corresponding accumulate indicate each pulse corresponding to
the relevant volume number.
For example:
Parameter setting as 0.1L/p
The current real-time flow 3.6m
3
/h
Number of pulses per second output is : 3.6×1000/3600/0.1 = 10
Notes:
When the parameter is set to 0.4L/p
The current real-time flow is 3.6m
3
/h
Number of pulses per second output is: 3.6×1000/3600/0.4 = 2.5
If encounter the above situation, the decimal part of 2.5 pulses will automatically
get into the next second output, data loss will not happen.
The pulse equivalent shouldn’t be set too small when the pipe flow is
small, otherwise it will cause pulse output exceeds the limit, then the main
screen will appear Pls system alarm information. Users need to reset pulse
equivalent parameters. Similarly, when the pipe flow is small the selected pulse
equivalent cannot too big; otherwise it will cause the instrument to
output a pulse for a long time, and further cause measurement error.
Pulse equivalent output is different from frequency output; pulse output
will output a pulse when a pulse equivalent is accumulated enough, so the pulse
output is uneven. Counter instrument should be used when measuring
pulse output. Frequency meter instrument shouldn’t be used.
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