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water pulse to water flowrate

Created by: Andy Moods at: 6/12/2014 3:08 PM (3 Replies)

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6/12/2014 3:08 PM	Rate (0)
Andy Moods Posts: 33 Rating: (0)	Hi All i am wondering what is the best approach to use to convert a water pulse to a water flowrate. it is not high speed like encoder. this pulse comes through every so often and I would need to convert it to m3/ hr. the pulse probably represents 1L in terms of volume. Any ideas?
Andy Moods Posts: 33 Rating: (0)
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6/12/2014 4:01 PM	Rate (0)
Kelu Posts: 88 Rating: (12)	Hello, you can first use a positive signal edge of your pulse signal to add it in a int counter. After each 1s (use CPU clock pulse), copy your counter in a other value and reset your counter. Then you have a value in L/s and you can convert it in m3/hr. Is it what you expect? Best regards,
Kelu Posts: 88 Rating: (12)
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6/12/2014 4:46 PM	Rate (0)
Andy Moods Posts: 33 Rating: (0)	Yes, it will work if there are more than one pulse within a second. in this case, distance between pulses can be bigger than 5 seconds
Andy Moods Posts: 33 Rating: (0)
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6/12/2014 5:13 PM	Rate (0)
Kelu Posts: 88 Rating: (12)	My idea is to calculate the time between each pulse. After we can say for example 2L in 5s => 0.4L/s and doing that continuously... Is it a good way?
Kelu Posts: 88 Rating: (12)
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