Cole-Parme​r DAQ with ABB Aquamaster​-S Flow Meter
I have a Cole-Parmer 18200-00 DAQ that I'm using to measure the flow rate using an ABB Aquamaster S. The flow meter sends out a pulse that is equivalent to the flow rate in the system. I'm having some trouble writing a program that would give me an accurate flow measurement. I tried converting the pulse into a voltage by using a resistor connected into the analog port but instead of getting a fixed or approximate number for the flow rate I get a range of flows. I'm guessing I should connect the flow meter to a counter port but I don't know how ?
I might even be on the wrong track to beging with. Please Help ??
I'm attaching the current program I have writtent and the flow settings on the flow meter.
Attachments:
Flow Meter.vi 86 KB
Flow Program.docx 14 KB
Unless I am confused by your text document, you can simply count pulses.
One pulse means that the pinwheel rotated one time.
They have calibrated one revolution to mean that 1/20th of a Liter has passed.
Therefore, your volume will be:
V = (# pulses) * 1/20
And your flow rate would be:
Q = V / (t2 - t1)
where t is time in whatever units you want.
Cory K
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