How to convert square waves to a physical data

Hi all,
I have omega ftb-1302 flowmeter sensor which gives a square wave as output.I wired it to DAQ.When i plug in the power supply i saw this image
When i open the valve it doesn not fluctuate.What am i supposed to do?
Attachments:
flowmeter.pdf ‏288 KB
flowmeter.vi ‏52 KB

It is hard to say because the terminology is not precise.
Does the power supply have a ground connection or just + and - outputs? Something needs to connect between the power supply and the DAQ system ground. Analog Input - may not be the same as ground. Some small current must flow from the signal output line through the DAQ input to DAQ ground to sensor ground to power supply. If you do not define that path by correct wiring, errors or damge to equipment can result.
What DAQ device are you using? What power supply?
Lynn

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Solved!
Go to Solution.

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Dear All,
I am new to powershell script, i was trying to store a Ad user password set date to a variable add, add a number of days to get the expire date.
but when i try to convert the variable to date value, I am getting the error as below.
Please help me......
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PS C:\script> $a = [datetime]::ParseExact($passwordSetDate,"MM/dd/yyyy HH:MM:SS", $null)
Cannot find an overload for "ParseExact" and the argument count: "3".
At line:1 char:1
+ $a = [datetime]::ParseExact($passwordSetDate,"MM/dd/yyyy HH:MM:SS", $null)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodException
+ FullyQualifiedErrorId : MethodCountCouldNotFindBest
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¯\_(ツ)_/¯

I have transefer function like (1/(s^2+s+5)) and i have a square wave input , i want to use this transfer function with this input to see the output , how can i do that , with example please.

i need to know also how to represent this transfer function in labview, try to send me example. answer me at my mail

"st" wrote:
> answer me at my mail
give a valid e-mail first, and your name, we don't like to help anonymous
people
> try to send me example.
how much do you pay ?
> i have transefer function like (1/(s^2+s+5)) and i have a square wave
> input , i want to use this transfer function with this input to see
> the output , how can i do that
First you have to know what you are doing, like an engineer : you have a
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systems easily...
If you definitely want to use LabView, the first step is to discretize your
continuous-time transfer function, i.e. decide a sampling rate and convert
it to a "z transfor
m". Then you can directly use the "IIR Filter.vi" as I
said earlier.
Philippe Guglielmetti - www.dynabits.com me at my mail

How to convert square waves to a physical data

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