How can I find the frequency of a signal from a turbine flowmeter?

My turbine flow meters output a voltage signal frequency. Is there are way that I can find the frequency in LabVIEW? Right now I have the flow meters wired to my card as analog inputs. Maybe I need to wire them in differently.

Dear moebeth,
To address your question, can you include more information about the flow meters? As far as I know, turbine flow meters can have outputs of analog voltage, analog current, frequency/pulse, or switch.
If the meters are outputting a voltage, then connect it as an analog voltage input and use the analog voltage virtual channel.
If the meters are outputting a frequency or pulse, connect it as a counter input. With the counter input, you would need to program in LabVIEW without using a virtual channel. Instead, you would use the counter VIs. There are shipping examples included with LabVIEW. Measure Frequency (DAQ-STC).vi can be used just by pressing Run if you wire the signal into the source of whichever counter you want to use and th
e ground into DGND.
Let me know if you have any further questions or if this does not resolve your issue.
Thanks again and have a great day!
Chad AE
Applications Engineer - National Instruments
Attachments:
Frequency.zip ‏45 KB

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