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Little maths help

Created by: thedodgy1 at: 3/20/2020 6:02 PM (4 Replies)

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3/20/2020 6:02 PM	Rate (0)
thedodgy1 Experienced Member Joined: 11/11/2017 Last visit: 1/19/2021 Posts: 99 Rating: (3)	i hope someone can help me out here because i am loosing all my hair! i want to input a pressure value of say -10Pa and give a voltage out, the range of the pressure will -124Pa to 124Pa and the voltage output will 0-10v the voltage is being inputed into a VFD and its not reading the pressure, i am telling it the pressure what it needs to achieve if that makes sense but i can not work out the maths to convert it. thanks

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3/20/2020 6:15 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 1/22/2021 Posts: 20961 Rating: (2307)	Where come the -10 Pa from? From Display of the LOGO!? Or from HMI? Or a sensor?

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3/20/2020 6:35 PM	Rate (0)
thedodgy1 Experienced Member Joined: 11/11/2017 Last visit: 1/19/2021 Posts: 99 Rating: (3)	from the TDE

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3/20/2020 6:37 PM	Rate (1)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 1/22/2021 Posts: 20961 Rating: (2307)	Here's a simple example. If you want a limiting for the input then wrote it. Attachment Converting_pressure_to_voltage_0BA8.Standard.zip (22 Downloads)

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3/20/2020 6:43 PM	Rate (0)
thedodgy1 Experienced Member Joined: 11/11/2017 Last visit: 1/19/2021 Posts: 99 Rating: (3)	THANKS a lot!!! i knew i had to divide by 248 but i just could not figure out the rest.. cheers your a star

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This contribution was helpful to 1 thankful Users ixo65