Swapping graph to positive

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hinovel
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Joined: Wed Aug 15, 2018 1:34 pm

Swapping graph to positive

Post by hinovel » Wed Aug 15, 2018 1:43 pm

Have connected a pressure transducer and this time the output is negative not positive, the setup is detailed in the pictures below.

Any advice would be brilliant.
Attachments
picolog.jpg
Set up circuit with annotation
SnipImage.JPG
The pressure sensor setup
SnipImage.JPG (12.13 KiB) Viewed 1035 times

Martyn
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Location: St. Neots

Re: Swapping graph to positive

Post by Martyn » Fri Aug 17, 2018 9:47 am

Just to confirm that you have Pin 2 of the transducer connected to both AG on the board and the ground of your supply, and Pin 3 connected to Channel 1.

Which software are you using and how is it set up ?
What readings are you getting ?
Martyn
Technical Support Manager

hinovel
Newbie
Posts: 1
Joined: Wed Aug 15, 2018 1:34 pm

Re: Swapping graph to positive

Post by hinovel » Fri Aug 17, 2018 10:26 am

Yes our setup is Pin 2 of the transducer connected to both AG on the board and the ground of your supply, and Pin 3 connected to Channel 1.
We are using Picolog 6 (v1.5) software, the results we're getting are as expected but of the opposite sign (negative voltage rather than positive!)
Thanks

Martyn
Site Admin
Site Admin
Posts: 3691
Joined: Fri Jun 10, 2011 8:15 am
Location: St. Neots

Re: Swapping graph to positive

Post by Martyn » Fri Aug 17, 2018 12:22 pm

I have tried a unit here directly connected to a power supply and everything appears correct. Can you save the data file and send it to support@picotech.com with a copy of the transducer data sheet.
Martyn
Technical Support Manager

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