🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: sci.electronics
Article #14814

Re: 0-38mV ==> 4-20mA Conversion

#14814
From: RICHARD O. WHITE
Date: Thu, 19 Nov 1992 18:18
30 lines
1643 bytes
In article <jtaylor.5.722100058@dseg.ti.com>, jtaylor@dseg.ti.com (Jeff Taylor)
writes:
>Can anyone suggest the best method (or design) to convert a 0 to 38 mV
>pressure transducer signal to a 4 to 20 mA signal that I can send down
>1000' of cable? I'm aware of the Burr Brown current transmitter devices,
>but am seeking a simple op-amp solution. The BB chips need a much larger
>voltage span as input.
>
>Thanks,
>
>Jeff :  JTAYLOR@DSEG.TI.COM
>
Try 1-800-872-9436  OMEGA technical assistance.... nice outfit
they carry exactly what you want at reasonable prices..
also ask for their books or call 800-222-2665 hotline
pressure-strain book has applications sections and product line data
I'm not assocated or a rep.... just a satisfied customer....
there are analog ckts avaible by Ti or Motorla ect if you wish to
design your own.. but why reinvent the wheel... they went through the
stability-noise-freq problems already..

second thought voltage -> freg converter might be a little better....
analog devices, intersil, might be a source .. I believe they have
datat aqua. chips with front end gain to give 1000 to 1 v-f & f-v
conversion...

1000' is a long antenna .....

hope this helps.....
-- 
Technical Details
Message-ID: <1992Nov19.181855.63992@ns1.cc.lehigh.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!wupost!ukma!cs.widener.edu!dsinc!netnews.upenn.edu!netnews.cc.lehigh.edu!ns1.cc.lehigh.edu!row0

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!wupost!ukma!cs.widener.edu!dsinc!netnews.upenn.edu!netnews.cc.lehigh.edu!ns1.cc.lehigh.edu!row0
From: row0@ns1.cc.lehigh.edu (RICHARD O. WHITE)
Newsgroups: sci.electronics
Subject: Re: 0-38mV ==> 4-20mA Conversion
Message-ID: <1992Nov19.181855.63992@ns1.cc.lehigh.edu>
Date: 19 Nov 92 18:18:55 GMT
Organization: Lehigh University
Lines: 30