RE: [PSUBS-MAILIST] Life Support Revisited

["Alec Smyth" <Asmyth@changepoint.com>]

Phil,

On TI's catalog I found the following:

"Sensors & Controls gas sensors are presently comprised of two families
of CO2 sensors: The 4GS -- typically in indoor air quality applications
for measuring concentrations up to 5000 parts per million -- and the 9GS
for up to 25% CO2 typically for industrial incubators and food storage
and processing."

This would lead me to think 4GS is it. However, I also found the
standard 4GS has 0-10V output, while the standard 9GS has 0-5V output.
So my initial selection of the 4GS model conflicts with your remark that
it has 0-5V output. D'you know which of these two it might be? You might
also be using a 4GS with custom output. 

http://www.ti.com/snc/products/sensors/gas-4gs.htm

http://www.ti.com/snc/products/sensors/gas-9gs.htm


thanks!

Alec


-----Original Message-----
From: Phil Nuytten [mailto:72020.572@compuserve.com] 
Sent: Wednesday, August 06, 2003 1:11 AM
To: INTERNET:personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Life Support Revisited

Hi, Alec!
        The CO2 sensor you want is made by Texas Instruments . .
operates
at 0-5V . . .costs about 500 bucks, sensor only. You can route it
directly
to the PLC - Check out TI's on-line catalog and if you can't find the
unit
you want, get back to me and I'll get the part number from one of the
techs.
Phil Nuytten