Re: [PSUBS-MAILIST] Life Support Revisited

["Brian Cox" <ojaibees@ojai.net>]

Thanks everybody on this thread ! great info!  I will definitely need it in a couple of years!  

Brian Cox
----- Original Message ----- 
From: "Alec Smyth" <Asmyth@changepoint.com>
To: <personal_submersibles@psubs.org>
Sent: Wednesday, August 06, 2003 6:35 AM
Subject: RE: [PSUBS-MAILIST] Life Support Revisited


> 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
>