[SS2S-Main] Re: temperature measurement

  • From: "Nev Blyth" <nev.blyth@xxxxxxxxx>
  • To: sugarshot@xxxxxxxxxxxxx
  • Date: Mon, 24 Mar 2014 15:44:05 -0700 (PDT)

Richard and team.


Have a look at this SPI type K thermocouple module:




http://www.ebay.com.au/itm/SPI-MAX6675-Module-Thermocouple-K-Temp-sensor-Arduino-Raspberry-/271321787079?pt=LH_DefaultDomain_0&hash=item3f2c09eac7




Might be a simple way to approach using an Ardiuino or similar.




Nev B

Canberra, Australia
—
Nev Blyth
VK1HNB
0407 923 182

On Tue, Mar 25, 2014 at 1:32 AM, Richard Nakka <richard.rocketry@xxxxxxxxx>
wrote:

> For an upcoming motor test, we would like to use thermocouples
> (k-type?) to measure motor casing and nozzle temperatures.
> We would like to use an 8-channel DATAQ unit for the data acquisition.
> We understand there are challenges to this due to small voltage
> signal, non-linear temperature-voltage relationship and the need (?)
> for a reference junction compensation.
> Question to list members: Can anyone give advice on how to do this?
> What kind of amp would we need? Could anyone be of assistance in
> designing/building such?
> thanks in advance
> Richard

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