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Topic: Platinum resistance sensor RTD (Read 2228 times) previous topic - next topic

Boardburner2

I am considering building a platinum resistance thermometer, the probes are very expensive though.
There are some very affordable ones but they come with short tails.
Any idea how to connect to these ?
Solder would melt at service temp.

dc42

What temperature range do you want to measure? A thermocouple may be an easier option.
Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

Boardburner2

I have another thread discussing the thermocouple.
Range is as high as I can get, it's to get more confidence in the thermocouple readings.

dc42

Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

Boardburner2

Thanks looks just the job.
Only twice the price of the platinum sensor ????

CrossRoads

MAX31865
http://www.maximintegrated.com/datasheet/index.mvp/id/7900/t/al
SPI back to the Arduino.
http://www.digikey.com/product-detail/en/MAX31865ATP%2B/MAX31865ATP%2B-ND/3681476
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

dc42


Thanks looks just the job.
Only twice the price of the platinum sensor ????


I just found some cheaper solutions by searching for "ceramic terminal block" on eBay.
Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

Boardburner2

Many thanks , looks just the job, anyone know of a uk supplier for that chip please?

Docedison

Remember the HP Test equipment that used the ceramic terminal blocks?... I still have an HP 5" 5 MHz scope with those things in it...

Doc
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
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Boardburner2

Thanks for the replies, I have now found a supplier, however the package is very small and will probably be beyond the resolution of my printer and soldering ability.
Can anyone suggest a solution?

I know that adapter boards are sometimes to be found to other footprints, however please do not suggest eBay unless it someone you have personally dealt with and are happy with.

Fwiw I had a board for an Amtel project last year which i suspect had been immersion tinned,it was totally unsolderable,probably  because it had been stored too long, it cost me dear in lost components.

CrossRoads

Look at dipmicro.com, they have a bunch of SMD adapters. I have a little stockpile of different sizes waiting to go into some project.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Boardburner2

Thanks,
Spot on.
1/3 price of RS, and I noticed not tinned which is exactly what I want.

CrossRoads

RS? Radio Shack, or something else?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Boardburner2

RS components, Used to be Radio Spares I think.
V expensive.

Equivalent to Radio Shack over here would be Maplins.

dc42


RS components, Used to be Radio Spares I think.
V expensive.

Equivalent to Radio Shack over here would be Maplins.


Actually, prices at RS Components are generally not that bad. SMD adapters are an exception, because the only ones that RS (and Farnell) stock are the ridiculously expensive Roth Electronik ones. I get my SMD adapters from SparkFun distributors, Futurelec etc.
Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

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