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MAX6674 Thermocouple Intfc below ground

MAX6674 Thermocouple Intfc below ground

MAX6674 Thermocouple Intfc below ground

(OP)
I'd like to use the Maxim MAX6674 thermocouple interface, but, I'd like to monitor temperatures less than 32degF.

Has anyone used any tricks to run this interface 'below ground' and measure temperatures less than 0degC?

RE: MAX6674 Thermocouple Intfc below ground

You mean, aside from the fact that the digitized output doesn't output anything below 0ÂșC?

TTFN

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RE: MAX6674 Thermocouple Intfc below ground

Wrong choice of chips for sub zero operation.
The reference to -20 is the temperature limit of the chip, not the measuring temperature.
That is, the chip will not measure temperatures below 0, but the chip will accurately measure sensor temperatures down to 0 degrees when the chip is in an ambient of -20 degrees.
respectfully

RE: MAX6674 Thermocouple Intfc below ground

(OP)
Thanks waross. I thought there may be a trick.

Do you know of any TC interfacing chips for sub-zero operation? (besides AD's stuff)

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