hi,i am talking about Thermocouples.
Devices like those are OK but they have a few draw backs I think for the OP's application. They are designed mostly with an embedded sensor, so the device itself is the temperature measuring plane. Popular in power supplies and computer motherboards as well as countless other applications. They are designed to send their data over a SMBus (System Management Bus). Maybe a uC could read a bunch of them and send the data but I don't know. However, something to consider if it will work for the application.
i am interested in Wireless sensor network. i am making a hardware for it.
due to cost and temperature range, i want to use thermocouple.
temperature range is 0-100 C.
then i have to digitized the output of thermocouple.
i am using 8 bit ADC.
i want to use full scale of ADC output voltage.
for 0 C, ADC output should be 00H.
and for 100 C, it should be FFH.
Good choice. Omega makes some good low cost RTDs. RTD_GEN_SPECS_REF - RTD Tech Referencehi,
For such a low maximum of 100Cdeg I would consider using an RTD. [Resistance Tempr Detector]
Typically you would get a change for 100R to 200R for a 266Cdeg change.
Best straight line linearity of about +/-1.3Cdeg.