Dear Azman,

Commercially there are number of sensors motes available which have the features of interfacing additional sensors in the same mote. You can customized that one with your desired one. you can additionally add sensors for temperature, humidity, gas sensors and etc. However, before do such customization you should research on which mote is economic for your application. I am mentioning some motes name which has the features of the very same . (TeleosB, CrossBow, MicaZ)

Thanks for your answer. My operating temperature is below than 650 deg c, aluminum pipe. Based on your exp, which one is more suitable and practical? 

Well , i have not applied sensor motes to capture temperature for such higher temperature domain.  You should go through the commercial websites and there you will find their range. If the temperature monitoring ranges seems not suitable for your application then you can drop a mail and may quote for the customization. what i have mentioned in the last answer is widely used sensor motes, not only in academics but also in commercial places.

The sensor motes that Alok mentions will be limited to temperatures below about 85 deg C. Even military electronics do not work above 105 dec C. Check the data sheets for the motes to find their operation range.

at my knowledge, there are no sensors embedded on a WSN that allow you to do such task, on the other hand you could add sensors to data adquisition boards in your WSN, the kind of sensors you will need to add are termocouples  and straing gauges

Thanks all for your respond, very2 much appreciated. I read one article, they did theirs wirelessly to measure this kind of temperature (max 650 deg c). But my problem is, instead of attaching the sensors to the rotating tool (embedded), is there any sensors that can be attached to the rotating pipe and do the measurement wirelessly? Thanks. 

It's not easy, but you can use neutron or synchrotron X-ray diffraction to measure lattice strain in in-situ high temperature experiments such as the one you're describing. See for instance:

Woo et al., In situ neutron diffraction measurement of transient temperature and stress fields in a thin plate, Applied Physics Letters, 88, 261903,(2006)

Stroboscopic measurements are also possible:

Baimpas et al., A feasibility study of dynamic stress analysis inside a running internal combustion engine using synchrotron X-ray beams, Journal of Synchrotron Radiation, 20, pp. 316-323, (2013)

Thanks Doc, i will try to surf thru the info.