Hi, my objective is to use multiple TMP007 sensors to measure a temperature of an arbitrary liquid which is stored in a cylinder container (r = 40mm, h = 150mm).
I thought a metal container will be suitable for my purpose.
Thanks to Ren Schackmann's reply,
Metals do not allow transmission of IR radiation to pass through. This is OK, because metals are highly thermally conductive. This means the metal bottle should be the same temperature as the liquid within. The TMP00x devices, and other types of thermal imaging devices, will measure the temperature of the metal bottle. Ideally, the metal bottle should be painted black to give it a high emissivity. A polished metal would have a very poor emissivity, and be difficult to measure.
See the IR FAQ on E2E for more information on emissivity on TMP00x.
I think this question came up because I'm confused about the relationship between object emissivity(ε) and thermal conductivity.
- "Metals do not allow transmission of IR radiation to pass through."
Although metals are highly thermally conductive,
is using metal (even it is non-polished and painted in black) as a material for this specially purposed containers a bad choice
since TMP007 receives IR and metal cannot transmit IR to the sensor?
If metal is a bad choice, is there other materials that are recommended?
