This discussion focuses on measuring gas temperature using infrared technology, specifically in a glass enclosure. Participants clarify that infrared non-contact thermometers can measure surface temperatures but may not be effective for low-density gases like hydrogen, which neither absorbs nor emits infrared radiation. Safety concerns regarding the use of infrared lasers are also highlighted, particularly regarding eye safety and the need for IR transparency in the enclosure's window. Ultimately, the feasibility of using infrared lasers for this application is questioned due to the properties of hydrogen gas.
PREREQUISITESResearchers, experimental physicists, and engineers interested in gas temperature measurement techniques, particularly those working with low-density gases and infrared technology.
lonewolf219 said:I am thinking about a possible experiment, and would like to measure the temperature of gas in various places inside of a glass enclosure. Is it possible to use an infrared laser to this? Thanks
IR thermometers detect infrared radiation, IR lasers emit infrared radiation.lonewolf219 said:Thanks for the replies, sorry I am a little late here... I am curious about testing hydrogen gas. I was thinking about the infra red non contact thermometers, yes, you are right Zapper Z. But I think those can only be measured on a surface, is that correct? If I used a real IR laser, could it read a certain point and a certain depth inside the glass? I am thinking about a low density gas.