Radiation heat loss detector

A radiation heat loss detector assembly for providing an indication of the heat loss from an extended surface area comprising:

• a camera for providing a visual image of said surface area on photographic film;
• a thermal radiation sensor having a wide field of view of at least about 20.degree. at any instant substantially matching the field of view of a designated area of the image on the film, the radiation sensor having a wide band response;
• means for sensing wide band, wide field-of-view radiation from the environment incident on the surface area and an electrical circuit for compensating a radiation signal for said surface area with the radiation signal for the environment to provide a radiation heat loss signal;
• display means for providing an illuminated display indicative of the radiation heat loss from said surface area;
• and
• means for providing a visual image of the display with the image of the surface area on the photographic film.

A radiation heat loss detector assembly for providing an indication of the heat loss from an extended surface area comprising:

• a camera for providing a visual image of said surface area on photographic film;
• a thermal radiation sensor having a field of view of about 40.degree. at any instant substantially matching the field of view of a designated area of the image on the film, the radiation sensor having a wide band response;
• means for detecting the distance between the radiation sensor and said surface area;
• means for determining radiation losses from said surface area based on the sensed radiation and the detected distance;
• means for sensing radiation from the environment incident on said surface area and an electrical circuit for compensating a radiation loss signal for said surface area with the radiation signal for the environment;
• a real time clock;
• display means responsive to the environment compensated radiation loss signal and the real time clock for providing an illuminated display indicative of the radiation heat loss from said surface area and of the date and time of the measurement;
• and
• means for providing a visual image of the display with the image of the surface area on the photographic film.

A method of detecting the radiation heat loss from an extended surface area comprising:

• photographing the extended surface area to provide a visual image on a photographic film;
• simultaneously sensing the radiation from the surface area by means of a sensing element positioned closely adjacent to the objective of the camera and having a wide field of view of at least about 20.degree. at any instant substantially matching the field of view of a designated area of the photographic image;
• and
• providing an indication of the sensed radiation on the photographic film.

A radiation heat loss detector assembly for providing an indication of the heat loss from an extended surface area comprising:

• a wide band, wide field of view thermal radiation sensor for sensing radiation in a field of view of at least about 20.degree. at any instant;
• means for sensing wide band, wide field-of-view radiation from the environment incident on said surface area and an electrical circuit for compensating a radiation signal for said surface area with the radiation signal for the environment to provide a radiation heat loss signal;
• and
• electrically responsive display means for providing a display indicative of the radiation heat loss from said surface area.

A radiation heat loss detector assembly for providing an indication of the heat loss from an extended surface area comprising:

• a camera for providing a visual image of said surface area on photographic film;
• a thermal radiation sensor having a field of view of at least about 20.degree. at any instant substantially matching the field of view of a designated area of the image on the film, the radiation sensor having a wide band response;
• sonar means for detecting the distance between the radiation sensor and said surface area;
• a real time clock;
• display means responsive to the output of the radiation detector, the sonar means and the real time clock for providing an illuminated display indicative of the radiation heat loss from said extended surface area, of the distance between the surface area and the assembly during measurement and of the time of the measurement;
• and
• means for providing a visual image of the display with the image of the surface area on the photographic film.