Heating drying type infrared radiation moisture meter

摘要

A heating drying type moisture meter is provided which detects the temperature of a sample on a sample plate 4 with an infrared (IR) radiation thermometer 10. The IR thermometer 10 is covered with an heat insulating material and comprises a light receiving portion 24 provided with a clear protection cover. The IR thermometer 10 is preferably positioned above and laterally offset from the sample plate 4. The moisture meter also comprises a heating reference element 17 disposed inside or on the sample plate 4. In a second embodiment the IR thermometer may be positioned outside the moisture meter wind screen 6, receiving light from the sample via a clear plate (8 fig 6) and mirror (29 fig 6) disposed above the sample plate 4.