Method and device for monitoring the condition of a medium

• Main Authors: LOBERG KARI, RINKIOE MARCUS, KORPPI-TOMMOLA JOUKO, VANHANEN JARMO, TOERMAE PAEIVI, ELFSTROEM JUKKA
• Format: Patent
• Language: Chinese; English
• Published: 09.05.2012
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a method for monitoring the condition of a medium (50), based on the transmission/emission of light in a channel (33), in which - a light is conducted through a medium layer defined by a measuring gap (13.1) in a measuring head (12) pushed in from an opening (31) in the wall (30) of the channel (33), - the intensity of the light, or a variable proportional to it is measured through the medium layer, and - the condition of the medium is evaluated, using measuring electronics (15), from the intensity of the change, according to set criteria. The measurement is performedusing a sensor (10) with a compact measuring head, in which the measuring electronics (15) are essentially outside the channel (33), and in which the light is conducted to the measuring gap and away from the measuring gap by optical-fibre means (18, 18.1, 18.2). In addition, the invention also relates to a corresponding device (10).