Abstract

a) of the housing (5). Each sensor (3) is connected to a data bus (9) for providing information of the measured temperature to other systems and/or apparatuses. The sensors (3) are attached to a support structure (19) having at least one rotatable shaft (23) in the interior of the housing (7), and wherein the shaft (23) is arranged to rotate the support structure (19) such that the sensors (3) are displaced to a calibration and/or protection position away from the openings (11) for calibration and/or protection of the sensors (3). The invention also relates to a method for measuring the temperature of a web, a computer program, a computer readable medium and a control unit.

IPC Classes  ?

• G01J 5/04 - Casings
• D21F 5/06 - Regulating temperature
• D21F 7/00 - Other details of machines for making continuous webs of paper
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
• G01J 5/06 - Arrangements for eliminating effects of disturbing radiationArrangements for compensating changes in sensitivity
• D21G 1/00 - CalendersSmoothing apparatus

Abstract

The present invention relates to an arrangement (1) for measuring the temperature of a web. The arrangement (1) comprises a plurality of sensors (3) for contactless measuring of the temperature, an elongated housing (5) intended for extending essentially along a transverse direction (T) which is transverse to the direction of movement of a web. The sensors (3) are arranged in a chamber (6) within the housing (5) and spread along the front side (7a) of the housing (5). Each sensor (3) is connected to a data bus (9) for providing information of the measured temperature to other systems and/or apparatuses. The sensors (3) are attached to a support structure (19) having at least one rotatable shaft (23) in the interior of the housing (7), and wherein the shaft (23) is arranged to rotate the support structure (19) such that the sensors (3) are displaced to a calibration and/or protection position away from the openings (11) for calibration and/or protection of the sensors (3).The invention also relates to a method for measuring the temperature of a web, a computer program, a computer readable medium and a control unit.

IPC Classes  ?

• G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
• G01K 13/06 - Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in linear movement
• G01K 15/00 - Testing or calibrating of thermometers
• G01N 25/20 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
• G05D 23/27 - Control of temperature characterised by the use of electric means with sensing element responsive to radiation
• D21F 5/06 - Regulating temperature
• D21F 7/00 - Other details of machines for making continuous webs of paper