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Suction Pyrometers


Suction pyrometers are used for accurate temperature measurements in high temperature flue gases such as fire rooms. The principle is both to reduce the heat transfer by radiation and to increase the heat transfer by convection to the temperature sensor. The suction tube must have a length that allows for traversements in the measurement plane. The flow of cold water must be high enough to prevent boiling in the suction tube of the pyrometer. A suction device must have capacity enough to create a gas velocity of up to 100 m/s around the temperature sensor.

  •  Nozzle part is easily removed for rinsing, inspection or exchange

  • Nozzle part made of high temperature alloy or ceramics

  • Water cooled suction tube made of stainless steel

  • Standard suction tube lengths 2 – 2,5 – 3 – 3,5 – 4 – 4,5 meter

  • Extendable suction pyrometers can be delivered, i.e. 1,5 + 1,5 + 1,5 = 4,5 m

  • Suction tube diameter is 35 mm. 43 mm for extendable type

  • An air pressure ejector is used in the suction device that also includes a orifice for sample flow measurement

  •  A protective condensate separation and filter unit is placed upstream of the suction device

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