The thermal flow sensors SS 20.600 from Schmidt Technology use the measurement principle of heat convection to determine flow velocity or volume flow. The flow element is securely and efficiently positioned in a chamber head. The flow sensor is heated to 40 K above the medium temperature measured by the sensor. Cooling of the heated element caused by medium flow – or rather the energy required to conserve the element temperature – determines the flow velocity. The higher the flow velocity, the higher the power required for heating the element.
D esigned for demanding operating conditions the SS 20.600 sensors are available as compact sensors with probe tube and housing in a single unit or with separate electronics connected via cable for installation in confined areas. Both variants are suitable for installation in small tubes starting at DN 25, and with sensor lengths from 120 to 1000 mm they are even suited for large ducts. The special chamber head can detect flow velocities from 0.2 to 220 m/s. Each sensor will be calibrated individually in a pressure wind tunnel.
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