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Calibration Flow Sensors

Every SCHMIDT® flow sensor is individually adjusted in a wind tunnel and this assures that each sensor's accuracy is within the specified tolerances. After being finished, every sensor may be verified on customers demand in a calibration wind tunnel and the results are recorded in a calibration certificate. Thus the customer gets a proof of the accuracy of his sensor which allows him to use this sensor in applications, which are under supervision of a quality monitoring system e.g. according to DIN EN ISO 9001:2008 or GMP.

Two modern and high precision wind tunnels are at customers disposal where SCHMIDT® flow sensor can be calibrated in a fully automated process. Both wind tunnels dispose of reference elements which are traceable back to national standards. Our wind tunnels and their reference elements are regularly monitored under supervision of the SCHMIDT Technology quality monitoring system according DIN EN ISO 9001:2008.

Atmospheric wind tunnel
Minimised turbulences and a very precise flow profile are the attributes of this atmospheric wind tunnel. Its velocity ranges from 0.1 m/s (0.33 ft/s) to 70 m/s
(230 ft/s) and this is good for all atmospheric sensors manufactured by SCHMIDT Technology. This wind tunnel also reproduces very low flow velocities with high accuracy as it is necessary for flow sensors used in cleanroom applications.

Pressure wind tunnel
This wind tunnel is the first one of this type in Europe. This wind tunnel is capable of creating normal flow velocities up to 200 m/s (656 ft/s) and sensors can be adjusted and calibrated under conditions of over pressure. Its outstanding flow quality allows to adjust the SCHMIDT® high speed sensors at minimum tolerances.

Technical details of the two wind tunnels can be found in the enclosed presentation "Expertise in flow - the wind tunnels" .

Factory or DAkkS calibration certificates
On customers demand SCHMIDT Technology will supply each SCHMIDT® flow sensor with a factory calibration certificate. Alternatively for a lot of sensors we can also supply a DAkkS calibration certificate. Please ask for more details.

Calibration and Expertise
Already the selection of the best suited wind tunnel shows the expertise of a sensor manufacturer. All wind tunnels have been planned in detail and have been tailored exactly to the planned application. Every SCHMIDT® flow sensor passes an intensive test programme in our wind tunnel before he is found to be good enough to be released for customers application. Background of this evaluation programm is a drastic Knowledge of our house about fluid mechanics of gases and of the physical operating mode of the SCHMIDT® flow sensors. You will benefit from this expertise.

Atmospheric wind tunnel
Atmospheric wind tunnel

Pressure wind tunnel
Pressure wind tunnel

 
   
Calibration-
Certificate SS 20.400
 
Calibration-
Certificate SS 20.500
 
Calibration-
Certificate SS 20.060
 
   
 
 
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