G - Physics – 01 – K
Patent
G - Physics
01
K
73/61
G01K 1/20 (2006.01) G01K 7/02 (2006.01) G01W 1/08 (2006.01)
Patent
CA 2036512
Method in improving of the precision of impe- dance detectors in radiosondes. In the method, the temperature of the detector or detectors (30 and/or 10) is measured by means of a thermo- couple (20), in which the joint (23) of one branch of its thermoelements (21,22) is placed in con- nection with, or at the proximity of, the de- tector to be measured. In the thermocouple (20) the joint (24) of the other branch is placed in the atmosphere (SA) surrounding the detector. By means of the thermocouple (20), the difference (T1-T0) between the temperature (T1) prevailing in connection with the detector and the tem- perature (T0) in the surrounding atmosphere (SA) is detected. The output signal (fout) of the meas- urement coupling of the radiosonde is affected by means of an electric signal (U(t)) representing the difference (T1-T0) in temperature, which out- put signal contains the data concerning the me- teorological quantity or quantities measured by means of the detector (30) or detectors (10,30). The DC voltage (Uo) obtained from the thermo- couple (20) is converted by means of an inverter (60) or equivalent into an AC voltage (U(t)), by means of which the output signal (fout) of the measurement coupling is affected.
Marks & Clerk
Vaisala Oy
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