. A new thermo-electric fluid-meter and hot-wire anemometer. ELECTRO-DYIJAMOFiETER USED FOR DIRECT MEASUREl/IENT APPARATUS FOR GAIIBRATING FLUID-METER AT VARIOUSTEIvIPERATURES. £81 caloulated from the readings obtained by thePitot tube in a similar traverse but at a differentpoint in the line. The values obtained for thebalancing current required at velocities of 350, 450and 650 feet per minute are shown in the upper partof curve B. Oiving to the fact that a heating-currentin excess of three amperes v;as allowed to pass throughthe heated wires when there was no air blowing past th
. A new thermo-electric fluid-meter and hot-wire anemometer. ELECTRO-DYIJAMOFiETER USED FOR DIRECT MEASUREl/IENT APPARATUS FOR GAIIBRATING FLUID-METER AT VARIOUSTEIvIPERATURES. £81 caloulated from the readings obtained by thePitot tube in a similar traverse but at a differentpoint in the line. The values obtained for thebalancing current required at velocities of 350, 450and 650 feet per minute are shown in the upper partof curve B. Oiving to the fact that a heating-currentin excess of three amperes v;as allowed to pass throughthe heated wires when there was no air blowing past thewires, it was concluded that a change in resistance tookplace due to the melting of some of the solder about oneor more of tne junctions. It was then realized that it v;ould be necessaryto re-calibrate the instrument on the calibrating arm, inorder to see whether or not the instrument would functionproperly. The instrument was then remounted on thecalibrating arm and, as indicated in the lower section ofcurve B, a new series of points v;ere obtained. The current ana velocity values obtained in thePitot tube test were
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Keywords: ., bookcentury1900, bookdecade1920, bookidnewthermoele, bookyear1920
