. A new thermo-electric fluid-meter and hot-wire anemometer. t meter is now used chiefly forlarge gas-works service, and its operation issomewhat like that of a rotary engine? The averageerror is usually from 3 per Gentslow to 2 per centfast, The obtainable accuracy with large wet metersis within ,1 per cent. The Thomas electric gas meter consists, asindicated in figure V , of an electric resistanceheater coil placed in the gas main, a wattmeter, andtwo screen-resistance thermometers. A definite amountof current is passed through the heater such that thedifference of temperature of the gas bex
. A new thermo-electric fluid-meter and hot-wire anemometer. t meter is now used chiefly forlarge gas-works service, and its operation issomewhat like that of a rotary engine? The averageerror is usually from 3 per Gentslow to 2 per centfast, The obtainable accuracy with large wet metersis within ,1 per cent. The Thomas electric gas meter consists, asindicated in figure V , of an electric resistanceheater coil placed in the gas main, a wattmeter, andtwo screen-resistance thermometers. A definite amountof current is passed through the heater such that thedifference of temperature of the gas bexore and afterpassing the heater is a definite amount as measured bythe screen thermometers, which automatically averagethe temperature. The relation between the temperature, wattsinput, and flow is then computed from the expression W = ,,,05686 E 11,3^ g^3 p^^ ^.^^Sp where t = temperature difference in degrees Fahren-heit at inlet and outlet; Sp s specific heat of air or gas at constant PLATE A/oJ. /iA/£MoM£r£f< r/i£: r//oM/is £i£cr/i/c M£r£^.. F/0(y/i£ 7 /i£oc/^ro/i 6/it. K/f/VO/Vi r£/inewthermoelectri00seyf
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, bookidnewthermoele, bookyear1920
