The exoergic resistant type hydrometry device

摘要

The heat generation resistant type hydrometry device the secondary passage which is arranged in the main aisle (4) has (3), the secondary the heat generation resistor (1) and the temperature sense resistor (2) is arranged in passage (3). The secondary as for passage (3), the high-level side opening surface becomes abbreviation perpendicular in forward direction of the fluid flow and as for the downstream side opening surface the 1st secondary passage and the high-level side opening surface which become abbreviation and parallel in opposite direction of the fluid flow being abbreviation and parallel in forward direction of the fluid flow, the downstream side opening surface has with the 2nd secondary passage which becomes abbreviation perpendicular for opposite direction of the fluid flow. The heat generation resistor (1) is arranged inside the 1st secondary passage, the temperature sense resistor (2) is arranged inside the 2nd secondary passage. The heat generation resistor (1) is heated in order the 100C - the 300C to become high vis-a-vis the temperature Ta of the fluid. The temperature sense resistor (2) 1/10 - 1/2 of heating temperature of heat generation resistor 1 is heated vis-a-vis fluid temperature Ta. When the fluid flows to forward direction, you can obtain the output value which responds to the flow of the fluid with the heat generation resistor (1), when the fluid flowed to opposite direction, the temperature sense resistor (2) is cooled from at the time of the fair current, is let flow in the heat generation resistor (1) decreases also the electric current which.