| 摘要 |
PURPOSE:To make it possible to measure the quantity of the hot water whose temperature is higher than a reference temperature, by arranging temperature sensors generating outputs at a specified temperature or higher in the vertical direction in a hot water tank at a specified interval, and connecting the outputs of the temperature sensors to input terminal of an amplifier in parallel. CONSTITUTION:Temperature sensing diodes 11, 21...n1 for the hot water are arranged in the vertical direction in the tank at a specified interval. A bridge is constituted by the diodes 11, 21...n1 and resistors 12, 13, and 15. The outut of the bridges is amplified by an amplifier 17, and a measuring circuits 10, 20...n are constituted. The outputs of the measuring circuits 10, 20...n through a resistor 19 are inputted to an amplifier 46 in an output circuit 40, and the output thereof swings a pointer of a meter 47 via a resister 45. The temperature of the hot water to be sensed is determined by the values of the resistors 13 and 15 in the bridge for the measuring circuit. If the temperature of the hot water at the position where the diode is attached is lower than a certain temperture, it is not indicated by the meter. Every time the temperature of the hot water at each positon exceeds a specified value, it is indicated by the meter stepwise. |
