| 摘要 |
PROBLEM TO BE SOLVED: To highly accurately detect a scale adhesion condition inside a system without managing a flow rate or water temperature of a liquid to be tested in an industrial water system such as a cooling water system.SOLUTION: A scale detection device 30 according to the present invention comprises: a first sensor 50 including a first liquid contact part 51 to be in contact with cooling water, a first heater 52 for heating the first liquid contact part 51, and a first temperature-measuring resistor 53 for measuring the temperature of the first liquid contact part 51; a second sensor 60 including a second liquid contact part 61 to be in contact with the cooling water, a second heater 62 for heating the second liquid contact part 61, and a second temperature-measuring resistor 63 for measuring the temperature of the second liquid contact part 61; and a controller 36 for supplying fixed power to the first heater 52 at all times, supplying the power of the same magnitude as the power supplied to the first heater 52 to the second heater 62 only for a prescribed time, and determining the scale adhesion condition of the first liquid contact part 51 from a temperature difference between the first liquid contact part 51 and the second liquid contact part 61 while the power is supplied to the second heater 62. |
