Kata thermometer is a type of thermometer that can measure the quality of environmental conditions, such as temperature, humidity, wind speed, and other human sensations. It is more like an discomfort index meter. What makes the human body feel cool seems to be related to the speed at which the wind carries away body heat, but understanding how these factors interact is a difficult question, and you can get an idea through measurement. The Kata thermometer is used for this purpose. 　

Structure according toJISStandard determination, total length approximately220Millimeters, with a ball diameter of approximately17Millimeters, approximately in length40Millimeters, using ethanol as a thermosensitive liquid. There are ordinary ones（N）And high temperature（H）Two types. Ordinary type in38℃ and35There is a scale line at ℃, and the high-temperature type is marked at55℃ and52There is a scale line at ℃. The Kata coefficient is written on the back, which means that every1cm2The heat carried away from the surface of a sphere, measured in milligrams and calories.JISThe standard specifies the calculation method. Usually, heat the light bulb until44Around ℃, exposed to air, measure temperature from38℃ drops to35The time required for the temperature to reach ℃, then divide the coefficient written on the Kata thermometer by that time (referred to as Kata)value).To assess the quality of environmental conditions.

purpose

Used to measure the working environment and wind speed in buildings, factories, mines, and other places.

How to choose

There is a regular type available（N）And high temperature type（H）Two types. The temperature at the measurement location is lower than30At ℃, use the regular type, and at higher temperatures, use the high-temperature type. There are also dry thermometers and wet thermometers (with gauze attached to the bulb). When measuring the rate of body heat release, use a dry thermometer when the body is sweating or wearing underwear. Wet thermometers are used to measure the body's heat release rate. Release heat under humid conditions. Usually, a Gancata thermometer is used for measurement.

how to handle

Kata thermometer is a special thermometer, so please refer to itJIS-B-7351Perform the operation.