1. Elohopealämpömittari: Elohopealämpömittari on perinteinen lasista valmistettu lämpömittari, jossa on elohopeapylväs, joka nousee jatkuvasti kehon lämpötilan mukana. Elohopealämpömittarilla on tarkat mittaustulokset, korkea vakaus ja alhainen hinta. Elohopea varastoidaan lopussa olevaan elohopeapalloon. Kun elohopea kuumennetaan, se laajenee ja nousee ylös hyvin kapeaa lasiputkea pitkin. Siksi pieni muutos kehon lämpötilassa voi johtaa suureen elohopean nousuun lasiputkessa. Lämpötilan mittaamisen jälkeen ravista lämpömittaria voimakkaasti, jotta elohopea palautuu elohopeapalloon.
2. Electronic thermometer: The electronic thermometer uses the definite relationship between the physical parameters of certain substances, such as resistance, voltage, current, etc., and the ambient temperature to display the body temperature in the form of numbers. The electronic thermometer has the advantages of convenient reading, short measurement time, no mercury, and harmless to the human body and the surrounding environment. The disadvantage is that the accuracy of indication is affected by factors such as electronic components and battery power supply conditions, which is not as good as that of glass thermometers.
3. Infrared thermometer: Infrared thermometer measures body temperature through infrared rays. Compared with electronic thermometers, the measurement speed is faster and the time is shorter. It can be divided into two types: contact type and non-contact type. Common contact infrared thermometers include ear thermometers, forehead thermometers, and multi-function thermometers, which can measure accurate body temperature from the ear in just one second. The most common non-contact infrared thermometer is the forehead thermometer, which can measure the temperature of the human body from a distance.
