Gauges are devices that can measure temperatures in mechanical installations according to environmental conditions and standards. Other types of goggles are used for various uses, such as mechanical strain measurements. Due to the temperature range and application, various methods are used to measure it.
These methods can be categorized as contact and non-contact. The contact method in fact uses a sensor that can be a thermocouple. This method of measurement is performed in more analog models using a bimetal or gas-filled method, made of a bubble and a tube of voids, which is known as a thermometer or thermometer.
Non-contact measurement methods are used based on the amount of infrared radiation that the target object emits to the environment. These thermometers are known as meters or gunmeters or lysoscopes.
The puzzles are available in various types of oily and vacuum, dial and digital, differential and negative, diaphragm, and so on. The measuring range and position of the sensor in the configurator are the factors that determine the model and its type.
Liquid filled thermometer with indicator of pressure system:
This kind of thermometer works by using the fluid pressure change caused by the temperature change, that is, changing the temperature of the heat sensor will change the pressure of the filled liquid, and thus the temperature is displayed. Fill liquid can be alcohol, oil and so on.
Thermometer with indication of steam pressure system:
This type of thermometer contains an escape fluid inside the heat sensor, and the change in temperature of the thermal sensor changes the saturated vapor pressure of the filled liquid, and thus the temperature is displayed.
Thermocouples or temperature gauges are special point-temperature analogue displays that are divided in function into two categories:
The basis of this thermometer is to reduce or increase the length of a metal due to temperature variations.
ACTUATED filled thermometers:
This type of thermometer works by changing the mercury pressure caused by the temperature change, that is, changing the temperature of the heat sensor changes the pressure of the mercury filled, and the temperature is then calibrated by a pressure gauge calibrated on the basis of the temperature. It will be given.
Thermometer with indication of gas pressure system:
In this type of thermometer, the change in temperature of the heat sensor changes the pressure of the filled gas and thus the temperature is shown. The gas to be filled should be a lethal gas such as nitrogen or helium.
The most commonly used thermometers are those where the water temperature is more than 1 meter away from the display.