Contact thermometer

Contact thermometer: Mercury thermostat for heating devices

A contact thermometer is a mercury thermostat that is used to control the temperature in various thermal devices, including thermostats. It works on the principle of closing the contacts of the electrical circuit when the set temperature is reached, which leads to the heating system being turned off.

The main element of a contact thermometer is a mercury thermometer, which consists of a thermometric element and electrical contacts. The thermometric element is a thin glass tubular device filled with mercury. As temperature changes, the mercury in the thermometer element expands or contracts, causing the position of the mercury column in the tube to change.

Connecting contacts to a contact thermometer allows you to use it as a thermostat. The contacts are connected to an electrical circuit that controls the heating system. When the mercury column reaches the set temperature, it closes the contacts, which turns off the heating system.

Contact thermometers are used in a wide range of thermal apparatus, including home and industrial thermostats, heating and air conditioning systems, and other applications requiring precise temperature control.

One of the advantages of contact thermometers is their accuracy and reliability. They provide stable and precise temperature control to prevent the system from overheating or freezing. In addition, they have a long service life and can be used in a wide temperature range.

In conclusion, a contact thermometer is an important element of heating devices that provides accurate temperature control and prevents the system from overheating or freezing. Due to their accuracy and reliability, they are widely used in various industrial and domestic applications.

Contact thermometers are a special type of mercury thermometers that are widely used in heating systems where control of the coolant temperature is required. They consist of two parts - a housing with a mercury indicator and an electrical unit with contacts connected to the heating system.

The operating principle of a contact thermometer is based on the closure of an electrical circuit when a column of mercury appears in the glass indicator tube. When the set temperature is reached, the electrical circuit contacts close and the heating system turns off. Thus, the contact thermometer serves as a kind of regulator of the set temperature.

In most cases, contact thermometers are used in models of household thermostats, such as room thermostats, that maintain a set temperature in the room. Thermostats have built-in temperature sensors, electrical contacts contact the heating system, and the heating system turns on or off depending on the desired air temperature in the room or area in the house. This technology allows you to maintain a balance between costs and comfort - warm in winter and cool in summer.

It is important to note that the contact thermometer requires special care when handling. To avoid damage to the glass tube or possible leakage of mercury, when using the device, you must follow the safety precautions specified by the manufacturer. It is also worth considering that if the device is installed incorrectly, there may be a risk of mercury poisoning and its impact on the environment. Therefore, you should carefully monitor the cleanliness and absence of damage to the thermometer and its electrical parts.

Contact thermometers are one of the most popular methods of temperature control in heating and cooling systems. They provide comfort and safety in use, allowing you to control the temperature