Bimetal Thermometer Is Better with Oil Or without Oil

Is the bimetal thermometer better with oil or without oil? Answer: Bimetal thermometers are good with or without oil. They each have their own characteristics.

In order to meet the needs of actual production, the bimetal thermometer is divided into ordinary structure and oil-filled structure. Both of these two bimetallic thermometers can directly measure the temperature of liquid, steam and gaseous media in the range of -80℃～+500℃ in various production processes.

The bimetal thermometer is oil-free (ie, common structure), which is a commonly used bimetal thermometer. A bimetallic thermometer combines two metals with different linear expansion coefficients, and one end is fixed. When the temperature changes, the two metals have different thermal expansions and drive the pointer to deflect to indicate the temperature. This is a bimetallic thermometer. The bimetallic thermometer uses a hot bimetallic piece wound in a threaded shape as a temperature sensing device, and it is installed in a protective sleeve. One end is fixed, called the fixed end, and the other end is connected to a thin shaft, called Free end. There is a pointer on the free end spool. When the temperature changes, the free end of the temperature sensing device rotates accordingly, driving the pointer on the thin shaft to produce an angle change, and the corresponding temperature is indicated on the dial.

Bimetal thermometers with oil (that is, oil-filled structure) are called shock-resistant bimetal thermometers. The shock-resistant bimetal thermometer is filled with shock-resistant silicone oil or glycerin in the case to reduce the impact of environmental vibration. The shock-resistant bimetallic thermometer can directly measure the temperature of liquid, steam and gas medium in the range of -80℃～+500℃ in various production processes and the harsh and vibrating temperature of the environment. The thermometer has the characteristics of waterproof, anti-corrosion, vibration resistance, intuitive, easy to read, harmless, durable, etc. from the design principle and structure. It is widely used in petroleum, chemical, machinery, shipbuilding, power generation, textile, printing and dyeing, etc. Industry and scientific research sector. The shock-resistant bimetal thermometer is based on a bimetallic sheet wound into a circular bending shape. When one end is heated and expanded, it drives the pointer to rotate, and the working instrument displays the corresponding temperature value, and prevents environmental vibration. Fill the bimetal thermometer with silicone oil or glycerin to separate the bimetal thermometer display part from the measurement part to achieve the effect of shock resistance.