| 19 |
| Installation precautions for bimetal thermometers in a wide range of applications |
Bimetal thermometers are often used in various industrial equipment. Due to their characteristics, we regularly need to remove the bimetal thermometer to stop the verification. So what are the main requirements for reinstalling the bimetal thermometer after the verification is completed? We have summarized it based on the following issues: the installation of bimetal thermometers, pay attention not to screw the meter head. Check whether the thermometer works normally. The head of the thermometer should be vertical, and the pointer shaft should be located in the center of the dial hole. When tapping ...
| 12 |
| Introduce the application of thermal resistance temperature instrument in the instrument |
A thermocouple is a temperature-sensing element and a primary meter. It directly measures the temperature, and converts the temperature signal into a thermo-electromotive force signal, which is converted into the temperature of the measured medium through an electrical instrument (secondary instrument). The basic principle of thermocouple temperature measurement is a closed loop composed of two different material material conductors. When there is a temperature gradient at both ends, a current will flow through the loop. At this time, there is an electromotive force between the two ends, the thermoelectromotive force, which is the so-called Seebeck effect. Connect the first ...
| 13 |
| Learn about the classification and principle of thermometers together |
Depending on the purpose of the application, a variety of thermometers have been designed and manufactured. The basis of its design are: the application of solid, liquid, gas thermal expansion and contraction under the influence of temperature; under constant volume conditions, the pressure of gas (or vapor) changes due to the difference in temperature; the role of thermoelectric effect; resistance with Changes in temperature; effects of heat radiation, etc. Gas thermometer: Hydrogen or helium is often used as a temperature measurement substance. Due to the low liquefaction temperature of hydrogen and helium, it is close to absolute zero ...
| 07 |
| Professional analysis of the classification and performance characteristics of temperature measurement and control instruments |
Temperature measurement and control instruments can be divided into three categories from the working principle: pointer, digital, and intelligent. The pointer meter is mainly a traditional moving coil meter. Its characteristics are simple structure and low price. This makes it still used in industry, but its measurement accuracy is low, usually 1 to 2.5, and the reading error is large. Transmitting output is therefore increasingly being replaced by digital instruments. Digital instruments, such as the digital display meters that are widely used today, have a greater accuracy than the moving coil ...
| 31 |
| Analysis on the characteristics and structural principle of bimetal thermometer |
The advantages of bimetal thermometers are fast response speed, small size, good linearity, and stability. Some foreign products also have high-temperature performance. The thermoelectric potential of a bimetal thermometer is only related to the thermoelectric properties of the material of the thermal electrode and the temperature difference between the two ends. Using the same homogeneous conductor or semiconductor to form the circuit will not generate thermoelectric potential. The temperature T, T0 of the two junctions of the thermocouple, if T = T0, the thermoelectric potential of the thermocouple is zero. The law of intermediate temperature laid the foundation for the development of thermocouple indexing tables ...
| twenty three |
| Talk about the adaptation range and working principle of temperature controller |
Temperature controller is an integrated intelligent temperature control instrument, which adopts a fully digital integrated design, with programmable temperature curve or fixed-point constant temperature control, multiple PID adjustment, output power limit curve programming, manual / automatic switching, soft start , Alarm switch output, real-time data query, communication with the computer and other functions, the digital display temperature instrument and ZK thyristor voltage regulator into one. Integrating temperature measurement, regulation and drive, the instrument directly outputs the thyristor trigger signal ...
| 06 |
| Review of Shanghai International Heating Exhibition 2019 |
HEATEC "Shanghai International Heating Technology Exhibition" and its BOILERSHANGHAI "Shanghai International Boiler Show", BIOTEC "Shanghai International Biomass Energy Exhibition" and THERMMOTEC "Shanghai International Thermal Equipment Exhibition" have become the largest and most influential in Asia. The environmental protection heating and thermal energy technology exhibition that meets the needs of industrial and commercial users. Thank you all for your guidance. ...