Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question dated 2020-09-06
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-09-06: Discussion question: 227. What is a armored thermoresistor? What are its advantages?
An armored thermistor is a type of temperature sensor that measures temperature by taking advantage of the fact that a substance’s resistance changes as its temperature changes. When the resistance value changes, the measuring instrument displays the temperature value corresponding to that resistance value. It has a smaller diameter than prefabricated platinum resistors, is easy to bend, and is suitable for installation in spaces with narrow pipes as well as in situations that require rapid response and miniaturization. It can automatically detect gases, liquid media, and solid surfaces within a temperature range of -200 to 600°C. It can be connected directly to copper wires and secondary instruments; thanks to its excellent electrical output characteristics, it provides accurate input values for display devices, recorders, regulators, scanners, data loggers, and computers. Armored thermoresistors offer advantages such as precision, sensitivity, fast thermal response time, stable quality, and a long service life. In addition, they possess strong resistance to contamination and mechanical strength, making them suitable for installation in harsh environments.
An armored thermistor is a type of temperature sensor that measures temperature by taking advantage of the fact that a substance’s resistance changes as its temperature changes. When the resistance value changes, the measuring instrument displays the temperature value corresponding to that resistance value. It has a smaller diameter than prefabricated platinum resistors, is easy to bend, and is suitable for installation in spaces with narrow pipes as well as in situations that require rapid response and miniaturization. It can automatically detect gases, liquid media, and solid surfaces within a temperature range of -200 to 600°C. It can be connected directly to copper wires and secondary instruments; thanks to its excellent electrical output characteristics, it provides accurate input values for display devices, recorders, regulators, scanners, data loggers, and computers. Armored thermoresistors offer advantages such as precision, sensitivity, fast thermal response time, stable quality, and a long service life. In addition, they possess strong resistance to contamination and mechanical strength, making them suitable for installation in harsh environments
An armored thermistor is a type of temperature sensor that measures temperature by taking advantage of the fact that a substance’s resistance changes as its temperature changes. When the resistance value changes, the measuring instrument displays the temperature value corresponding to that resistance value. It has a smaller diameter than prefabricated platinum resistors, is easy to bend, and is suitable for installation in spaces with narrow pipes as well as in situations that require rapid response and miniaturization. It can automatically detect gases, liquid media, and solid surfaces within a temperature range of -200 to 600°C. It can be connected directly to copper wires and secondary instruments; thanks to its excellent electrical output characteristics, it provides accurate input values for display devices, recorders, regulators, scanners, data loggers, and computers. Armored thermoresistors offer advantages such as precision, sensitivity, fast thermal response time, stable quality, and a long service life. In addition, they possess strong resistance to contamination and mechanical strength, making them suitable for installation in harsh environments
An armored thermoresistor is made by combining a metal protective sleeve, insulating material, and a resistance element together and drawing them together; it is also known as a sleeved thermoresistor. Armored thermoresistors are characterized by rapid response, flexibility, resistance to vibration and shock, and a long service life.
Armored thermoresistor: It is a solid structure composed of a temperature-sensing element (resistive body), leads, insulating material, and a stainless steel sleeve. Its outer diameter is generally between φ2 and φ8 mm, with a minimum of φ mm. Compared to ordinary thermoresistors, it has the following advantages: ① Small size, no air gaps inside, resulting in low thermal inertia and minimal measurement lag ； ②Good mechanical properties, vibration resistance, and impact resistance ； ③It can bend, making installation easier. ④ It has a long service life.
An armored thermoresistor is manufactured by combining a metal protective sleeve, insulating material, and a resistance element. The advantages are: it can bend freely and has strong seismic resistance
An armored thermistor is a type of temperature sensor that utilizes the property that a material’s resistance changes as its temperature changes, in order to measure temperature by displaying the temperature value corresponding to the resistance value. It has a small diameter and is easy to bend, making it suitable for installation in narrow pipes as well as in situations that require rapid response and miniaturization. It can automatically detect gases, liquid media, and solid surfaces within a temperature range of -200~600°C ； It can be directly connected to secondary instruments using copper wires. It has advantages such as precision, sensitivity, fast thermal response time, stable quality, and long service life. It has excellent resistance to pollution and mechanical strength, making it suitable for installation in harsh environments.
The sheath in an armored thermocouple refers to the insulating material and metal protective sleeve that wrap around the thermocouple wire like armor. The function of the enclosure is to protect the thermocouple wire by providing an additional protective layer around it, such as a stainless steel tube or mesh, to prevent corrosion in acidic, alkaline, and other hostile environments. Sheathed thermocouples offer advantages such as flexibility, resistance to high pressures, fast thermal response time, and durability. Like assembled thermocouples, they are used as sensors for measuring temperature. Typically, sheathed thermocouples are used in conjunction with display instruments, recorders, and electronic regulators. Additionally, they can also serve as the temperature-sensing element in assembled thermocouples. Sheathed thermocouples can directly measure the temperature of liquid, steam, and gas media, as well as solid surfaces, within the range of 0°C to 1100°C in various production processes.
Armored thermoresistor: It is a solid component composed of a temperature-sensing element (resistive body), leads, insulating material, and a stainless steel sleeve. Its outer diameter is generally between φ2 and φ8 mm, with a minimum of φ0.25 mm. Compared to ordinary thermoresistors, it has the following advantages: ① Small size, no air gaps inside, resulting in low thermal inertia and minimal measurement lag ； ②Good mechanical properties, vibration resistance, and impact resistance ； ③It can bend, making installation easier. ④ It has a long service life.
An armored thermistor is a type of temperature sensor that measures temperature by taking advantage of the fact that a substance’s resistance changes as its temperature changes. When the resistance value changes, the measuring instrument displays the temperature value corresponding to that resistance value. It has a smaller diameter than prefabricated platinum resistors, is easy to bend, and is suitable for installation in spaces with narrow pipes as well as in situations that require rapid response and miniaturization. It can automatically detect gases, liquid media, and solid surfaces within a temperature range of -200 to 600°C. It can be connected directly to copper wires and secondary instruments; thanks to its excellent electrical output characteristics, it provides accurate input values for display devices, recorders, regulators, scanners, data loggers, and computers. Armored thermoresistors offer advantages such as precision, sensitivity, fast thermal response time, stable quality, and a long service life. In addition, they possess strong resistance to contamination and mechanical strength, making them suitable for installation in harsh environments.