The difference between PT100 armored platinum resistance and armored thermoelectric resistance

The PT100 armored platinum resistor is a temperature sensor that has a smaller diameter, is more flexible, and has better seismic resistance than prefabricated thermal resistors. It is suitable for installation in situations where prefabricated thermal resistors cannot be installed. The WZPK series armored platinum resistors use imported thermal resistor temperature measuring elements, which have the advantages of precision, sensitivity, fast thermal response time, stable quality, and long service life.
The outer protective sleeve of PT100 armored platinum resistor is made of stainless steel and filled with high-density oxide insulation material. Therefore, the armored thermistor has strong anti pollution performance and mechanical strength, making it suitable for installation in harsh environments.
The PT100 armored platinum resistor is usually composed of armored platinum thermistor temperature sensing elements, installation and fixing devices, and wiring devices, which have less thermal response time and reduce dynamic errors; Small diameter, unlimited length; High measurement accuracy; Imported thin film resistor components with reliable and stable performance; Room temperature insulation resistance; The thermal resistance is tested at an ambient temperature of 15-35 ° C, relative humidity not exceeding 80%, and a test voltage of 10-100V (DC). The insulation resistance between the electrode and the outer sleeve is greater than 100m Ω.
Although armored thermal resistors are widely used in industry, their application is limited due to their temperature measurement range. The temperature measurement principle of thermal resistors is based on the characteristic that the resistance value of conductors or semiconductors changes with temperature. It also has many advantages, such as remote transmission of electrical signals, high sensitivity, strong stability, good interchangeability and accuracy. However, it requires power excitation and cannot measure temperature changes instantaneously. Industrial thermistors generally use Pt100, Pt10,Cu50,Cu100, The temperature measurement range of platinum resistance thermometers is generally -200-800 ℃, while that of copper resistance thermometers is -40 to 140 ℃. Thermistors and thermocouples have the same type of differentiation, but they do not require compensating wires and are cheaper than thermocouples.
Armored thermistor is a solid body composed of temperature sensing elements (resistors), leads, insulation materials, and stainless steel sleeves. Its outer diameter is generally between 2 and 8mm, with a minimum of 0.25mm. Compared with ordinary thermistors, it has the following advantages:
① Small size, no air gap inside, thermal inertia, small measured value;
② Good mechanical performance, vibration resistance, and impact resistance;
③ Can bend, easy to install;
④ Long service life.
Armored thermistor is a commonly used temperature measuring element in temperature measuring instruments. It is composed of two conductors with different compositions connected at both ends to form a circuit. When the temperature of the thermocouple at the two junction points is different, a thermal current will be generated in the circuit. If there is a temperature difference between the working end and the reference end of the thermocouple, the display instrument will indicate the temperature value corresponding to the thermoelectric potential generated by the thermocouple.
Armored thermocouple is a type of temperature sensor that has a smaller diameter, is more flexible, and has better seismic resistance compared to prefabricated thermocouples. It is suitable for installation in situations where prefabricated thermocouples cannot be installed. The company's armored thermocouples use imported thermistor temperature measuring elements, which have the advantages of precision, sensitivity, fast thermal response time, stable quality, and long service life.